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Insulation monitoring device for unearthed AC, AC/DC and DC systems (IT systems) up to 3(N)AC, AC 400 V, DC 400 V Suitable for the application of generators acc. tostandard DIN VDE 0100-551 Software version: D0494 V1.xx
ON
T R MENU
AL1 AL2k
< k
ISOMETER
isoGEN423
E KE A1 A2
14 24 11
T/R A B
L1/+ L2/-
ISOMETER® isoGEN423
isoGEN423_D00221_01_M_XXEN/06.2018
Bender GmbH & Co. KGPostbox 1161 • 35301 Grünberg • GermanyLondorfer Straße 65 • 35305 Grünberg • Germany
Tel.: +49 6401 807-0Fax: +49 6401 807-259
E-Mail: [email protected]: www.bender.de
© Bender GmbH & Co. KGAll rights reserved.
Reprinting only with permissionof the publisher.
Subject to change!
Customer serviceService hotline: 0700-BenderHelp (telephone and fax)Carl-Benz-Straße 8 • 35305 Grünberg • Germany
Tel.:+49 6401 807-760Fax:+49 6401 807-629
E-Mail: [email protected]
READ THIS MANUAL AND ALL ACCOMPANYING DOCUMENTS CAREFULLY AND RETAIN FOR FUTURE REFERENCE.
T
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rotection (on, OFF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
ings FAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
mbined test or reset button T/R . . . . . . . . . . . . . . . . . . . .11
ry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
ory HiS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
rotocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
ction and commissioning ............................12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
evice .................................................................15
s in use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
lue setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
n of the relay operating mode . . . . . . . . . . . . . . . . . . . . .17
assignment "r1" and "r2" and LED assignment . . . . . .17
ry configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
figuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
uration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
nfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
display and history memory . . . . . . . . . . . . . . . . . . . . . . .18
he BMS protocol ...........................................19
able of Contents
. Important information .................................................................... 5
1.1 How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Technical support: service and support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.1 First level support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.2 Repair service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.3 Field service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Training courses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Delivery conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Inspection, transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7 Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. Safety instructions ............................................................................ 7
2.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Work activities on electrical installations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
. Function ............................................................................................. 8
3.1 Device features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.1 GEn mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.2 dc mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.3 General measuring functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.4 Isolation from the system to be monitored . . . . . . . . . . . . . . . . . . . . . . 9
3.2.5 Monitoring the insulation resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.6 Undervoltage/overvoltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.7 Self test/error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.8 Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.9 Signalling assignment of the alarm relays K1/K2 . . . . . . . . . . . . . . . . 10
3.2.10 Measuring and response times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.11 Password p
3.2.12 Factory sett
3.2.13 External, co
3.2.14 Fault memo
3.2.15 History mem
3.2.16 Interface/p
4. Installation, conne
4.1 Installation . . . .
4.2 Wiring diagram
4.3 Commissioning
5. Operation of the d
5.1 Display element
5.2 Menu overview
5.3 "AL" menu . . . . .
5.3.1 Response va
5.4 Menu "out" . . . .
5.4.1 Configuratio
5.4.2 Relay alarm
5.4.3 Fault memo
5.4.4 Interface con
5.5 „t“ menu. . . . . . .
5.5.1 Time config
5.6 Menu "SEt" . . . .
5.6.1 Function co
5.7 Measuring value
6. Data access using t
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able of Contents
. Data access using the Modbus RTU protocol ............................ 20
7.1 Reading out the Modbus register from the ISOMETER®. . . . . . . . . . . . . . 20
7.1.1 Command of the master to the ISOMETER® . . . . . . . . . . . . . . . . . . . . . 20
7.1.2 Answer of the ISOMETER® to the master . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 Write Modbus register (parameter setting) . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2.1 Command of the master to the ISOMETER® . . . . . . . . . . . . . . . . . . . . . 20
7.2.2 ISOMETER® answer to the master . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3 Exception code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.3.1 Structure of the exception code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
. Modbus register assignment of the ISOMETER® ...................... 22
8.1 Device-specific data type of the ISOMETER® . . . . . . . . . . . . . . . . . . . . . . . . 24
8.1.1 Device name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.1.2 Measuring values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.1.2.1 Float = Floating point value of the channels . . . . . . . . . . . . . . 24
8.1.2.2 AT&T = Alarm type and test type (internal/external) . . . . . . . 24
8.1.2.3 R&U = Range and unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.1.3 Alarm assignment of the relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.2 Channel descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
. IsoData data string ......................................................................... 27
0. Technical data ............................................................................... 28
10.1 Tabular presentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
10.2 Standards, approvals and certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10.3 Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
INDEX .................................................................................................... 30
isoGEN423_D00221_01_M_XXEN/06.2018
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rt: service and supportbleshooting Bender offers you:
or e-mail for all Bender products
pecific customer applications
nd replacement service for Bender products
esting and analysing Bender products
update for Bender device
t devices in the event of faulty or incorrectly delivered
Bender devices, which includes an in-house repair service at no extra cost
6401 807-760* 6401 807-2590BenderHelp (Telefon und Fax)[email protected]
6401 807-780** (technical issues) 6401 807-784**, -785** (sales) 6401 [email protected]
5
This manual is intended for qualified personnel working in electrical engi-neering and electronics!
Important information. Important information
.1 How to use this manuallways keep this manual within easy reach for future reference.
o make it easier for you to understand and revisit certain sections in this manual, we ave used symbols to identify important instructions and information. The meaning of ese symbols is explained below:
DANGER
This signal word indicates that there is a high risk of danger, that will resultin death or serious injury if not avoided.
WARNING
This signal word indicates a medium risk of danger that can lead to deathor serious injury if not avoided.
CAUTION
This signal word indicates a low-level risk that can result in minor or mod-erate injury or damage to property if not avoided.
This symbol denotes information intended to assist the user in making op-timum use of the product.
1.2 Technical suppoFor commissioning and trou
1.2.1 First level supportTechnical support by phone
• Questions concerning s
• Commissioning
• Troubleshooting
1.2.2 Repair serviceRepair, calibration, update a
• Repairing, calibrating, t
• Hardware and software
• Delivery of replacemenBender devices
• Extended guarantee foror replacement devices
Telephone: +49Fax: +49In Germany only: 070E-mail: sup
Telephone: +49+49
Fax: +49E-mail: repa
Im
isoGEN423_D00221_01_M_XXEN/06.20186
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1BzuÄkdseElektronikindustrie e. V.) (German Electrical and Electronic Manufacturer's Association) aS
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abilitys in the event of injury to persons or damage to property are ibuted to one or more of the following causes:
ice.
missioning, operation and maintenance of the device.
structions in this operating manual regarding transport, ion and maintenance of the device.
to the device made by parties other than the manufacturer.
ical data.
rrectly and the use of replacement parts or accessories not acturer.
external influences and force majeure.
on with device combinations not recommended by the
cially the safety instructions, must be observed by all person-urthermore, the rules and regulations that apply for accident se must be observed.
ations and laws governing the disposal of this device. Ask sure how to dispose of the old equipment. trical and electronic equipment (WEEE directive) and the di-certain hazardous substances in electrical and electronic apply in the European Community. In Germany, these poli-gh the "Electrical and Electronic Equipment Act" (ElektroG). ing applies:
• Electrical and electronic equipment are not part of household waste.
s are not part of household waste and must be disposed regulations.
ic equipment from users other than private households he market after 13 August 2005 must be taken back by the d of properly.
isposal of Bender devices, refer to our homepage at e & support.
lso applies.ale and delivery conditions can be obtained from Bender in printed or electronic format.
.5 Inspection, transport and storagespect the dispatch and equipment packaging for damage, and compare the contents
f the package with the delivery documents. In the event of damage in transit, please ntact Bender immediately.
he devices must only be stored in areas where they are protected from dust, damp, and ray and dripping water, and in which the specified storage temperatures can be en-red.
• Batteries and accumulatorof in accordance with the
• Old electrical and electronwhich was introduced to tmanufacturer and dispose
For more information on the dwww.bender-de.com -> Servic
Important informationportant information
.2.3 Field servicen-site service for all Bender products
• Commissioning, parameter setting, maintenance, troubleshooting for products
• Analysis of the electrical installation in the building (power quality test, EMC test,thermography)
• Training courses for customers
vailable from 7.00 a.m. to 8.00 p.m. 365 days a year (CET/UTC+1)Mo-Thu 7.00 a.m. - 4.00 p.m., Fri 7.00 a.m. - 1.00 p.m.
.3 Training coursesender is happy to provide training regarding the use of test equipment. he dates of training courses and workshops can be found on the Internet at www.bend-r-de.com -> Know-how -> Seminars.
.4 Delivery conditionsender sale and delivery conditions apply. For software products the "Softwareklausel
r Überlassung von Standard-Software als Teil von Lieferungen, Ergänzung und nderung der Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen der Ele-troindustrie" (software clause in respect of the licensing of standard software as part of eliveries, modifications and changes to general delivery conditions for products and rvices in the electrical industry) set out by the ZVEI (Zentralverband Elektrotechnik- und
elephone: +49 6401 807-752**, -762** (technical issues)+49 6401 807-753** (sales)
ax: +49 6401 807-759-mail: [email protected]
nternet: www.bender-de.com
1.6 Warranty and liWarranty and liability claimexcluded if they can be attr
• Improper use of the dev
• Incorrect mounting, com
• Failure to observe the incommissioning, operat
• Unauthorised changes
• Non-observance of techn
• Repairs carried out incoapproved by the manuf
• Catastrophes caused by
• Mounting and installatimanufacturer.
This operating manual, espenel working on the device. Fprevention at the place of u
1.7 DisposalAbide by the national regulyour supplier if you are not The directive on waste elecrective on the restriction of equipment (RoHS directive)cies are implemented throuAccording to this, the follow
isoGEN423_D00221_01_M_XXEN/06.2018
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e insulation resistance RF of unearthed AC, AC/DC and DC sys-inal system voltages of 3(N)AC, AC/DC 0…400 V or
permissible system leakage capacitance Ce is 5 μF. DC com-ms do not influence the operating characteristics, when a
C 10 mA flows. A separate supply voltage Us allows de-ener-red, too.ments of applicable standards, customised parameter set-equipment in order to adapt it to local equipment and e heed the limits of the range of application indicated in the
cribed in this manual is regarded as improper.
d personnel are permitted to carry out the work necessary toission and run a device or system.
hat the ISOMETER® functions correctly, an internal resistance ust exist between L1/+ and L2/- via the source (e.g. the trans-the load.
t of an alarm message of the ISOMETER®, the insulation fault liminated as quickly as possible.
ETER® is installed inside a control cabinet, the insulation fault ust be audible and/or visible to attract attention.
7
If the ISOMmessage m
Safety instructions. Safety instructions
.1 General safety instructionsart of the device documentation in addition to this manual is the enclosed "Safety in-ructions for Bender products".
.2 Work activities on electrical installations
the device is used outside the Federal Republic of Germany, the applicable local stand-rds and regulations must be complied with. The European standard EN 50110 can be sed as a guide.
DANGER
Risk of fatal injury due to electric shock!Touching live parts of the system carries the risk of: l An electric shock l Damage to the electrical installation l Destruction of the deviceBefore installing and connecting the device, make sure that the ins-tallation has been de-energised. Observe the rules for working on elec-trical installations.
2.3 Intended use
The ISOMETER® monitors thtems (IT systems) with nomDC 0…400 V. The maximumponents existing in AC systeminimum load current of Dgised systems to be monitoIn order to meet the requiretings must be made on the operating conditions. Pleastechnical data. Any use other than that des.
Only qualifieinstall, comm
To ensure tof ≤1 kΩ mformer) or
In the evenshould be e
isoGEN423_D00221_01_M_XXEN/06.2018
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ng functions
e RMS value of the nominal system voltage Un between residual voltages UL1e (between L1/+ and earth) and UL2e
m , the ISOMETER® determines from a minimum value of the faulty conductor L1/+ or L2/-, which shows the distribution between conductors L1/+ and L2/-. The distribution is preceding the insulation resistance measurement. The value or is ±100 %:
e calculated from the total insulation resistance RF and the the following formula:
uctor L1/+ ->RL1F = (200 % * RF)/(100 % + R%)
uctor L2/- -> RL2F = (200 % * RF)/(100 % – R%)
pled to an AC system, the fault location can only be deter-stem and the faulty conductor is detected either on L1/+
alculating the fault distribution is not possible in this case.
etected fault or the faulty conductor to an alarm relay via the n violate the response values activated in the "AL" menu, this
s and relays "K1" and "K2" according to the alarm assignment ition, the operation of the relay (n.o./n.c.) can be set and the d.
F n violate their release value (response value plus hysteresis) for on, the alarm relays will switch back to their initial posi-L2" stop lighting. If the fault memory is activated, the dition and the LEDs light until the reset button "R" is
terrupted. The device function can be tested using the signed to the device via the LCD and the control buttons an be password-protected. Parameterisation is also pos- by using the BMS Ethernet gateway (COM465IP) or the
Meaningfault on conductor L2/-al faultfault on conductor L1/+
8
3.2.1 GEn modeThe GEn mode is used in AC/DC or also in DC systems. The device complies withthe maximum response time ≤ 1 s für Ce ≤ 1 μF and RF ≤ Ran/2.
3.2.2 dc modeThe dc mode is only used in DC systems. In this mode, the device complies with the max-imum response time of ≤ 1 s for Ce ≤ 2 μF and RF ≤ Ran/2 in the event of asymmetrical in-sulation faults. In case of symmetrical insulation faults, response times of ≤ 10 s for Ce ≤ 5 μF and RF ≤ Ran/2 are complied with. The system leakage capacitance Ce is also measured in this mode.
the period toff without interruptition and the alarm LEDs "AL1"/"Aalarm relays remain in alarm conpressed or the supply voltage is intest button "T". Parameters are ason the front panel; this function csible via the BMS bus, for exampleModbus RTU.
Function. Function
.1 Device features • Monitoring the insulation resistance RF for unearthed AC/DC systems
• Measurement of the nominal system voltage Un (True RMS) with undervoltage and overvoltage detection
• Measurement of residual voltages to earth (L1+/PE and L2-/PE)
• Two operating modes: GEn and dc
• Automatic adaptation to the system leakage capacitance Ce up to 5 μF
• Selectable start-up delay, response delay and delay on release
• Two separately adjustable response value ranges of 5…200 kΩ (Alarm 1, Alarm 2)
• Alarm signalling via LEDs ("AL1", "AL2"), a display and alarm relays ("K1", "K2")
• Automatic device self test with connection monitoring
• Selectable N/C or N/O relay operation
• Measured value indication via multi-functional LCD
• Fault memory can be activated
• RS-485 (galvanically isolated) including the following protocols:
• BMS interface (Bender measuring device interface) for data exchange with other Bender components
• Modbus RTU
• IsoData (for continuous data output)
• Password protection to prevent unauthorised parameter changes
.2 Functional descriptionas ISOMETER® measures the insulation resistance RF. It features two operating modes: En" und "DC". The two operating modes can be switched in the menu "SEt".
3.2.3 General measuri
The ISOMETER® measures thL1/+ and L2/- as well as the(between L2/- and earth).
When coupled to a DC systenominal system voltage theof the insulation resistance indicated by a "+" or "-" signrange of the faulty conduct
The partial resistances can bfaulty conductor (R %) using
Fault on cond
Fault on cond
When the ISOMETER® is coumined in a connected DC sy(+100 %) or L2/- (-100 %). C
It is possible to assign the dmenu. If the values RF oder Uwill be indicated by the LEDset in the "out" menu. In addfault memory "M" is activateIf the values R or U do not
Indication-100 % One-sided 0 % Symmetric+100 % One-sided
F
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a device error should occur, error codes will appear on the escribed below:
Description
ection errornections "E" or "KE" to earth are interrupted.
onnection, eliminate error. The error code will be erased auto-y once the error has been eliminated.tion fault systemrnal resistance of the system is too high or the connection r "L2/-" to the system is interrupted. The terminals "L1/+" and e connected false.
onnection, eliminate error. The error code will be erased auto-y once the error has been eliminated.
inals "L1/+" und "L2/-" are connected to the DC system to be ed with reversed polarity. Detection from Un < -30 VDC.
ement technique error:ystem interferences or a device error, the insulation measuring no longer updated. The pre- and main alarm are set for the insu-easuring value simultaneously.
tion invalid after software update:f a software update, "E.05" appears together with "E.08" if the
tware is no longer compatible with the calibration of the device. e previous software version must be installed or the device calibrated new in the factory.
missible system leakage capacitance Ce according to the et is exceeded (only in "dc" and "CHd" settings).ation error was detected during the device test.
Action:ror continues to exist after checking the device connections, an error inside the device.
hen malfunctions are detected or connections are missing, the LEDs "ON"/"AL1"/"AL2" ash. The respective error codes ("E.xx") will be indicated on the display and the relay "K2"
itches. The relays can be assigned to a device error with the parameter "Err" in the "out" enu in the alarm assignment.
E.08If the erthere is
Functionunction
.2.4 Isolation from the system to be monitored
the device has no supply voltage Us or is in stop mode, it decouples terminals "L1/+" nd "L2/-" internally from the IT system being monitored. In this case, an insulation easurement up to DC 500 V can be carried out using an insulation tester.
.2.5 Monitoring the insulation resistance
he two parameters that monitor the insulation resistance, "R1" and "R2", can be found in e response value menu "AL" (see table on page 16). The value R1 can only be set higher an the value R2. If the insulation resistance RF reaches or falls below the activated val-
es R1 or R2, an alarm message will be signalled. If RF exceeds the values R1 or R2 plus the ysteresis value (see table on page 16), the alarm will be cleared.
.2.6 Undervoltage/overvoltage monitoring
the response value menu "AL" (see page 16), the parameters ("U <" and "U >") for mon-oring the nominal system voltage Un can be activated or deactivated. The maximum un-ervoltage value is limited by the overvoltage value.he RMS value of the nominal system voltage Un is monitored. If the nominal system oltage Un reaches, falls below or exceeds the limit values ("U <" or "U >"), an alarm will e signalled. If the maximum permissible nominal system voltage Un set for the ISOME-ER® is exceeded, an alarm message will be initiated even when the overvoltage limit alue has been deactivated. The alarm will be deleted when the limit values plus hyster-sis (see page 16) are no longer violated.
.2.7 Self test/error codes
he integrated self test function checks the function of the insulation monitoring device, nd connection monitoring checks the connections to the system to be monitored. The larm relays are not switched during the self test. This can be changed using the param-ter "test" in the alarm assignment (menu "out", page 17). During the test, the display in-icates "tES".
Error codes
If, contrary to expectations,display. Some of these are d
Error code
E.01
PE connThe conAction:Check cmaticall
E.02
ConnecThe inte"L1/+" o"L2/-" arAction:Check cmaticall
E.03The termmonitor
E.05
MeasurDue to svalue is lation mCalibraIn case onew sofEither thmust be
E.07The perdatasheA calibr
F
isoGEN423_D00221_01_M_XXEN/06.20181
InefafateItma
A
T(s
M
Bae
3Inv("eIfp
3T"usimfault assigned to conductor L1/+, and the messages "-R1" and "-R2" indicate an insulation faTTsuthclInm
esponse times
time required by the ISOMETER® to determine the measured asuring value RF, the system leakage capacitance Ce, the the fault location R%, it is dependent on the insulation re-pacitance. System interferences can lead to longer operating f the mains voltage Un is independent of this and significant-
be set uniformly for all messages in the "t" menu using the ach alarm message specified in the alarm assignment hast its time can be used for interference suppression in the case of
ed when a threshold value of the respective measuring value ton without interruption. Every time the threshold value is vi-he response delay "ton" restarts once again.
is the sum of the operating time tae and the response delay
be set uniformly for all messages in the "t" menu using the ach alarm message specified in the alarm assignment hast its
ill continuously be signalled until the threshold value of the is not violated (including hysteresis) for the period of toff wit-e the threshold value is not violated for the period of toff, the rts once again.
voltage US the alarm indication for the preset timeis suppressed.
0
ult assigned to conductor L2/-. he message "test" indicates a self test.he message "S.AL" indicates a so-called "device start with alarm". After connecting to the
pply voltage and setting the parameter value to "S.AL = on", the ISOMETER® starts with e insulation measured value RF = 0 ? and sets all activated alarms. The alarms will be eared only when the measured values are up-to-date and no thresholds are exceeded. the factory setting "S.AL = off", the ISOMETER® starts without an alarm. It is recom-ended that the value set for the "S.AL" parameter value is identical for both relays.
Start-up delay t
After connection to the supply(0…10 s) in the parameter "t"
Functionunction
ternal device errors "E.xx" can be caused by external disturbances or internal hardware rrors. If the error message occurs again after restarting the device or after a reset to ctory settings (menu item "FAC") , the device must be repaired. After eliminating the ult, the alarm relays switch back automatically or by pressing the reset button. The self st can take a few minutes.
can be suppressed for the duration of the device start by setting the parameter in the enu "SEt" to "S.Ct = off". This allows the ISOMETER® to enter measurement mode quickly
fter connecting the supply voltage Us.
utomatic self test
he device runs a self test after connecting the supply voltage Us and later every 24 h electable at „t“ menu on page 17 : off, 1h, 24 h).
anual self test
y pressing the external test/reset button or the test button "T" on the device for > 1.5 s, self test is started. While holding down the test button "T", all device-relevant display lements appear on the display.
.2.8 Malfunction addition to the described self test, several functions in the insulation monitoring de-
ice are continuously checked during operation. If a fault is detected, the device error Err") will be signalled, the error code "E.xx" appears on the display as an identifier for the rror type xx and the LEDs "ON"/"AL1"/"AL2" will flash. the error occurs again after restarting the device or after restoring the factory settings, lease contact Bender Service.
.2.9 Signalling assignment of the alarm relays K1/K2he notifications for "device error", "insulation fault", "insulation impedance fault", ndervoltage/overvoltage fault", "device test" and "device start with alarm" can be as-
gned to the alarm relays via the "out" menu. An insulation fault is indicated by the essages "+R1", "-R1", "+R2" and "-R2". Messages "+R1" and "+R2" indicate an insulation
3.2.10 Measuring and r
Operating time tae
The operating time tae is thevalue. For the insulation mevoltages UL1e und UL2e and sistance and the leakage catimes. The measuring time oly shorter.
Response delay ton
The response delay ton can parameter "ton", whereby eown timer for ton. This delayshort measuring times.An alarm will only be signallis violated for the period of olated within the time ton, t
Total response time tan
The total response time tan time ton.
Delay on release toff
The delay on release toff canparameter "toff", whereby eown timer for toff. An alarm wrespective measured value hout interruption. Each timdelay on release "toff" resta
F
isoGEN423_D00221_01_M_XXEN/06.20181
3
Ifco
3
Ate
3
RRSToOpri
3
Tmreo
3
Waomemory must first be cleared via the menu using "Clr".
ols
ial hardware interface RS-485 with the following protocols:
essential component of the Bender measuring device inter-l). Data transmission takes place with ASCII characters.
cation layer messaging protocol and it provides Master/Slave en devices that are connected altogether via bus systems and messages have a 16-bit CRC (Cyclic Redundant Checksum), bility.
uously sends an ASCII data string with a cycle of approxima-ication with the ISOMETER® within this mode is not possible mitter may be connected to the RS-485 bus cable. The ASCII ETER® is described on page 27.
d rate and parity for the interface protocols are configured in
0", the menu entries baud rate and parity are not shown in the the IsoData protocol is activated.d bus address (i.e. not equal to 0), the menu item "baud rate" is n the menu. The parameter value "---" for the baud rate indica-vated BMS protocol. In this case, the baud rate for the BMS pro- to 9600 baud. If the baud rate is set unequal to "---", the otocol with configurable baud rate is activated.
a protocol can be cancelled by sending the command „Adr3“ on-transmission period of isoGEN423.
1
The IsoDatduring a n
Functionunction
.2.11 Password protection (on, OFF)
password protection has been activated (on), settings can only be made subject to the rrect password being entered (0...999).
.2.12 Factory settings FAC
ctivating the factory setting will reset all modified settings, with the exception of the in-rface parameters, to the default upon delivery.
.2.13 External, combined test or reset button T/R
eset = Press the external button < 1.5 seset followed by a test = Press the external button > 1.5 stop measuring function = Press and hold the external buttonhe stop function can also be triggered via an interface command and in this case it can nly be reset via the interface.nly one ISOMETER® may be controlled via an external test/reset button. A galvanic arallel connection of several test or reset inputs for testing multiple insulation monito-ng devices is not allowed.
.2.14 Fault memory
he fault memory can be activated or deactivated with the parameter "M" in the "out" enu. When the fault memory is activated, all pending alarm messages of the LEDs and lays remain available until they are deleted by using the reset button (internal/external)
r the supply voltage Us is turned off.
.2.15 History memory HiS
hen the first error occurs after clearing the history memory, all measured values (that re ticked in the table on page 18) are saved in the history memory. This data can be read ut using the "HiS" menu item. In order to be able to record a new data record, the history
3.2.16 Interface/protoc
The ISOMETER® uses the ser
• BMS
The BMS protocol is anface (BMS bus protoco
• Modbus RTU
Modbus RTU is an applicommunication betwenetworks. Modbus RTUwhich guarantees relia
• IsoData
The ISOMETER® contintely 1 second. Communand no additional transdata string for the ISOM
The parameter address, bauthe "out" menu.
With "Adr =menu andWith a validisplayed ites the actitocol is setModbus pr
isoGEN423_D00221_01_M_XXEN/06.2018
commissioning4
4
for screw mounting, push-wire terminal connection:
All dimensions in mm
opened at the lower part marked with an arrow.
and "A2" to the supply voltage according toections are to be protected against short-circuit by means of se is recommended). Devices for protection against short-
circuit in conformity with IEC 60364-4-43 for the coupling of terminals "L1/+"/"L2/-" to the an be omitted if the wiring is carried out in such a manner as circuit to a minimum. controlled via a test/reset button. It is not allowed to use a
al test or reset inputs for combined testing of ISOMETER®s.
93
2
2
10
7
Zubehör
Klick
M4
10
0
2
1
3
12
IT system to be monitored cto reduce the risk of a short-Only one ISOMETER® may beparallel connection of sever
Installation, connection and. Installation, connection and commissioning
.1 Installation • DIN rail mounting:
Snap the mounting clip at the rear of the device onto the DIN rail so that it sits secu-rely.
• Screw fixing:Use a tool to position the rear mounting clips so that they project beyond the enclo-sure (a second mounting clip is required, see ordering information). Fix the device with two M4 screws, see the following sketch.
Only qualified personnel are permitted to carry out the work necessary to in-stall, commission and run a device or system.
DANGER
Risk of electric shock!Touching live parts of the system carries the risk of:
• An electric shock
• Damage to the electrical installation
• Destruction of the device
Before installing and connecting the device, make sure that the installati-on has been de-energised. Observe the rules for working on electrical ins-tallations.
Dimension diagram, sketch
The front plate cover can be
4.2 Wiring diagramConnect the terminals "A1" IEC 60364-4-43, i.e. the conna protective device (a 6 A fu
45
67,5
36
31,147,5
74,5
In
isoGEN423_D00221_01_M_XXEN/06.20181
C
Fo
L1/+L2/-
PEL3
5IP
stallation, connection and commissioning
3
onnect the device as illustrated in the wiring diagram:
r details about the conductor cross sections required for wiring, refer to the technical data on page 28.
US
L1/+ KE A1 A2
Test / Reset
14 24 11
K1 K2
T/R
L2/ E
ON
T R MENU
AL1 AL2k
< k
ISOMETER
isoGEN423
E KE A1 A2
14 24 11
T/R A B
COM46
RS-485
A B
R
Ronoff
L1/+ L2/-
commissioningIn
isoGEN423_D00221_01_M_XXEN/06.20181
W
A
E
L
T
1
1
A
ER® is properly connected to the system to be monitored.
ltage Us to the ISOMETER®. calibration, a self test and adjusts itself to the IT system to be system leakage capacitances are involved, this procedure standard display then appears showing the present insula-
ls an error-free update of the resistance and capacitance measuring value cannot be updated due to disturbances, blanked.
stem to be monitored can also be selected as standard dis-easured value display U L1L2 with the buttons and the ith the button, the standard display is changing to
t by pressing the test button "T". Whilst the test button is , all display elements available for this device are shown. " symbol flashes. Any internal malfunctions detected are
s error codes (see page 9). The alarm relays are not checked setting). The setting can be changed in the "out" menu, so the alarm state during the manual self test.
for suitability.Are the settings suitable for the installation to be monitored?
gs are shown in the tables from page 16.
ing a genuine insulation fault. the system being monitored against earth, e.g. via a suita-
4
The list of factory settin
5. Check the function usCheck the ISOMETER® inble resistance.
Installation, connection andstallation, connection and commissioning
iring diagram legend:
Terminal Connections
1, A2Connection to the supply voltage Us via fuse (line protection):If supplied from an IT system, both lines have to be protected by a fuse.*
, KEConnect each terminal separately to PE: The same wire cross section as for "A1", "A2" is to be used.
1/+, L2/– Connection to the IT system to be monitored
/R Connection for the external combined test and reset button
1, 14 Connection to alarm relay "K1"
1, 24 Connection to alarm relay "K2"
, B RS-485 communication interface with connectable terminating resistanceExample: Connection of a BMS-Ethernet-Gateway COM465IP
* For UL applications:Only use 60/75 °C copper lines!For UL and CSA applications, it is mandatory to use 5 A fuses for the pro-tection of the supply voltage Us.
4.3 Commissioning1. Check that the ISOMET
2. Connect the supply voThe device carries out amonitored. When high may take up to 30 s. Thetion resistance, e.g.:
The pulse symbol signameasuring values. If thethe pulse symbol will beThe voltage of the IT syplay. By selecting the mfollowing acceptance wU L1L2.
3. Start a manual self tespressed and held downDuring the test, the "tESshown on the display aduring the test (factorythat the relays switch to
4. Check factory setting
isoGEN423_D00221_01_M_XXEN/06.2018
5TAu
ts in usey Function
ONAL1AL2
green - onyellow - alarmyellow - alarm
T
Up buttonTest button ( press > 1.5 s)By pressing and holding the test button, the display elements are indicated.
R
Down buttonReset button (press > 1.5 s)
MENU
ENTER
MENU button (press > 1.5 s)
1
U : Nominal system voltage Un R : Insulation resistance RF C : System leakage capacitance Ce
2 Monitored conductor
3= : Voltage type DC
~ : Voltage type AC4 Measured values and units5 Password protection is activated.
6In the menu mode, the operating mode of the respec-tive alarm relay is displayed.
7Communication interfaceWith measured value: isoData operation
8 The fault memory is activated.9 Condition symbols
10Identification for response values and response value violation
: Error-free measured value update
Assignment according to table on page 17
15
Operation of the device. Operation of the devicehe menu structure is illustrated schematically on the following pages.fter pressing the "MENU" button for > 1.5 s, the first menu item "AL" appears. Use nd (Enter) buttons for navigation and settings.
Up and down button:- to navigate up or down in the menu settings- increasing or decreasing values
MENU
Pressing the MENU/Enter button for more than 1.5 s:- Starts menu modeor- or when the device already is in menu mode: Exit menu item (Esc). Any recent changes will not be stored.
Pressing the MENU/Enter button for less than 1.5 s:- Confirms menu selection or - confirms modified value
The areas of the display that can be configured flash!
5.1 Display elemenDevice front/displa
ON AL1 AL2
T R MENU
+
test onoff MAdr
L1L2C
<>
skM %
Fµ
{ { {{
1 2 3
4
5678
{
9
{
10
O
isoGEN423_D00221_01_M_XXEN/06.20181
5
ettingnitor the insulation resistance, "R1" and "R2", can be found in L". The value R1 can only be set higher than the value R2. If
reaches or falls below the activated values R1 or R2, this leads xceeds the values R1 or R2 plus the hysteresis (see table ared.U >") for monitoring the mains voltage can also be activated sponse value menu . The maximum undervoltage value is alue.
= Customer settings
Setting value Description
Value range FAC Ke
R2 … 250 46 kΩPre-alarm value Ran1Hys. = 25 %/min. 1kΩ
5… R1 23 kΩAlarm value Ran2Hys. = 25 %/min. 1kΩ
10 … U> 10 VAlarm value undervoltage RMSHys . = 5 %/min. 5 V
U< … 500 500 VAlarm value overvoltage RMSHys. = 5 %/min. 5 V
6
AL Querying and set response valuesout Configuring fault memory, alarm relays and interface
t Setting delay times and self test cyclesSEt Setting device control parametersInF Querying software versionHiS Querying and clearing the history memoryESC Going to the next higher menu level
Operation of the deviceperation of the device
.2 Menu overview
Menu item Parameter
Enteror t > 5 min.
k
R
R [kΩ] C [μF]U L1 L2 [ V] UL1 [ V] UL2 [ V] R [ %]
Standard display
Measurement display
Menu
Esc
Menu selection
ALouttSEtInFHiSESC
Enter
EscParameter selection
P1
. . .
Pn
ESC
Optional Password
Edit parameters
Save parameters
Enter
Enter
Enter
Esc
Function Button Application
Enter
Menu
Esc
Test
Reset
Select, acknowledge input
Call menu
Exit menu item
Start device test
Clear fault memory
/ MENU Short
> 1.5 s
> 1.5 s
> 1.5 s
> 1.5 s
/ MENU
/ MENU
/ T
/ R
5.3 "AL" menu
5.3.1 Response value sThe two parameters that mothe response value menu "Athe insulation resistance RF to an alarm message. If RF ebelow), the alarm will be cleThe parameters ("U <" and "or deactivated in the "AL" relimited by the overvoltage v
FAC = Factory setting; Ke
Display Activation
FAC Ke
R1 < on
R2 < on
U < off
U > off
O
isoGEN423_D00221_01_M_XXEN/06.20181
5
5
F
5In"oInsi
F
r+
r-R
r+
r-R
rU
r1 U
off r2 onAlarm Un
rt
rS
nfiguration
Ke = Kundeneinstellungen
ration
= Customer settings; ified by FAC.
on
= Customer settings
Description
Memory function for alarm messages (fault memory)
value Description
AC Ke
3 ( ) BusAdr.
Adr = 0 deactivates BMS as well as Mod-bus and activates isoData with conti-nuous data output (115k2, 8E1)
---“ ( ) Baud rate “---“ --> BMS-Bus (9k6, 7E1)"1.2k" … "115k" --> Modbus (variable,
variable)
1 ( )
Mod
bus
8E1 - 8 data bits even parity, 1 stop bit8o1 - 8 data bitsodd parity, 1 stop bit8n1 - 8 data bits no parity, 1 stop bit
ing value Description
Value range FAC Ke
0 s Start-up delay when starting the device0 s Response delay K1 and K20 s Delay on release K1 and K2
24 h Repetition time device test
7
AC = Factory setting; Ke = Customer settings: LED off : LED flashes : LED on
> V U > V Overvoltage
1 est
off r2 test
off Manually started device test
1 .AL
off r2 S.AL
off Device start with alarm FAC = Factory setting; Ke
t 0 … 10 ton 0 … 99 toff 0 … 99 test OFF / 1 / 24
Operation of the deviceperation of the device
.4 Menu "out"
.4.1 Configuration of the relay operating mode
AC = Factory setting; Ke = Customer settings
.4.2 Relay alarm assignment "r1" and "r2" and LED assignment the alarm assignment, each alarm is assigned to the respective relay with the setting n". The LED indication is directly assigned to the alarms and is not related to the relays. the event of an unsymmetrical insulation fault, only the alarm corresponding to the as-gned conductor (L1/+ or L2/-) will be displayed.
Relay K1 Relay K2 Description
Display FAC Ke Display FAC Ke
n.c. n.c. Operating mode of the relay n.c./n.o.
K1 „r1“ K2 „r2“ LEDs Alarm descriptionDisplay FAC Ke Display FAC Ke ON AL1 AL2
off on Device error E.xx
1 R1 < Ω
on r2 +R1 < Ω
off Pre-alarm R1 Fault RF at L1/+
11 < Ω
on r2 -R1 < Ω
off Pre-alarm R1 Fault RF at L2/-
1 R2 < Ω
off r2 +R2 <Ω
on Alarm R2 Fault RF at L1/+
1 2 < Ω
off r2 -R2 < Ω
on Alarm R2 Fault RF at L2/-
1 < V
off r2 U < V
on Alarm UnUndervoltage
1 2
1 Err 2 Err
5.4.3 Fault memory co
FAC = Werkseinstellung;
5.4.4 Interface configu
FAC = Factory settings; Ke ( ) = User setting that is not mod
5.5 „t“ menu
5.5.1 Time configurati
Display FAC Ke
M off
DisplaySetting
Value range F
Adr 0 / 3 … 90
Adr 1 --- /
1,2k … 115k “
Adr 28E18o18n1
8E
Display Sett
O
isoGEN423_D00221_01_M_XXEN/06.20181
5
5
F
e display and history memory shown on the display (standard display). All other measuring standard display after a maximum of 5 min. The fault location tory memory (HiS) in R mode. In Z mode only will ZF be stored pulse symbol indicates a current measured value. If this sym-asurement is still running and the latest valid measured value ols "<" or ">" will be displayed additionally to the measured e has been reached or violated, or the measured value is ing range.
an be displayed in the history memory.alues are permanently displayed (standard display). All other ys are switching to the standard display after 5 minutes at the
Description
Insulation resistance RF *1 kΩ ... 2 MΩ Resolution 1 kΩ The + or - sign appears when a fault RF < 100 kW is mainly detected at L1/+ or L2/- with |R%| ≥ 30 %. In addition, it must be Un ≥ 20 V in the DC system.
System leakage capacitance Ce1 nF ... 17 μF Resolution 1 nFNominal system voltage L1 - L2 Un *0 VtrueRMS … 500 VtrueRMS Resolution 1 VtrueRMS
In case of a DC system, the "+" oder "-" sign indicates atURMS > 20 V the polarity at the terminals "L1/+" und "L2/-". The sign "~" indicates an AC system.Residual voltage L1/+ - PE UL1e 0 VDC … ± 500 VDC Resolution 1 VDC
Residual voltage L2/- - PE UL2e 0 VDC … ± 500 VDC Resolution 1 VDC
± R %
Fault location in % -100 % …+100 % This value display happens only in the "dc" setting from the mains voltage Un ≥ 20 VDC.
8
: The measuring value c* : Only these measuring v
measuring value displalatest.
Operation of the deviceperation of the device
.6 Menu "SEt"
.6.1 Function configuration
AC = Factory setting; Ke = Customer settings
Display Activation Setting value Description
FAC Ke Value range FAC Ke
off 0 . . . 999 0 Password for parameter setting
GEn/dc/CHd GEn/dc/CHd GEn
Selecting the system to be monito-red GEn: Generators (AC, AC with con-nected DC, DC )dc: DC systemCHd: DC system (Calculation of RF only when Un ≥ 40 VDC)
nEt onMonitoring system connection during device test
S.Ct on Device test during device startFAC Restore factory settings SYS For Bender Service only
5.7 Measuring valuOnly RF or Un is permanentlyvalue displays switch to the will only be stored in the hisin the history memory. The bol does not appear, the mewill be displayed. The symbvalue when a response valubelow or above the measur
HiS Display
± R kΩ
C μF
~ ± U L1 L2 = V
± U L1 = V
± U L2 = V
isoGEN423_D00221_01_M_XXEN/06.2018
rotocol6T(B
19
Data access using the BMS p. Data access using the BMS protocolhe BMS protocol is an essential component of the Bender measuring device interface MS bus protocol). ASCII characters are used for the data transfer.
BMS channel no. Operation value Alarm
1 RF Pre-alarm R1
2 RF Alarm R23 ---- ----4 Un Undervoltage
5 Un Overvoltage6 --- Connection fault earth (E.01)7 --- Connection fault system (E.02)8 --- All other device faults (E.xx)9 Fault location [%] ---
10 Ce ---11 --- ---12 Update counter ---13 UL1e ---
14 UL2e ---15 --- ---
isoGEN423_D00221_01_M_XXEN/06.2018
us RTU protocol7Rrefu
7Trenb
7In1ch
7
BBBBB
BBBBB
egister (parameter setting)e modified with the Modbus command 0x10 (set multiple rs are available from address 3000. The content of the regis-age 22.
master to the ISOMETER®ETER® with address 3 the content of the register address 3003
wer to the master
Name Example
odbus address 0x03e 0x10
0x0BBBgisters 0x0001ta bytes 0x02
0x0002sum 0x9F7A
Name Example
odbus address 0x03e 0x10 0x0BBBgisters 0x0001sum 0x722A
20
Data access using the Modb. Data access using the Modbus RTU protocolequests to the ISOMETER® can be made using the function code 0x03 (read multiple gisters) or the command 0x10 (write multiple registers). The ISOMETER® generates a nction-related answer and sends it back.
.1 Reading out the Modbus register from the ISOMETER®he required Words of the process image can be read out from the ISOMETER® "holding gisters" using the function code 0x03. For this purpose, the start address and the
umber of the registers to be read out have to be entered. Up to 125 Words (0x7D) can e read out by one single request.
.1.1 Command of the master to the ISOMETER® the following example, the ISOMETER® master requests the content of the register
003 with the address 3. The register contains the channel description of measuring annel 1.
.1.2 Answer of the ISOMETER® to the master
Byte Name Example
yte 0 ISOMETER® Modbus address 0x03yte 1 Function code 0x03yte 2, 3 Start address 0x03EByte 4, 5 Number of registers 0x0001yte 6, 7 CRC16 Checksum 0xF598
Byte Name Beispiel
yte 0 ISOMETER® Modbus address 0x03yte 1 Function code 0x03yte 2 Number of data bytes 0x02yte 3, 4 Data 0x0047yte 7, 8 CRC16 Checksum 0x81B6
7.2 Write Modbus rRegisters in the device can bregisters). Parameter registeter is listed in the table on p
7.2.1 Command of theIn this example, in the ISOMis set to 2.
7.2.2 ISOMETER® ans
Byte
Byte 0 ISOMETER® MByte 1 Function codByte 2, 3 Start registerByte 4, 5 Number of reByte 6 Number of daByte 7, 8 DataByte 9, 10 CRC16 Check
Byte
Byte 0 ISOMETER® MByte 1 Function codByte 2, 3 Start registerByte 4, 5 Number of reByte 6, 7 CRC16 Check
us RTU protocolD
isoGEN423_D00221_01_M_XXEN/06.20182
7Ife
7
000000
BBBB
1
Data access using the Modbata access using the Modbus RTU protocol
.3 Exception code a request cannot be answered for whatever reason, the ISOMETER® will send a so-called xception code with which possible faults can be narrowed down.
.3.1 Structure of the exception code
Exception code Description
x01 Impermissible functionx02 Impermissible data accessx03 Impermissible data valuex04 Internal faultx05 Acknowledgement of receipt (answer will be time delayed)x06 Request not accepted (repeat request, if necessary)
Byte Name Example
yte 0 ISOMETER® Modbus address 0x03yte 1 Function code (0x03) + 0x80 0x83yte 2 Data (exception code) 0x04yte 3, 4 CRC16 Checksum 0xE133
isoGEN423_D00221_01_M_XXEN/06.2018
t of the ISOMETER®8Duo
R
1031
Description Format Unit Value range
Reserved --- --- ---Reserved --- --- ---Reserved --- --- ---Reserved --- --- ---Reserved --- --- ---
Pre-alarm value resist-ance measurement
"R1"UINT 16 kΩ R2 … 250
Reserved --- --- ---Alarm value resist-ance measurement
"R2"UINT 16 kΩ 5 … R1
Activation alarm value undervoltage "U<"
UINT 16 ---0 = Inactive1 = Active
Alarm value under-voltage "U<"
UINT 16 V 10 … U>
Activation alarm value overvoltage "U>"
UINT 16 ---0 = Inactive1 = Active
Alarm value Overvoltage "U >"
UINT 16 V U< … 500
Memory function for alarm messages
(Fault memory) "M"UINT 16 ---
0 = Inactive1 = Active
Operating mode of relay 1 "r1"
UINT 16 ---0 = n.o. 1 = n.c.
Operating mode of relay 2 "r2"
UINT 16 ---0 = n.o. 1 = n.c.
Bus address "Adr" UINT 16 --- 0 / 3 … 90
Baud rate "Adr 1" UINT 16 ---
0 = BMS 1 = 1,2 k 2 = 2,4 k 3 = 4,8 k 4 = 9,6 k
5 = 19,2 k 6 = 38,4 k 7 = 57,6 k
8 = 115,2 k
Parity "Adr 2" UINT 16 ---0 = 8N1 1 = 8O1 2 = 8E1
22
( ) = Channel description code (see chapter 8.2); [ ] = Alarm type (see chapter 8.1.2.2)
1032 bis
1035
Measured value update counter
--- (1022) [no alarm]
--- ------
Device error(115)[device error]
3016 RW
3017 RW
Modbus register assignmen. Modbus register assignment of the ISOMETER®epending on the device condition, the information in the registers is the measured val-e without alarm; the measured value with alarm 1; the measured value with alarm 2; or nly the device error.
egisterMeasured value
Device errorWithout alarm Alarm 1 Alarm 2
1000 bis
1003
RFInsulation fault (71)
[no alarm]
RFInsulation fault (1)
[prewarning]
RFInsulation fault (1)
[alarm]
--- Connection earth
(102)[device error]
1004 bis
1007--- --- --- ---
1008 bis
1011
UnVoltage (76)[no alarm]
UnUndervoltage
(77) [alarm]
UnOvervoltage(78) [alarm]
---Connection to sys-
tem (101)[device error]
1012 bis
1015
Cecapacitance (82)
[no alarm]--- --- ---
1016 bis
1019
UL1eVoltage (76)[no alarm]
--- --- ---
1020 bis
1023
UL2eVoltage (76)[no alarm]
--- --- ---
1024 bis
1027
Fault location in % --- (1022)
[no alarm]--- --- ---
1028 bis --- --- --- ---
Register Property
3000 RW3001 RW3002 RW3003 RW3004 RW
3005 RW
3006 RW
3007 RW
3008 RW
3009 RW
3010 RW
3011 RW
3012 RW
3013 RW
3014 RW
3015 RW
t of the ISOMETER®M
isoGEN423_D00221_01_M_XXEN/06.20182
8004 WO for parameters resetta- UINT 16 --- 0x4653 „FS“
ead only; WO = Write only
Software version number
UINT 16 ---Software version
Software version: Year UINT 16Software version:
MonthUINT 16
Software version: Day UINT 16Modbus driver version UINT 16
Description Format Unit Value range
3
ble by FAC8005 WO Start device test UINT 16 --- 0x5445 „TE“8006 WO Clear fault memory UINT 16 --- 0x434C „CL“
9800 bis 9809
RO Device name
UNIT 16 (ASCII) -
siehe chapter 8.1.1
--- ---
9820 ROSoftware
ID numberUINT 16 ---
Software D Number
Modbus register assignmenodbus register assignment of the ISOMETER®
3018 RWStart-up delay "t" dur-
ing device startUINT 16 s 0 …10
3019 RWResponse delay "ton"
for relays "K1" and "K2"UINT 16 s 0 … 99
3020 RWDelay on release "toff" for relays "K1" and "K2"
UINT 16 s 0 … 99
3021 RWRepetition time "test"
for automatic device test
UINT 16 ---0 = OFF 1 = 1 h
2 = 24 h3022 RW Reserved --- --- ---
3023 RWSystem and function
selectionUNIT 16 ---
0 = GEn1 = dc
2 = CHd
3024 RWTest of the system con-nection during device
test "nEt"UINT 16 ---
0 = Inactive1 = Active
3025 RWDevice test during device start "S. Ct"
UINT 16 ---0 = Inactive1 = Active
3026 RWRequest stop mode
(0 = deactivate device)UINT 16 ---
0 = Stop1 = ---
3027 RWAlarm assignment of
relay 1 "r1"UINT 16 ---
Bit 9 … Bit 1(see
chapter 8.1.3)
3028 RWAlarm assignment of
relay 2 "r2"UINT 16 ---
Bit 9 … Bit 1(see
chapter 8.1.3)
8003 WOFactory settings for all
parametersUINT 16 --- 0x6661 „fa“
Factory setting only
Register Property Description Format Unit Value range
RW = Read/Write; RO = R
9821 RO
9822 RO
9823 RO
9824 RO9825 RO
Register Property
t of the ISOMETER®M
isoGEN423_D00221_01_M_XXEN/06.20182
8
8T
8Eficath
8
PIES
e and test type (internal/external)
bits 0 to 2. Bits 3, 4 and 5 are reserved and always have the et when an internal or external test has been completed.
he complete byte is calculated from the sum of the alarm type
4 3 2 1 0 Meaning
Rese
rved
Rese
rved
Ala
rm
Erro
rs
X X 0 0 0 No alarm
X X 0 0 1 Prewarning
X X 0 1 0 Device error
X X 0 1 1 Reserved
X X 1 0 0 Warning
X X 1 0 1 Alarm
X X 1 1 0 Reserved
X X … … … Reserved
X X 1 1 1 Reserved
X X X X X No test
X X X X X Internal test
X X X X X External test
4
resentation of the bit order for processing analogue measuring values according toEE 754 = Sign; E = Exponent; M = Mantissa
S E E E E E E E E M M M M M M M M M M M M M M M M M M M M M M M
Modbus register assignmenodbus register assignment of the ISOMETER®
.1 Device-specific data type of the ISOMETER®
.1.1 Device namehe data format of the device name is specified below.
.1.2 Measuring valuesach measuring value is available as a channel and consists of 8 bytes (4 registers). The rst measuring value register address is 1000. The structure of a channel is always identi-l. Content and number depend on the device. The structure of a channel is shown with e example of channel 1:
.1.2.1 Float = Floating point value of the channels
Word0x00
0x01 0x02 0x03 ------------------- 0x08 0x09
10 Words in totalEach Word contains two ASCII characters
1000 1001 1002 1003
HiByte LoByte HiByte LoByte HiByte LoByte HiByte LoByte
Floating point value (Float)Alarm type and
test type (AT&T)
Range and unit (R&U)
Channel description
Wor
d
0x00 0x01
Byt
e HiByte LoByte HiByte LoByte
Bit 31 30 24 23 22 16 15 8 7 0
8.1.2.2 AT&T = Alarm typ
The alarm type is coded by value 0. Bit 6 or 7 is usually sOther values are reserved. Tand the test type.
Bit 7 6 5
Tes
t ext
erna
l
Tes
t int
erna
l
Rese
rved
Ala
rm ty
pe
X X X
X X X
0 0 X
X X X
X X X
X X X
X X X
X X X
X X X
Test
0 0 X
0 1 X
1 0 X
t of the ISOMETER®M
isoGEN423_D00221_01_M_XXEN/06.20182
8
T
t of the relays ed to each relay. For the assignment of each relay, a 16-bit-
s described below. The following table applies to relay 1 and or the relay number. A set bit activates the specified function.
Meaning
When reading, always 0 When writing, any valueDevice error E.xxPre-alarm R1- Fault RF at L1/+
Pre-alarm R1- Fault RF at L2/-
Alarm R2 - Fault RF at L1/+
Alarm R2 - Fault RF at L2/-
Alarm message Un - Undervoltage
Alarm message Un - Overvoltage
Manually started self testDevice start with alarmWhen reading, always 0When writing, any valueWhen reading, always 0When writing, any valueWhen reading, always 0 When writing, any valueWhen reading, always 0When writing, any valueWhen reading, always 0When writing, any valueWhen reading, always 0 When writing, any value
5
Modbus register assignmenodbus register assignment of the ISOMETER®
.1.2.3 R&U = Range and unit
• The units of bits 0 to 4 are coded.
• Bits 6 and 7 describe the validity range of a value.
• Bit 5 is reserved.
he complete byte is calculated from the sum of the unit and the range of validity.
Bit 7 6 5 4 3 2 1 0 Bedeutung
Un
it
- - - 0 0 0 0 0 Invalid (init)- - - 0 0 0 0 1 No unit
- - - 0 0 0 1 0 Ω- - - 0 0 0 1 1 A- - - 0 0 1 0 0 V- - - 0 0 1 0 1 %- - - 0 0 1 1 0 Hz- - - 0 0 1 1 1 Baud- - - 0 1 0 0 0 F- - - 0 1 0 0 1 H- - - 0 1 0 1 0 °C- - - 0 1 0 1 1 °F- - - 0 1 1 0 0 Second- - - 0 1 1 0 1 Minute- - - 0 1 1 1 0 Hour- - - 0 1 1 1 1 Day- - - 1 0 0 0 0 Month
Ran
ge
of v
alid
ity 0 0 X X X X X X Actual value
0 1 X X X X X X The actual value is lower1 0 X X X X X X The actual value is higher
1 1 X X X X X X Invalid value
8.1.3 Alarm assignmenSeveral alarms can be assignregister is used with the bitrelay 2, in which "x" stands f
Bit Display indication
0 Reserved
1 x Err2 rx +R1 < Ω
3 rx -R1 < Ω
4 rx +R2 < Ω
5 rx -R2 < Ω
6 rx U < V
7 rx U > V8 rx test9 rx S.AL
10 Reserved
11 Reserved
12 Reserved
13 Reserved
14 Reserved
15 Reserved
t of the ISOMETER®M
isoGEN423_D00221_01_M_XXEN/06.20182
8
0
1
7
7
7
7
8
8
1
1
1
1
1
data type descriptions are required.ecessary in this case.
Description of parameters
measured value invalid.tem of this parameter is not displayed.d value/no messagealue/parameter inactivealue/parameter only temporarily inactive (e.g. while transmitting a eter). Indication in the menu "…".measured value (value) unit not displayedcode selection menu) unit not displayed 18 characters (e.g. device type, - variant, …)
h
dress (unit not displayed)
iplication [*]ion [/]
6
Modbus register assignmenodbus register assignment of the ISOMETER®
.2 Channel descriptions
ParameterMeasuring value description /
Alarm message / Operating message
Note
(0x01) Insulation fault1 (0x47) Insulation fault Insulation resistance RF in Ω6 (0x4C) Voltage Measured value in V7 (0x4D) Undervoltage8 (0x4E) Overvoltage2 (0x52) Capacitance Measured value in F6 (0x56) Insulation fault Impedance Zi01 (0x65) Connection system02 (0x66) Connection earth15 (0x73) Device error Fault ISOMETER®29 (0x81) Device error45 (0x91) Own address
To convert parameter data,Text representation is not n
Parameter1023 (0x3FF) Parameter/
The menu i1022 (0x3FE) No measure1021 (0x3FD) Measured v1020 (0x3FC) Measured v
new param1019 (0x3FB) Parameter/1018 (0x3FA) Parameter (1017 (0x3F9) String max.1016 (0x3F8)
1015 (0x3F7) Time 1014 (0x3F6) Date: Day1013 (0x3F5) Date: Mont1012 (0x3F4) Date: Year1011 (0x3F3) Register ad1010 (0x3F2) Time 1009 (0x3F1) Factor mult1008 (0x3F0) Factor divis1007 (0x3EF) Baud rate1022 (0x3FE)
1023 (0x3FF) Invalid
isoGEN423_D00221_01_M_XXEN/06.2018
9IntipIsIn
0x0080 Alarm overvoltage Un
27
0x0100 Message system test0x0200 Device start with alarm
12Update counter, consecutively counts from 0 to 99.It increases with the update of the insulation resistance value.
<CR><LF> String end
IsoData data string. IsoData data string IsoData mode, the ISOMETER® continuosly sends the whole data string with a cycle
me of approximately 1 s. Communication with the ISOMETER® within this mode is not ossible and no additional sender may be connected via the RS-485 bus cable.oData is activated in the menu "out", menu item "Adr" when it has been set to Adr = 0. this event, the symbol "Adr" flashes on the measuring value display.
String Description
!; Start symbol v; Insulation fault location ' ' / '+' / '-' 1234, 5; Insulation resistance RF [kΩ]
12345; System leakage capacitance Ce [nF] (only in „GEn“ setting)
123456; reserved
+1234;Nominal system voltage Un [VtrueRMS] Nominal system voltage type: AC or unknown: ' ' DC: '+' / '-'
+1234; Residual voltage UL1e [VDC]
+1234; Residual voltage UL2e [VDC]
+123; Insulation fault location -100 … +100 [%]123456; reserved
1234;
Alarm message [hexadecimal] (without leading "0x")
The alarms are included in this value with the OR function.Assignment of the alarms:0x0002 Device fault 0x0004 Prewarning insulation resistance RF at L1/+0x0008 Prewarning insulation resistance RF at L2/-0x000C Prewarning insulation resistance RF symmetrical0x0010 Alarm insulation resistance RF at L1/+0x0020 Alarm insulation resistance RF at L2/-0x0030 Alarm insulation resistance RF symmetrical0x0040 Alarm undervoltage Un
isoGEN423_D00221_01_M_XXEN/06.2018
1
1(
InD
RaOvRa
Ra
PoPr
Vo
SSuTo
.................................................................................................................. ≥ 115 kΩCe...................................................................................................................≤ 5 μF.................................................................................................................... ≤ 700 V
..........................................................................................Ran2…200 kΩ (46 kΩ)*
............................................................................................. 5 kΩ…Ran1 (23 kΩ)*
........................................................................................... ±15 %, at least ±2 kΩ
.................................................................................................. 25 %, at least 1 kΩ
.......................................................................................... 10 V…U> (off/10 V)*
.......................................................................................U<…500 V (off/500 V)*
............................................................................................... ±5 %, at least ±5 Vequency ≥ 400 Hz............................................................................. -0,015 %/Hz...................................................................................................... 5 %, at least 5 V
Ce=1 μF according to IEC 61557-8 .............................................................. ≤ 1 s........................................................................................................ 0…10 s (0 s)*........................................................................................................ 0…99 s (0 s)*........................................................................................................ 0…99 s (0 s)*
........................................................ LC display, multi-functional, not illuminated resistance (RF) ................................................................................. 1 kΩ…2 MΩ.......................................................................................... ±15 %, at least ±2 kΩystem voltage (Un) ......................................................................... 0…500 VRMS.............................................................................................. ±5 %, at least ±5 Vkage capacitance of RF > 10 kΩ (only „dc“ mode) .............................0…17 μF
Ce ≤ 5 μF ...................................................................... ±15 %, at least ± 0,1 μF.............................................................................................. off/0…999 (0, off)*................................................................................................................. on/(off)*
..................................................................... RS-485/BMS, Modbus RTU, isoData
.................. BMS (9.6 kBit/s), Modbus RTU (selectable), isoData (115.2 kBits/s)
.............................................................................................................. ≤ 1200 mE on one side ..................................................................... min. J-Y(St)Y 2 x 0,6
........................................................ 120 Ω (0.25 W), internal, can be connected
........................................................................................................... 3…90 (3)*
28
Frequency range Us .............................................................................................................................................. 47…63 HzPower consumption ....................................................................................................................................... ≤ 3 W, ≤ 9 VA
IT system being monitoredNominal system voltage Un ........................................................................................ 3(N)AC, AC 0…400 V/DC 0…400 VTolerance of Un ............................................................................................................................................................. +25 %Frequency range of Un ................................................................................................................................. DC, 35…460 Hz
Measuring circuitMeasuring voltage Um.................................................................................................................................................... ±12 VMeasuring current Im at RF, ZF = 0 .......................................................................................................................... ≤ 110 μA
Interface/protocol .....................................Baud rate ...................................................Cable length (9.6 kBits/s) .........................Cable: twisted pairs, shield connected to PTerminating resistor ..................................Device address, BMS bus, Modbus RTU ....
Technical data0. Technical data
0.1 Tabular presentation)* = factory setting
sulation coordination acc. to IEC 60664-1/IEC 60664-3efinitions:
Measuring circuit (IC1) .................................................................................................................................L1/+, L2/-Supply circuit (IC2) ............................................................................................................................................... A1, A2Output circuit (IC3) ..........................................................................................................................................11, 14, 24Control circuit (IC4) ................................................................................................................................. E, KE, T/R, A, B
ted voltage....................................................................................................................................................................400 Vervoltage category ............................................................................................................................................................ IIIted impulse voltage:
IC1/(IC2-4)................................................................................................................................................................ 6 kVIC2/(IC3-4)................................................................................................................................................................ 4 kVIC3/IC4 ..................................................................................................................................................................... 4 kV
ted insulation voltage:IC1/(IC2-4)..............................................................................................................................................................400 VIC2/(IC3-4 ).............................................................................................................................................................250 VIC3/IC4 ...................................................................................................................................................................250 V
lution degree ..................................................................................................................................................................... 3otective separation (reinforced insulation) between:
IC1/(IC2-4).....................................................................................................................Overvoltage category III, 600 VIC2/( IC3-4 )...................................................................................................................Overvoltage category III, 300 VIC 3/IC4 ..........................................................................................................................Overvoltage category III, 300 V
ltage test (routine test) according to IEC 61010-1: IC2/( IC3-4 )......................................................................................................................................................AC 2,2 kVIC 3/IC4 .............................................................................................................................................................AC 2,2 kV
upply voltagepply voltage Us .............................................................................................................. AC 100…240 V/DC 24…240 Vlerance of Us ................................................................................................................................................. -30…+15 %
Internal resistance Ri, Zi ...........................Permissible system leakage capacitance Permissible extraneous DC voltage Ufg ...
Response valuesResponse value Ran1 ................................Response value Ran2 ................................Relative uncertainty Ran...........................Hysteresis Ran ..........................................Undervoltage detection U< ....................Overvoltage detection U>.......................Relative uncertainty U..............................Relative uncertainty depending on the frHysteresis U ..............................................
Time responseResponse time tan of RF = 0,5 x Ran and Start-up delay t .......................................Response delay ton ..................................Delay on release toff ................................
Displays, memoryDisplay......................................................Display range measured value insulationOperating uncertainty...............................Display range measured value nominal sOperating uncertainty...............................Display range measured value system leaOperating uncertainty of RF ≥ 20 kΩ andPassword ................................................Fault memory alarm messages ................
Interface
T
isoGEN423_D00221_01_M_XXEN/06.20182
SSwOpElCoUtRaRaM
EEMAmOpTrStClStTrLoClStTrLo
CCoNoCoStrigflexible without ferrules ................................................................................................................................ 0.75…2.5 mm2
fleMOpTe
OOpMDe
0529) ............................................................................................................. IP20......................................................................................................... polycarbonate................................................................................................................. IEC 60715.................................................................................... 2 x M4 with mounting clip.................................................................................................................. ≤ 150 g
rovals and certificationsveloped in compliance with the following
13-8): 2015-12/Ber1: 2016-12
: 2016
ified standards take into account the edition valid until dicated.
ationVersion Art. No.
erminal B71036325
B98060008
9
xible with ferrules with/without plastic sleeve ....................................................................................... 0.25…2.5 mm2
ulti-conductor flexible with TWIN ferrules with plastic sleeve ...................................................................0.5…1.5 mm2
ening force ................................................................................................................................................................... 50 Nst opening, diameter .............................................................................................................................................. 2.1 mm
thererating mode .................................................................................................................................... continuous operation
ounting ............................................................................................................. cooling slots must be ventilated verticallygree of protection, built-in components (DIN EN 60529) .......................................................................................... IP30
Technical dataechnical data
witching elementsitching elements ...................................................................................................... 2 x 1 contacts, common terminal 11erating principle ..................................................................................... N/C operation/N/O operation (N/O operation)*
ectrical endurance, number of cycles ........................................................................................................................ 10 000ntact data acc. to IEC 60947-5-1:ilisation category..................................................................................... AC-12 ..... AC-14 .....DC-12 ..... DC-12 ......DC-12ted operational voltage .......................................................................... 230 V ......230 V ........24 V ...... 110 V .......220 Vted operational current ............................................................................... 5 A .......... 2 A ..........1 A ....... 0.2 A ........0,1 Ainimum contact rating ..................................................................................................................... 1 mA at AC/DC ≥ 10 V
nvironment/EMCC .................................................................................................................................................................. IEC 61326-2-4bient temperatures:
eration ........................................................................................................................................................ -40…+70 ºCansport .......................................................................................................................................................... -40…+85 ºCorage ............................................................................................................................................................. -40…+70 ºCimatic class acc. to IEC 60721:ationary use (IEC 60721-3-3) .............................................................. 3K7 (without condensation and formation of ice)ansport (IEC 60721-3-2) ..................................................................... 2K4 (without condensation and formation of ice)ng-time storage (IEC 60721-3-1) ...................................................... 1K5 (without condensation and formation of ice)assification of mechanical conditions acc. to IEC 60721:ationary use (IEC 60721-3-3) ....................................................................................................................................... 3M4ansport (IEC 60721-3-2) ............................................................................................................................................... 2M2ng-term storage (IEC 60721-3-1) ............................................................................................................................... 1M3
onnectionnnection type......................................................................................................................................... push-wire terminalminal current............................................................................................................................................................. ≤ 10 Anductor sizes......................................................................................................................................................AWG 24 -14ripping length............................................................................................................................................................. 10 mmid...................................................................................................................................................................0.2…2.5 mm2
Degree of protection, terminals (DIN EN 6Enclosure material ...................................DIN rail mounting acc. to ........................Screw fixing ..............................................Weight ......................................................
10.2 Standards, appThe ISOMETER® has been destandards:
• DIN EN 61557-8 (VDE 04
• IEC 61557-8: 2014/COR1
Subject to change! The spec06.2018 unless otherwise in
10.3 Ordering informType
isoGEN423-D4-4 Push-wire tMounting clip for screw fixing(1 piece / device)
isoGEN423_D00221_01_M_XXDE/06.2018
I
CCC
C
DD
DDD
EE
FFFF
H
nce 9ge 9
n 29
11
ent 17ng 16
30
History memory 11How to use this manual 5
IInstallation and connection 12Interface/protocols
BMS 11IsoData 11
SSafety instructions 7Self test 9
Automatic 10Manual 10
Service 5
NDEX
ommissioning 14onfiguration
Fault memory 17Function 18Interface 17Relay operating mode 17Time 17
onnection 12
ata accessBMS 19
elay on release 10evice features 8isplay elements in use 15
rror codes 9
actory setting 11ault memory 11unctional description 8
Modbus RTU 11IsoData
Data string 27
MMalfunction 10Measuring times 10Menu
„AL“ 16„SEt“ 18„t“ 17Overview 16
MonitoringInsulation resistaUnder-/overvolta
OOperation 15Ordering informatio
PPassword protection
RRelay alarm assignmResponse value setti
isoGEN423_D00221_01_M_XXDE/06.201831
SignaStandStartSupp
TTechTrain
WWirinWorkWork
lling assignment alarm relays K1/K2 10ards 29
-up delay 10ort 5
nical data 28ing courses 6
g diagram 13 activities on electrical installations 7shops 6
Fotos: Bender Archiv.
Customer serviceService hotline: 0700-BenderHelp (Telephone and Fax)Carl-Benz-Straße 8 • 35305 Grünberg • Germany
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