Manual EKC 201 Inglese

8/13/2019 Manual EKC 201 Inglese

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RS.8A.J1.02 RS.8A.J2.02 6-2000

Controller for

temperature controlEKC 201 with double thermostat

ADAP-KOOL

Manual


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EKC 201 Manual RS.8A.J2.02 Danfoss 6-2000 3

Function

The thermostat

The two temperatures Sinand S

outhave their own thermostat

function with belonging differential. Not until both thermostatscall for cold temperatures will refrigeration be started.The setting of the two thermostats is based on the followingprinciple:- The S

inthermostat is set so low that it will always call for

refrigeration when the night lid is off- S

outis set, so that it will be the controlling thermostat

- When the night lid is put on, the Sintemperature will fall and

form part of the regulation- If the refrigerating system works with a higher suction

pressure during the night, the Sout

thermostat will all the timecall for cold, and accordingly the Sin thermostat will be thecontrolling thermostat.

Coordinated defrostCoordinated defrost can be carried out in two ways. Eitherwith cable connections between the controllers or via datacommunication.

Wire connections (extended controller only)One of the controllers is defined as main controller, and aclock module may be mounted in it, if required. The othercontrollers are defined as secondary controllers.The main controller can now start a defrost of all controllerssimultaneously. The individual controllers will carry out thedefrost and then go in waiting position until all controllers

have concluded the defrost. The main controller will subse-quently release all controllers to normal regulation.

Defrost via data communicationAll controllers are fitted with a data communication moduleand via the override function from a gateway the defrost canbe coordinated.

Extra options

If it is required that the temperature has to be shown on therefrigeration appliance, a display can be mounted. This

display will show the same values that are shown on thecontrollers display, but it contains no buttons for operation.

The controller can be mounted at a later date with one plug

module, if required by the application.

The controller is prepared with a plug so that the modulejust has to be pushed in.- If it is required that the periodic defrost may be changed so

that defrost can be performed at specific times of the day,a clock module may be mounted. It will then be possible to

set up to six defrost times per day and night.

The module is provided with battery backup.

- If it is required that operation is to take place from a PC, adata communication module must be placed in the

controller. Read more about data communication on page14.

Without night lid : With night lid

Main controller Secondary Secondary

controller controller


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4 Manual RS.8A.J2.02 Danfoss 6-2000 EKC 201

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:3S .setunimxtsaeltarofdeppotsniamertsumti,deppotssirosserpmocehtnehW 3

tuonurotemitehtrofstiawdnaffospirdrotaropaveehT:4S 4

S(dilthgintuohtiwnoitalugeR:6S tuo )noitaluger 6S(dilthginhtiwnoitalugeR:7S

ni )noitaluger 7


10/16


Light-emitting diodes (LED) on front panelThere are LEDs on the front panel which will light up whenthe belonging relay is activated.The LEDs will flash, if there is an error in the regulation.In this situation you can upload the error code on the displayand cancel the alarm by giving the uppermost button a briefpush.

DisplayThe values will be shown with three digits, and with a settingyou can determine whether the temperature are to be shownin C or in F.

Operation

The buttonsWhen you want to change a setting, the two buttons will giveyou a higher or lower value depending on the button you arepushing. But before you change the value, you must have

access to the menu. You obtain this by pushing the upperbutton for a couple of seconds - you will then enter thecolumn with parameter codes. Find the parameter code youwant to change and push the two buttons simultaneously.When you have changed the value, save the new value byonce more pushing the two buttons simultaneously.

Gives access to the menu(or cutout an alarm)

Gives access to changes

Saves a change

Shown in the table to the right are thedifferent kinds of operation that can beperformed. The symbols for pushing ofbuttons have the following meanings:

Push the upper button

Push the lower button

Push the two buttons simultaneously

Examples of operations

See the temperatur at the othercontrols sensor1. Push the two buttons simultaneously

See the temperatur at the defrostsensor1. Push the lower button

Set of a menu1. Push the upper button until a

parameter is shown2. Push one of the buttons and find the

parameter you want to change3. Push both buttons simultaneously

until the parameter value is shown4. Push one of the buttons and select

the new value5. Push both buttons again to conclude

the setting

Operating the pushbuttons

Displayreadout

Resulting

controller

setup

Normaloperation

(or alarm)

Known

codes andsettings

Codes and

settings =factory setting

Normal

operation

Normaloperation

Normal

operation

Alarm relais

not

activated

Alarm

ChangeChange

Setvalue

Roomtemp.

Roomtemp.

Power offPower

on

Roomtemp.

Roomtemp.

Roomtemp.

Roomtemp.

Roomtemp.

Alarm code/Fault code

Alarm code/Fault code

Room temp.

Room temp.

Defrost operation

Defrost sensor temp.

What to do Initial

controller

setup

Read og

changeparameter

codes and

settings

Re-establish

all factory

settings

Read defrostsensor temp.

Manually

start of adefrost

operation

Manually

stop of adefrost

operation

Cut out the

alarmrelais

Read

alarm andfault codes

Normal

operation(or alarm)

Unknown

codes and

settings

Unknown

settings

Normalopeation

(or alarm)

Normaloperation

Defrostoperation

Alarm relay

activated

Alarm relais

not

activated

Roomtemp.

Code

Roomtemp.

Roomtemp.

Roomtemp.

Roomtemp.

Roomtemp.

Roomtemp.

Read the

other sensor

temp.

Normaloperation

Roomtemp.

Sin/ S

outsensor temp.

Normal

operation

(or alarm)

Roomtemp.

Room temp. = Soutor Sin


11/16


Menu survey

Factory setting

If you need to return to the factory-set values, it can be done in this way:- Cut out the supply voltage to the controller

- Keep both buttons depressed at the same time as you reconnect the supply

voltage

:segassemgniwollofehtevignacrellortnocehT

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4E Sfed

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ni revoegnahc

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81o FFO 5

neebsaheludomnoitacinummocatadafielbissopebylnolliwgnittessihT)*

.rellortnocehtnidellatsni


12/16


Data

OrderingepyT noitcnuF .onedoC

102CKE rellortnocerutarepmeT 8507B480

102CKE

htiwrellortnocerutarepmeT

eriwaivtsorfeddetanidrooc

snoitcennoc7507B480

271AKE kcolcemitlaeR 0707B480

A171AKE eludomnoitacinummocataD

)eludom01TTF( 4907B480

B171AKE eludomnoitacinummocataD

)eludom584SR( 5907B480

161AKE tinuyalpsiD 9107B480

- tinuyalpsidehtroferiW

).scp42,gulphtiwm2( 9717B480

egatlovylppuS %51-/51+.c.d/.c.aV21

rewoPnoitpmusnoc

AV5,2etarapesotdetcennocebtsumsrellortnocehT

AV3.nimforemrofsnart

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)mho0001=52R(CTP

rellortnoCmetsysrosnes

gnirusaeMegnar

06- C05+

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53- ;C52+C1

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cirtcelEgnitcennoc

elbac

mm5.1.xaM 2 elbaceriw-itlum

syaleR

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evitcudni*51CAA3

sialertsorfeD /cimhoA6=.xamI,ONTSPS

evitcudni*51CAA3

rotomnaFsialer

/cimhoA6=.xamI,CNTSPSevitcudni*51CAA3

nommoClanimret

nommocehtniA11.xaMnoitcennoc

sialermralA/cimhoA4=.xamI,ONTSPS

evitcudni*51CAA1**Vm001taAm1=.nimI

tneibmA

erutarepmet

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gniruDtropsnart

C55-01-

C

07-04-

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slavorppA

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9-2-03706NEdna1-03706NEot.ccadetset-DVL2-28005NEdna1-18005NEot.ccadetset-CME

1-5-74906NEot.ccadaol51CA*sdaoltcatnocllamstanoitcnufnitucserusnegnitaocdloG**

Product survey

Pt 1000 ohm

Transformer

Real time clock

Wire for display

External display

Controller


13/16


Connections

Posterior view of controller

PlugThe belonging plugs are not bypacked.The green plugs (light on photo) are of the type Phenix.

The opposite plugs are with screw terminals and called:- MVSTBW 2,5/4 - ST - 5,08- MVSTBW 2,5/2 - ST - 5,08- MCVW 1,5/5 - ST - 3,81

The black plugs are of the type AMP module 2 (4-poled and2-poled)

(Danfoss can supplie sensors with plug)

SensorsS

inand S

outsensors must be connected. S

defis optional.

Alarm relaisThere is no connection between the contacts in alarmsituations and when the controller is de-energised. Thecontacts are closed during normal operation without alarm.

Data communicationIf a data communication module has been mounted, it isimportant that the installation of the data communicationcable be done correctly.

Cf. separate literature No. RC.8A.C...

084B7058

084B7057

Relais terminals Alarm relais Room for datacommunication or

clock

Supply voltage and

digital inputs

External display,

if applicable

Sensors

Sin, S

def, S

out

Coordinated defrostvia data communication

Coordinated defrost via

wire connectionsMain Secondary Secondarycontroller controller controller


14/16


Data communication

Examples

Example of menu display

If you want to know more about operation of controllers viaPC, you may order additional literature.

This page contains a description of a few of the possibilitiesyou will have when the controller is provided with datacommunication.

Each controller is providedwith a plug-in module typeEKA 171.

The controllers are thenconnected to a two-corecable.

Up to 60 controllers maybe connected to onecable.

This cable is also connectedto a gateway type AKA 243.

This gateway will now controlthe communication to andfrom the controllers.

It will collect temperaturevalues and it will receivealarms. When there is analarm the alarm relay will be

activated for two minutes.

The gateway can now beconnected to a modem.

When an alarm occurs fromone of the controllers, thegateway will - via the modem- make a phone call to theservice company.

At the service company amodem, gateway and PCwith system software typeAKM have been installed.

All the controllersfunctionscan now be operated fromthe various menu displays.

The programme will forexample upload all the

collected temperature valuesonce a day.

Measurements are shownat one side and settings atthe other.

You will also be able to seethe parameter names ofthe functions on page 4-9.

With a simple change-overthe values can also beshown in a trend diagram.

If you wish to check earliertemperature measure-ments, you can see themin the log collection.

AlarmsIf the controller is extendedwith data communication, itwill be possible to define theimportance of the transmit-ted alarms.The importance is definedwith the setting: 1, 2, 3 or 0.When the alarm then arisesat some time, it will result inone of the following activi-ties:

1 = AlarmThe alarm message is sentoff with alarm status 1. Thismeans that the gateway withaddress 125 in the systemwill have its alarm relayoutput activated for twominutes. Later, when thealarm ceases, the alarm textwill be retransmitted, butnow with status value 0.

2 = MessageThe alarm text is transmittedwith status value 2. Later,when the messagelapses,the alarm text isretransmitted, but now withstatus value 0.

3 = AlarmAs 1, but the mastergateways relay output is notactivated.

0 = Suppressed informationThe alarm text is stopped atthe controller. It is transmit-ted nowhere.


15/16


Appendix

Night lid on or offThe controller uses the function to indicate either the S

out

temperature (night lid off) or the Sintemperature where it also

uses other alarm limits (night lid on).

The situation is either determined by a contact function on theDI input or by the interaction between the two thermostatfunctions.- If S

inconstantly calls for refrigeration and S

outis the thermo-

stat that cuts in and out, the night lid is off.- If S

inparticipates in the thermostatic control together with

Sout

, the night lid has been put on.

Temperature alarmsThere are min. and max. limits for both the S

intemperature

and Sout

temperature. The values for Sincan be displaced

when the regulation registers that the night lid has been puton, or if a signal is received at the DI-input and this input hasbeen defined for setting 3.

How to set the controller1. Set the S

outthermostat to the expected temperature

2. Set Sinto the same temperature or a little higher, so that

this thermostat will not cut out3. Wait for the temperature to fall, and the S

outthermostat will

cut out and in4. Measure the S

intemperature (the product temperature will

be a couple of degrees lower than the Sin temperature)5. If the S

intemperature is satisfactory, proceed to the next

point. If not, change the setting of the Sout

thermostat andrepeat the above procedure

6. When the setting of the Sout

thermostat has been completed

the Sinthermostat can be set.

Note the Sintemperature: it will fluctuate a couple of

degrees depending on when the Sout

thermostat cuts in andout. Register the lowest S

intemperature.

Set the Sinreference so that the reference plus the Sindifferential will be one degree lower than the lowest Sin

temperature. (The Sindifferential is normally smaller than

the Sout

differential).The S

inreference must be set higher than the highest S

out

temperature.

If you cannot start the controllerCheck:- that the sensors used are of the same type as the ones set

in O06- the S

inthermostats setting

- the operating status of the controller

"Day" : "Night"


16/16

AC-RDT

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies toproducts already on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respecitve companies. Danfoss and Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Documents

Manual EKC 201 Inglese