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Sr. 

No. 

Parameter setting method

Description of parameters and functions.

Parameter 

21

Sr. 

No. 

Parameter setting method

Description of parameters and functions.

Parameter 

22

D2
Parameter

35

To change D2 parameter, 
press the set key.

0V

230V

Function :

 Fault sensing logic.

0V

0V  :  0V at HP/LP/AUX input will be 
 

sensed as fault and trip the 

 

compressor.

230V :  230V at HP/LP/AUX input will be 

 

    compressor.

Use UP/DOWN keys to set desired value.

 

    sensed as fault and trip the 

Range

Min 

Max 

   Fact. Set 

To change D3 parameter,
press the set key.

0 Sec

36

Min 

Min 

Use UP/DOWN keys to set desired value.

Example  : 

If  this  parameter  is  set  to  5 

sec,then LP fault will be sensed only when 
it present continuously for 5 Secs.

180 Sec

30 Sec

D3
Parameter

Function :

 To set LP sensing delay.

Range

Max 

   Fact. Set 

Range

Max 

   Fact. Set 

press the set key.

To change D4 parameter, 

Parameter

D4

37

Function :

 To set  reset mode for HP fault.

MAN

AUTO

AUTO

Range

Min 

Max 

   Fact. Set 

Range

Min 

Max 

   Fact. Set 

If this parameter set to “MAN” mode HP 
fault  will  be  cleared  only  after  pressing 
reset key for 2 seconds. 
If this parameter is set to “AUTO” mode 
HP  fault  will  be  cleared  automatically 
when it is healthy.  

MAN : Manual Mode.

Use UP/DOWN keys to set desired 
value.

AUTO : Auto mode.

TON
Parameter

press the set key.

To change TON parameter, 

39

Range

Min 

Max 

   Fact. Set 

Range

Min 

Max 

   Fact. Set 

At  room  probe  fail  condition  when  E1 
parameter is selected as 'CYC' then the 
ON cycle is specified by TON parameter.

1 Min

30 Min

10 Min

Function :

  To set ON cycle time for 

compressor at room probe fail.

Use UP/DOWN keys to set desired value. 

To change E1 parameter, 
press the set key.

Parameter

E1

38

Range

Min 

Max 

   Fact. Set 

Range

Min 

Max 

   Fact. Set 

CYC : Relay performs a duty cycle of

OFF : Relay will stay OFF.

ON : Relay will stay ON. 

When set to 

           as per TON & TOFF . 

ON

OFF

CYC

Function :

 To set Compressor Relay 

status on Probe Failure.

Use UP/DOWN keys to set desired 
value. 

press the set key.

To change TOFF parameter, 

TOFF
Parameter

40

Range

Min 

Max 

   Fact. Set 

Range

Min 

Max 

   Fact. Set 

At  room  probe  fail  condition  when  E1 
parameter is selected as 'CYC' then the 
OFF  cycle  is  specified  by  TOFF 
parameter.

1 Min

30 Min

4 Min

Function :

 To set OFF cycle time for 

compressor at room probe fail.

Use UP/DOWN keys to set desired 
value. 

E7
Parameter

             will be dispalyed.           

             will scroll.

TEMP : During defrost, temperature

DEFR : During defrost, 'Defrost ON' 

Use UP/DOWN keys to set desired value. 

41

Function :

 To set Display at defrosting.

To change E7 parameter, 
press the SET key.

TEMP

DEFR

TEMP

Range

Min 

Max 

   Fact. Set 

Range

Min 

Max 

   Fact. Set 

Summary of Contents for CRC-2052

Page 1: ......

Page 2: ...Oil Pressure Switch OPS I P Index 02 Index DESCRIPTION PARAMETER Pg No To set Evaporator Fan stop temperature To set Evaporator Restart Delay To set Evaporator Fan status at compressor off To set Evap...

Page 3: ...e compressors from close starts In case of probe error or temperature alarm the instrument signals the event through acoustic signal and by closing the relay contact By pressing the mute key the buzze...

Page 4: ...Set mode Also used as enter key if controller is in Set mode program mode Also used to save changed value Used to enter in manual defrost and to stop defrost if defrosting is ON Used to enter in fault...

Page 5: ...ON OFF ON OFF Flashing ON OFF Flashing ON OFF ON OFF ON OFF OFF ON ON OFF ON OFF ON OFF ON OFF 07 High temperature alarm for Room temperature means room temperature is equal or above the set value of...

Page 6: ...enerate HTAlarm SP 0 5 C 50 0 C 50 0 C Range Min Max Fact Set Message on Display Message on Display 02 P3 Parameter Function To set allowable low temperature limit Example Setting this parameter at Us...

Page 7: ...press the set key To change P5 parameter 04 Function To set room probe calibration 10 0 C 10 0 C 0 0 C Range Min Max Fact Set 11 Sr No Parameter setting method Description of parameters and functions...

Page 8: ...f a power failure P10 Parameter 09 Function To set type of defrost To change the P10 Parameter press the set key Use UP DOWN keys to set desired value HTR HTG HTR Range Min Max Fact Set HTR Heater def...

Page 9: ...e the QFD Parameter press the set key Use UP DOWN keys to set desired value This is the maximum amount of time allowed for Quick Freeze If set to 0 there will be no quick freeze 1hr Example If QFS is...

Page 10: ...10 0 C to 10 0 C may be offset by a degree or so To compensate for this error you may need to add or minus the degrees required to achieve the correct temperature Setting Use UP DOWN keys to set desi...

Page 11: ...mpressor current is greater than 15 0 A then and exist till C2 current sensing delay then C OL fault exists and flash on display Compressor will be tripped on this fault NOTE 20 50A CT option availabl...

Page 12: ...l Mode Use UP DOWN keys to set desired value AUTO Auto mode TON Parameter press the set key To change TON parameter 39 Range Min Max Fact Set Range Min Max Fact Set At room probe fail condition when E...

Page 13: ...er press the SET key 0 Min 30 Min 7 Min Range Min Max Fact Set Range Min Max Fact Set Parameter LSD Use UP DOWN keys to set desired value 44 Function This parameter is used to enable disable light rel...

Page 14: ...unction To set display at power OFF mode Use UP DOWN keys to set desired value OFF Display will show OFF TEMP Display will show Temperature LED Display Will be Blank At power OFF mode power OFF LED wi...

Page 15: ...tion 0 1 C LSV Relay 10A 230vac Resolution 0 1Amp RS485 Connectivity Modbus RTU Protocol Mounting Wall mounting Controller CRC 2052 0 0 Operating Temp 5 C to 50 C non condensing 0 0 Storage temp 20 C...

Page 16: ...w Connection Diagram To set fault recover delay Get to know your Controller 29 Introduction 29 Instruction Manual LVM Line Voltage Monitor Three Phase VMRC 10 3 Introduction VMRC 10 3 is three phase L...

Page 17: ...more than TTD value then only fault is raised and this fault is applicable to Under voltage Over voltage and Unbalance fault i e In case of Phase Loss or Phase sequence fault alarm will come immediate...

Page 18: ...s to set desired value This parameter provided to calibration voltage reading When dsP is L n then it sets calibration for r n Sr No Parameter setting method Description of parameters and functions Pa...

Page 19: ...7 8 9 R 15 17 19 21 Y B N General Specification Under voltage and Over voltage detection Application Voltage and phase sequence monitoring and controlling Connections Screw terminals 2 5sqmm one wire...

Page 20: ...36...

Page 21: ...part of this manual may be reproduced or transmitted in any form or by any means without the prior written permission of the company Notice Disclaimer Warranty This manual its contents remain the sole...

Page 22: ...s Globe Valves Hand Valves Flow Switches Solenoid Valves OUR OTHER PRODUCTS Cold Room Controller Chiller Controller Two Compressors Controller Heating Controller Humidity Controller Pressure Controlle...

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