Presentation, description Zelio Control - electrocentr · 2 Presentation RM22 multifunction Zelio control relays monitor the following functions on 3-phase supplies: Functions RM22TA

2

PresentationRM22 multifunction Zelio control relays monitor the following functions on 3-phase supplies:Functions RM22TA RM22TU RM22TR RM22TG

Sequence of phases L1, L2, and L3Phase failure with regenerationAsymmetryUndervoltageOvervoltage and undervoltage

Function performedFunction not performed

Depending on the model RM22T control relays: b Accept different nominal 3-phase voltages: up to 480 V ab Monitor their own power supply measured as a true rms valueb Are designed for clip-on mounting on DIN rail

They feature:b Sealable cover to protect the settingsb Diagnostic button for load circuit testingb Relay output status LEDb Fault detection indication LED b Dial pointer LED indicator for relay power ON statusb Relay output On-delay or Off-delay

Applicationsb Control for connection of moving equipment (site equipment, agricultural equipment, refrigerated trucks)b Control for protection of persons and equipment against the consequences of reverse running (lifting, handling, elevators, escalators, etc.)b Control of sensitive 3-phase suppliesb Protection against the risk of a driving load (phase failure)b Normal/emergency power supply switching

DescriptionRM22TA, RM22TU, RM22TR, RM22TG

1a Voltage range selector switch1b Voltage range/On-Off delay selector2 Time delay adjustment potentiometer Tt3a Asymmetry threshold setting potentiometer Asym3b Undervoltage setting potentiometer <U3c Overvoltage setting potentiometer >U4 Diagnostic button

Operating principleMultifunction 3-phase supply control relays monitor:

b Own power supply b Correct sequencing of phases L1, L2, and L3 b Fault signaling by LED b Phase failure, including in the case of voltage regeneration b Undervoltage from - 2…- 20 % of the supply voltage Un b Overvoltage from 2…20 % of the supply voltage Un b Asymmetry from 5…15 % of the supply voltage Un

Voltage switch operation: v Set the switch to 3-phase supply voltage Un. v The position of this switch is taken into account on energization of the device. v If the switch position is changed while the device is operating, all the LEDs flash

but the product continues to operate normally with the voltage selected at the time of energization preceding the change of position.

v If the switch is returned to the original position selected prior to the last energization, the LEDs return to their normal state.

Presentation, description and operation

Zelio Control - Monitoring and control relaysMultifunction 3-phase control relays RM22TA, RM22TU, RM22TR, and RM22TG

RM22T

L1 L2

12 11 14

22 21 24

R

RM22TA31

DIAGNOSTIC

Def

200208

220

240

8

5

10 12

15%

Asym

L3

Tt

0,1 30s

5

10 20

25

1a23a

4

RM22TA

L1 L2 L3

12 11 14

22 21 24

R

RM22TU23

DIAGNOSTIC

Def

380400 415

440

480

-2

-4-6

-8 -14-16-18

-20%

U

RM22TR31

DIAGNOSTIC

-2

-4-6

-8 -14-16 -18

-20%

<U

Def

240220

208200

240220

208200

Tt

ON

DEL

AY

OFF

DEL

AY

0,1 30s

5

10 20

25

1b

3c3b4

RM22TR

Un Green LED: indicates that supply to the relay is onR Yellow LED: indicates relay output stateDEF Yellow LED: indicates fault detection

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28614-ENversion: 2.0

2.0

3

Operation (continued)

Operating principle (continued)RM22TAPhase + Asymmetry v Sequence of phases L1, L2, L3 v Phase failure v Asymmetry Asym

L2

L3

0 %

Tt TtR/R1/R2

Phase L3

Phase L2

Phase L1

HysteresisAsymmetry

Relay Outputs

The relay monitors its own supply voltage Un: v correct sequence of three phases v failure of at least one of the three phases (U measured < 0.7 x Un) v asymmetry adjustable from 5…15 % of Un b If a sequencing or phase failure fault is detected, the relay opens

instantly. b If an asymmetry fault is detected, the relay opens at the end of the time

delay set by the user. b On energization of the device with a detected measured fault, the relay

stays open.

Note: Tt: time delay after crossing of threshold (adjustable on front panel)

RM22TUPhase + Undervoltage

v Sequence of phases L1, L2, L3v Phase failure

30 % Un 30 % Un30 % Un

L3

L2

R/R1/R2

Phase L3

Phase L2

Phase L1

Relay Outputs

The relay monitors its own supply voltage Un: v correct sequence of the three phases v failure of at least one of the three phases (U measured < 0.7 x Un) v undervoltage adjustable from - 2…- 20 % of Un b If a sequencing or phase failure fault is detected, the relay opens

instantly. b If a voltage fault is detected, the relay opens instantly. b On energization of the device with a detected measured fault, the relay

stays open.

Note: Tt: time delay after crossing of threshold

v Undervoltage control <U

R/R1/R2

L1/L2/L3

L1L2L3

L2L3

L1

Tt Tt

<UThresholdHysteresis

Relays Output

Phases

Zelio Control - Monitoring and control relaysMultifunction 3-phase control relaysRM22TA, RM22TU, RM22TR, and RM22TG

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Operation (continued) Zelio Control - Monitoring and control relaysMultifunction 3-phase control relaysRM22TA, RM22TU, RM22TR, and RM22TG

Operating principle (continued)RM22TRPhase + Undervoltage/overvoltage

v Phase failure30 % Un 30 % Un30 % Un

R/R1/R2

Phase L3

Phase L2

Phase L1

Relay Outputs

The relay monitors its own supply voltage Un: v phase failure v undervoltage and overvoltage b An adjustable time delay, on crossing the thresholds, provides immunity

to transients, and prevents spurious triggering of the output relay. b If a voltage fault is detected, the relay opens at the end of the time delay

set On-delay or Off-delay by the user. b On energization of the device with a detected measured fault, the relay

stays open. b In the event of phase failure, the relay opens instantly.

Note: Tt: time delay after crossing of threshold (adjustable on front panel)

v Overvoltage and undervoltage (Off-delay)

UL1L2

L3

Tt TtR/R1/R2

Phases L1/L2/L3

RelayOutputs

Hysteresis

Hysteresis

RM22TGPhase control v Sequence of phases L1, L2, L3 v Phase failure

100 %

0 %

100 %

0 %

100 %

0 %

Tr Tr Tr Tr

L3

L2

R/R1/R2

Phase L1

Phase L2

Phase L3

RelayOutputs

The RM22TG relay monitors: v correct sequencing of the three phases v total loss of one or more of the phases b When phase sequence and voltages are correct (> 183 V a), the output

relays are closed and the yellow LED is on. b When there is a sequencing fault or total loss of one or more phases

(detected as soon as one of the voltages drops below 100 V) the relay opens instantly and the LED goes off.

b On energization of the device with a detected measured fault, the relay stays open.

Note: Tr: response time on appearance of a fault

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References

ReferencesFunction Rated

3-phase supply voltage

Measurement range

Time delay Output Reference Weight

V V kg/lbb Phase

sequenceb Phase failureb Asymmetry

200…240 a 200…240 a Off delay (0.1...30 s)

2 C/O 8 A

RM22TA31 0.090/ 0.198

380…480 a 380…480 a Off delay (0.1...30 s)

2 C/O 8 A

RM22TA33 0.090/ 0.198

b Phase sequence

b Phase failureb Undervoltage

and overvoltage

200…240 a 200…240 a On/Off delay (0.1...30 s)

2 C/O 8 A

RM22TR31 0.090/ 0.198

380…480 a 380…480 a On/Off delay (0.1...30 s)

2 C/O 8 A

RM22TR33 0.090/ 0.198

b Phase sequence

b Phase failureb Undervoltage

200…240 a 200…240 a No 2 C/O 8 A

RM22TU21 0.090/ 0.198

380…480 a 380…480 a No 2 C/O 8 A

RM22TU23 0.090/ 0.198

b Phase sequence

b Phase failure

208…480 a 183…528 a No 2 C/O 8 A

RM22TG20 0.090/ 0.198

Zelio Control - Monitoring and control relaysMultifunction 3-phase control relaysRM22TA, RM22TU, RM22TR, and RM22TG

RM22TG20

RM22TA31 RM22TR31

RM22TU21

PF1

4340

0P

F143

402

PF1

4340

3P

F143

405

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PresentationRM22UA and RM22UB 1-phase or DC voltage control relays monitor the following functions:Functions RM22 UA2MR UA3MR UA33MT UB34

Overvoltage (without memory)Undervoltage (with/without memory)Overvoltage (with/without memory)Overvoltage or undervoltage (windows mode)


RM22 control relays enable: b Automatic AC or DC recognitionb Selection between overvoltage and undervoltageb Monitoring their own supply voltage measured as true rms valueb Selectable memory function

They feature:b Dial pointer LED indicator for relay power ON statusb Relay output status LED

The settings are protected by a sealable cover and the control status is indicated by an LED. The relays are designed for clip-on mounting on a DIN rail.

Applicationsb Protection of electronic or electromechanical devices against overvoltage and undervoltageb Normal/emergency power supply switchingb DC motor overspeed controlb Monitoring of AC or DC suppliesb Battery and speed monitoring (with tacho-generator) DescriptionRM22UA2MR, RM22UA3MR, RM22UA33MT, RM22UB34

1 Configuration: selection of operating mode U (overvoltage), >U> (overvoltage and undervoltage), MEMORY - NO MEMORY (with or without memory)

2a Voltage threshold setting potentiometer U value2b Undervoltage setting potentiometer <U2c Overvoltage setting potentiometer >U3 Time delay adjustment potentiometer Tt4a Hysteresis adjustment potentiometer Hys4b Hysteresis/overvoltage and undervoltage window mode adjustment

potentiometer Hys/>U>5 Diagnostic button6 Configuration: selection of On-delay or Off-delay

Presentation, description

Zelio Control - Monitoring and control relays1-phase or DC voltage control relays RM22UA and RM22UB

RM22UA31MRRM22UA21MR

A1 A2 M

12 11 14

22 21 24

R

Hys

RM22UA23MR

DIAGNOSTIC

E1 E2 E3

>UValue

5

1015

20 3540 45

50%

10

2030

40 7080 90

100% 2c4a

5

RM22UA2pMR

A1 A2 M

12 11 14

E1 E2 E3

22 21 24

U

>

MEM

OR

Y

NO

>

MEM

OR

Y

R

UValue

Hys/>U>

Tt

U >

>

> U

RM22UA31MR

U

U



MEM

OR

Y

NO

>

MEM

OR

Y

10

2030

40 708090

100%

5

1015

20 354045

50%

UValue

Hys/>U>

Tt

U >

>

> U

U U<

0,1 30s

5

10 20

25

12a4b35

RM22UA33MT

R Yellow LED: indicates relay output state

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Operation

Operating principle1-phase or DC voltage control relays monitor:

b the voltage of 1-phase and DC supplies b their own supply voltage for the RM22UB model

An adjustable time delay, on crossing the thresholds, provides immunity to transients, and prevents spurious triggering of the output relay.

RM22 UA2MR/UA3MR/UA33MTThe operating mode is fixed by the user:

b Undervoltage with or without memory b Overvoltage with or without memory

The position of the configuration switch and the operating mode is read by the product on energization: b If the configuration switch is set to an unacceptable position, the product detects a fault, the output relay stays open, and the LEDs flash to

indicate the position error. b If the configuration switch position is changed while the device is operating, all the LEDs flash, but the product continues to operate

normally with the function selected at the time of energization before position change. b If the configuration switch is returned to the original position selected prior to the last energization, the LEDs return to their normal state.

The undervoltage or overvoltage threshold value is set by means of a potentiometer graduated as a percentage of the scale value of U to be monitored. The hysteresis is adjusted by means of a potentiometer graduated from 5…50 % of the threshold setting. The hysteresis value must not exceed the limit values of the measuring range.

Overvoltage without memory b Overvoltage control > U, without memory

>U

Tt

UR/R1/R2Relay

Outputs

Hysteresis

Supply Un

Threshold

If the voltage controlled exceeds the threshold setting for a time greater than that set on the front panel (0.1…30 s), the output relay opens and LED R goes off. During the time delay, this LED flashes.As soon as the voltage drops below the value of the threshold setting minus the hysteresis, the relay instantly closes.

Undervoltage without memory b Undervoltage control < U, without memory

U

<U

TtR/R1/R2Relay

Outputs

Hysteresis

Supply Un

Threshold

If the voltage controlled falls below the threshold setting for a time greater than that set on the front panel (0.1…30 s), the output relay opens and LED R goes off. During the time delay, this LED flashes.As soon as the voltage rises above the value of the threshold setting plus thehysteresis, the relay instantly closes.


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Operation (continued) Zelio Control - Monitoring and control relays1-phase or DC voltage control relays RM22UA and RM22UB

Operating principle (continued)RM22 UA2MR/ UA3MR/UA33MT (continued)Overvoltage/undervoltage with memory v Overvoltage control > U, with memory

>U

U

TtR/R1/R2Relay

Outputs

Hysteresis

Supply Un

Threshold

If “Memory” mode is selected, the relay opens when crossing of the threshold is detected and then stays in that position. The power must be switched off to reset the product

Tt: time delay after crossing of threshold

v Undervoltage control < U, with memory

U

Tt

<U

R/R1/R2RelayOutputs

Hysteresis

Supply Un

Threshold

RM22 UA3MR/UA33MT/UB34Overvoltage + undervoltage control relay in window mode b Overvoltage and undervoltage control

in window mode <U<

Tt Tt

U

>U

<U

R/R1/R2RelayOuputs

Hysteresis

Supply Un

ThresholdHysteresis

Threshold

These relays operate in window mode where they check that the voltage con-trolled stays between a minimum and a maximum threshold.

b The undervoltage or overvoltage threshold values are set by means of two graduated potentiometers clearly indicating the Un to be monitored. The hysteresis is fixed at 5 % of the threshold setting.

b If the voltage controlled exceeds the high threshold setting or falls below the low threshold setting for a time greater than that set time on the front panel (0.1…30 s), the output relay opens and LED R goes off. During the time delay, this LED flashes.

b As soon as the voltage falls below the high threshold setting value minus the hysteresis, or rises above the low threshold setting value plus the hysteresis, the relay instantly closes.


Tt: time delay after crossing of threshold

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References

ReferencesFunction Rated supply

voltageMeasurement range

Time delay Output Reference Weight

V V kg/lbb Overvoltage

without memory24…240 z 0.05…5 z No 2 C/O 8 A RM22UA21MR 0.110/

0.242

24…240 z 1…100 z No 2 C/O 8 A RM22UA22MR 0.110/ 0.242

24…240 z 15…500 z No 2 C/O 8 A RM22UA23MR 0.110/ 0.242

b Overvoltage and undervoltage with/without memory

b Overvoltage and undervoltage with memory window

24…240 z 0.05…5 z Off delay (0.1...30 s)

2 C/O 8 A RM22UA31MR 0.110/ 0.242

24…240 z 1…100 z Off delay (0.1...30 s)

2 C/O 8 A RM22UA32MR 0.110/ 0.242

24…240 z 15…500 z Off delay (0.1...30 s)

2 C/O 8 A RM22UA33MR 0.110/ 0.242

380…415 a 15…500 a Off delay (0.1...30 s)

2 C/O 8 A RM22UA33MT 0.110/ 0.242

b Overvoltage and undervoltage without memory

110…240 z 80…300 z On/Off delay (0.1...30 s)

2 C/O 8 A RM22UB34 0.090/ 0.198


RM22UA33MT

RM22UA23MR RM22UA33MR

RM22UB34

PF1

4340

9P

F143

413

PF1

4341

2P

F143

414

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PresentationRM22JA and RM35JA multifunction current control relays monitor the following functions:

Functions RM22JA21MR RM22JA31MR RM35JA 32MR/32MTOvercurrent (without memory)Overcurrent (with/without memory)Undercurrent (with/without memory)Overcurrent and undercurrent (with/without memory) (window mode)


These control relays enable: b Automatic AC or DC recognitionb Selection between overcurrent and undercurrentb Measurement as true rms valueb Selectable memory function

They feature:b Dial pointer LED indicator for relay power ON statusb Relay output status LED

The settings are protected by a sealable cover and the control status is indicated by an LED. The relays are designed for clip-on mounting on DIN rail.

Applicationsb Excitation control of DC machinesb Load state control of motors and generatorsb Control of current drawn by a 3-phase motorb Monitoring of heating or lighting circuitsb Control of pump draining (undercurrent)b Control of overtorque (crushers)b Monitoring of electromagnetic brakes or clutches DescriptionRM22JA21MR, RM22JA31MR, RM35JA32MR, RM35JA32MT

1 Configuration: selection of operating mode I (overcurrent), >I> (overcurrent and undercurrent), MEMORY - NO MEMORY (with or without memory)

2 Current threshold setting potentiometer I %3a Hysteresis adjustment potentiometer Hys3b Hysteresis/overcurrent and undercurrent window mode adjustment

potentiometer Hys/>I>4 Time delay adjustment potentiometer Tt5 Diagnostic button6 Overcurrent setting potentiometer >I


Zelio Control - Monitoring and control relaysCurrent control relays RM22JA and RM35JA

RM35JA32MTRM22JA21MR

A1 A2 M

12 11 14

22 21 24

5

1015

20 3540 45

50%

R

Hys

RM22JA21MR

DIAGNOSTIC

10

20

3040 70

80

90

100%

E1 E2 E3

% I I I>

3a6

RM22JA21MR

MEM

OR

Y

NO

MEM

OR

Y

10

2030

40 708090

100%

5

1015

20 354045

50%

0,1 30s

5

10 20

25

A1 A2 M

12 11 14

E1 E2 E3

22 21 24

> >

R

Hys/

Tt

>

>

>

RM22JA31MR

<><

DIAGNOSTIC

% I I I

I I I> >

I I

I

I I

I

I I

I

I I

I

I I

I

I I

I

3b21

45

RM22JA31MR

A1 A2 E3 E2 E1 M

12 11 14 22 21 24

RM35JA32MR

R

DIAGNOSTIC

<

>

> >MEMORY

> >

>

<

Hys/

Tt

100%10

20

30

40 70

80

90

50%5

10

15

20 35

40

45

30s0,1

5

10 20

25

% I I I

I I I> >

I I I

I I I

I I

I

I I

I

I I

I I I

I

YES NO

3b21

45

RM35JA32MR

<

>

> >MEMORY

> >

>

<

Hys/

Tt

100%10

20

30

40 70

80

90

50%5

10

15

20 35

40

45

30s0,1

5

10 20

25

A1 A2 E3 E2 E1 M

12 11 14 22 21 24

RM35JA32MT

R

DIAGNOSTIC

% I I I

I I I> >

I I I

I I I

I I

I

I I

I

I I

I I I

I

YES NO

3b21

45

RM35JA32MT


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Operation

Operating principleCurrent control relays monitor the current of 1-phase and DC supplies

An adjustable time delay, on crossing the thresholds, provides immunity totransients, so preventing spurious triggering of the output relay.

RM22JA1MR/RM35JA32MThe operating mode is fixed by the user:

b Undercurrent with or without memory b Overcurrent with or without memory

The position of the configuration switch and the operating mode is read by the product on energization: b If the configuration switch is set to an unacceptable position, the product detects a fault, the output relay stays open and the LEDs flash to

indicate the position error. b If the configuration switch position is changed while the device is operating, all the LEDs flash, but the product continues to operate normally

with the function selected at the time of energization before position change. b If the configuration switch is returned to the original position selected prior to the last energization, the LEDs return to their normal state.

The undercurrent or overcurrent threshold value is set by means of a potentiometer graduated as a percentage of the scale value of I to be monitored. The hysteresis is adjusted by means of a potentiometer graduated from 5…50 % of the threshold setting. The hysteresis value must not exceed the limit values of the measuring range.

Overcurrent without memory

v Overcurrent detection >I , without memory

R/R1/R2

Tt Tt TiTi

I

>I

RelayOutputs

Hysteresis

Supply Un

Threshold

If the current controlled exceeds the threshold setting for a time greater than that set on the front panel (0.1…30 s), the output relay opens and LED R goes off. During the time delay, this LED flashes.As soon as the current drops below the value of the threshold setting minus the hysteresis, the relay instantly closes.

Undercurrent without memory

v Undercurrent detection <I, without memory

R/R1/R2

TiTt Tt Ti

I<I

RelayOutputs

Hysteresis

Supply Un

Threshold

If the current controlled falls below the threshold setting for a time greater than that set on the front panel (0.1…30 s), the output relay opens and LED R goes off. During the time delay, this LED flashes.As soon as the voltage rises above the value of the threshold setting plus the hysteresis, the relay instantly closes.

Note: Tt: time delay after crossing of threshold Ti: starting inhibit time

Ti is not used for this model


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Operation (continued) Zelio Control - Monitoring and control relaysCurrent control relays RM22JA and RM35JA

Operating principle (continued)RM22JA1MR/RM35JA32M (continued)Overcurrent/Undercurrent with memory

v Overcurrent >I, with memory

R/R1/R2

Ti Tt Ti

I>I

TtRelayOutputs

Hysteresis

Supply Un

Threshold

v Undercurrent <I, with memory

If “Memory” mode is selected, the relay opens when crossing of the threshold is detected and then stays in that position. The power must be switched off to reset the product.

R/R1/R2

Ti Ti

I<I

Tt Tt

RelayOutputs

Hysteresis

Supply Un

Threshold

Note: Tt: time delay after crossing of threshold Ti: starting inhibit time

Ti is not used for this model.

RM22JA1MR/RM35JA32MOvercurrent and undercurrent control in window mode v Overcurrent and undercurrent control in

window mode <I<, without memory

Supply Un

ThresholdHysteresis

HysteresisThreshold

>I

<I

Relay Outputs Tt

<TtU<Tt

TtR/R1/R2

These relays operate in window mode where they check that the current con-trolled stays between a minimum and a maximum threshold.

b The undercurrent or overcurrent threshold values are set by means of two graduated potentiometers clearly indicating the I to be monitored. The hysteresis is fixed at 5 % of the threshold setting.

b If the current controlled exceeds the high threshold setting or falls below the low threshold setting for a time greater than that set time on the front panel (0.1…30 s), the output relay opens and LED R goes off. During the time delay, this LED flashes.

b As soon as the current falls below the high threshold setting value minus the hysteresis, or rises above the low threshold setting value plus the hysteresis, the relay instantly closes.


Note :Tt: time delay after crossing of threshold

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References



Time delay

Output Reference Weight

V mA kg/lbb Overcurrent

without memory24…240 z 4…1000 z No 2 C/O 8 A RM22JA21MR 0.110/

0.242

b Overcurrent with/without memory

b Undercurrent with/without memory

b Overcurrent and undercurrent (windows mode) with/without memory

24…240 z 4…1000 z Off delay (0.1...30 s)

2 C/O 8 A RM22JA31MR 0.110/ 0.242

24…240 z 1500…15000 z Off delay (0.1...30 s)

2 C/O 8 A RM35JA32MR 0.120/ 0.264

380…415 a 1500…15000 a Off delay (0.1...30 s)

2 C/O 8 A RM35JA32MT 0.120/ 0.264


RM35JA32MR

RM22JA21MR RM22JA31MR

RM35JA32MT

PF1

4341

5

PF1

4341

6P

F143

418

PF1

4341

7

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PresentationRM22LA and RM22LG liquid level control relays control one or two liquid levels, with a fill or empty function: Functions RM22LA 32MR/32MT RM22LG 11MR/11MT

Level 1/Level 2Fill operationEmpty operationLow sensitivityStandard sensitivityHigh sensitivity


RM22 liquid level control relays feature:b A dial pointer LED indicator for relay power ON statusb A relay output status LED

The settings are protected by a sealable cover and the control status is indicated by an LED. The relays are designed for clip-on mounting on a DIN rail.

ApplicationsThese devices monitor the levels of conductive liquids.They control the actuation of pumps or valves to regulate levels and are alsosuitable for protecting submersible pumps against dry running, or protecting tanksfrom “overflow”. They can also be used to control dosing of liquids in mixingprocesses and to protect heating elements in the event of non-immersion.They have a transparent, hinged cover on their front panel to avoid any accidentalalteration of the settings. This cover can be directly sealed.

b Application examples for compatible liquids:v spring, town, industrial, and sea waterv metallic salt, acid, or base solutionsv liquid fertilizersv non-concentrated alcohol (< 40 %)v liquids in the food-processing industry: milk, beer, coffee, etc. DescriptionRM22LG11MR, RM22LG11MT, RM22LA32MR, RM22LA32MT

1 Configuration: selection of the operating mode (Fill or Empty) and the sensitivity range (LS/St/HS)

2 Sensitivity control potentiometer (kΩ or %)3 Configuration: selection of the number of levels and theOn/Off time delay4 Time delay control potentiometer Tt5 Diagnostic button


Zelio Control - Monitoring and control relaysLiquid level control relays RM22LA and RM22LG

RM22LA32MTRM22LG11MR

A1 A2 NC

12 11 14

22 21 24

R

Sens

Level

Tt

RM22LA32MR

DIAGNOSTIC

Min Max C

St. St. HS

LS

LS

HS

1

2

1

2

102030 70

80

100%590

40 60

ON

D

ELAY

OFF

DEL

AY

0,1 30s

5

10 20

25

321

45

RM22LA32MR

A1 A2 NC

12 11 14

102030 70

80

100

R

Sens

Level

RM22LG11MR

DIAGNOSTIC

590

Min Max C

40 60

1 2

KΩ

321

5

RM22LG11MR

A1 A2 NC

12 11 14

22 21 24

RM22LA32MT

DIAGNOSTIC

Min Max C

Sens

Level

Tt

St. St. HS

LS

LS

HS

1

2

1

2

102030 70

80

100%590

40 60

ON

D

ELAY

OFF

DEL

AY

0,1 30s

5

10 20

25

R

321

45

RM22LA32MT

A1 A2 NC

12 11 14

R

Sens

Level

RM22LG11MT

DIAGNOSTIC

Min Max C

102030 70

80

100590

40 60

1 2

KΩ

321

5

RM22LG11MT


2.0

Operation

Operating principleLiquid level control relays are designed to measure and control the levels of conductive liquids by means of resistive probes.The operating principle is based on measurement of the apparent resistance of the liquid between two submerged probes. When this value is less than the threshold setting on the front panel of the device, the relay changes state. To avoid electrolytic phenomena, an AC current runs across the probes. A selector switch on the front panel allows selection of the required function and the sensitivity range. Control of a single level can be achieved by using the second selector switch. In this case, the Max. level probe stays up in the air and an adjustable time delay avoids any wave effect. Both products activate their output relay when a tank is either emptying or filling.

RM22LA and RM22LGA selector switch on the front panel of these relays allows selection of the required sensitivity range and the empty or fill function. A second switch allows selection of the number of levels (1 or 2) and the type of time delay in the case of level 1 mode. The position of these configu-ration switches is taken into account on energization.b If the configuration switch is set to an unacceptable position, the product detects a fault, the output relay stays open, and the LEDs flash to signal the position error. b If the configuration switch position is changed while the device is operating, all the LEDs flash, but the product continues to operate normally with the function selected at the time of energization preceding the change of position.b If the configuration switch is returned to the original position selected prior to the last energization, the LEDs return to their normal state.

Control of two levels, empty and fill function v Fill/Empty function (2 levels)

R/R1/R2

R/R1/R2

Supply Un

Relay Outputs

Relay Outputs

Max. level

Min. level

b Empty functionlevel: 2, function:

- LS (Low Sensitivity: 250 W…5 kW) - St (Standard Sensitivity: 5 kW…100 kW) - HS (High Sensitivity: 50 kW…1 MW)

The output relay stays open until the liquid reaches the Max. level probe. As soon as the Max. level is reached, the contact closes and then allows emptying of the tank (valve opens, pump starts, ...). When the level drops below the Min. level, the contact opens to stop the emptying process.

b Fill functionlevel: 2, function:

- LS (Low Sensitivity: 250 W…5 kW) - St (Standard Sensitivity: 5 kW…100 kW) - HS (High Sensitivity: 50 kW…1 MW)

The output relay stays energized until the liquid reaches the Max. level probe. As soon as the Max. level is reached, the contact opens and the pump stops. When the level drops below the Min. level, the contact closes again and pumping re-starts to raise the level.


4

Operation (continued) Zelio Control - Monitoring and control relaysLiquid level control relays RM22LA and RM22LG

Operating principle (continued)RM22LA and RM22LG (continued) Control of one level, empty function v Empty function T on

Tt Tt TtR/R1/R2

Supply Un

Relay Outputs

Level

b level: 1 - on delay functions: - LS (Low Sensitivity: 250 W…5 kW) - St (Standard Sensitivity: 5 kW…100 kW) - HS (High Sensitivity: 50 kW…1 MW)

When the liquid level rises above the probe for a time greater than the time delay value Tt set on the front panel, the relay is energized and stays energized until the liquid level drops back to the probe. If the liquid drops back below the set level before the end of the time delay, the relay does not energize.

v Empty function T off

Tt Tt TtR/R1/R2

Supply Un

Relay Outputs

Level

b level: 1 - off delay functions: - LS (Low Sensitivity: 250 W…5 kW) - St (Standard Sensitivity: 5 kW…100 kW) - HS (High Sensitivity: 50 kW…1 MW)

When the liquid level rises above the probe, the relay instantly energizes and stays energized until the liquid again reaches the probe level for a time Tt set on the front panel. If the liquid drops back below the set level before the end of the time delay period, the relay stays energized.

Control of one level, fill function v Fill function T on

Tt Tt TtR/R1/R2

Supply Un

Relay Outputs

Level

b level: 1 - on delay functions: - LS (Low Sensitivity: 250 W…5 kW) - St (Standard Sensitivity: 5 kW…100 kW) - HS (High Sensitivity: 50 kW…1 MW)

When the liquid level drops below the probe for a time greater than the time delay value Tt set on the front panel, the relay is energized and stays energized until the liquid level rises back up to the probe. If the liquid rises back above the set level before the end of the time delay period, the relay does not energize.

v Fill function T off

Tt Tt TtR/R1/R2

Supply Un

Relay Outputs

Level

b level: 1 - off delay functions: - LS (Low Sensitivity: 250 W…5 kW) - St (Standard Sensitivity: 5 kW…100 kW) - HS (High Sensitivity: 50 kW…1 MW)

When the liquid level drops below the probe, the relay instantly energizes and stays energized until the liquid level again reaches the probe level and stays above it for a time greater than the time delay period Tt set on the front panel. If the liquid drops back below the set level before the end of the time delay period, the relay stays energized.

Note: Tt: time delay after crossing of threshold

2

1

3

4

5

6

7

8

9

10

2

1

3

4

5

6

7

8

9

10


5

Operation (continued),references




Time delay

Output Reference Weight

V Ω kg/lbb Level 1/

Level 2b Fill

operationb Empty

operation

24…240 z 5 K…100 K No 1 C/O 8 A RM22LG11MR 0.100/ 0.220

380…415 a 5 K…100 K No 1 C/O 8 A RM22LG11MT 0.100/ 0.220

24…240 z 250...1 M On/Off delay (0.1...30 s)

2 C/O 8 A RM22LA32MR 0.110/ 0.242

380…415 a 250...1 M On/Off delay (0.1...30 s)

2 C/O 8 A RM22LA32MT 0.110/ 0.242

RM22LA32MR

RM22LG11MR RM22LG11MT

RM22LA32MT

PF1

4341

9P

F143

421

PF1

4342

0P

F143

422

2

1

3

4

5

6

7

8

9

10

2

1

3

4

5

6

7

8

9

10


2

References

ProbesApplication No.

of probes

Length Opera-ting temper-ature

Maximum pressure

Reference Weight

mm °C kg/cm2 kg/lbRecommended for drinks vending machines and where installation space is limited (Stainless steel)

3 1000 80 2 RM79696044 0.800/ 1.764

Suitable for boilers, pressure vessels and under high temperature conditions (1)(304 stainless steel)

1 1000 200 25 RM79696014 0.360/ 0.794

Description Material Reference Weightkg/lb

Protected probe for mounting by suspension

Protective shell PUC (S7) Electrode : stainless steel

RM79696043 0.150/ 0.331

Description Type of installation

Maximum operating temperature

Reference Weight

°C kg/lbLiquid level control probe

Suspended by cable

100 LA9RM201 0.100/0.220

(1) 3/8” BSP mounting thread with hexagonal head. Use a 24 mm spanner for tightening.

RM79696043

5610

34

LA9RM201

Zelio Control – Monitoring & Control RelaysProbes, Electrode holders

4.0


1

2

3

4

5

6

7

8

9

10

3

Electrode holdersDescription Material Reference Weight

kg/lbElectrode for use up to 350 °C and 15 kg/cm2 (1)

Stainless steel isolated by ceramic

RM79696006 0.150/ 0.331

(1) 3/8” BSP mounting thread.

RM79696006

5610

35

5610

36

Zelio Control – Monitoring & Control RelaysProbes, Electrode holders

References


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3

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Documents

Presentation, description Zelio Control - electrocentr · 2 Presentation RM22 multifunction Zelio control relays monitor the following functions on 3-phase supplies: Functions RM22TA