Sub-Zero CRC-2020 User Manual Download Page 14

Sr. 

No.

Parameter setting method

Description of parameters and functions.

Parameter

-15V

15V

0V

08

Function : To set calibration of voltage  
for y-b or y-n phase.

To change the Cyb parameter, 
press the set key.

Range

Min

Max

Fact. Set 

Parameter

Use  UP/DOWN  keys  to  set  desired
value.

This  parameter  provided  to  calibration 
voltage reading.

When dsP is L-L then it sets calibration for 
y-b.
When dsP is L-n then it sets calibration for 
y-n.

Parameter

Use  UP/DOWN  keys  to  set  desired
value.

This  parameter  provided  to  calibration 
voltage reading.

When dsP is L-L then it sets calibration for 
r-b.
When dsP is L-n then it sets calibration for 
b-n.

-15V

15V

0V

09

Function : To set calibration of voltage  
for r-b or b-n phase.

To change the Crb parameter, 
press the set key.

Range

Min

Max

Fact. Set 

10

Function : To set view display mode.

To change the dsP parameter, 
press the set key.

L-L

L-n

L-L

Range

Min

Max

Fact. Set 

Parameter

Use  UP/DOWN  keys  to  set  desired
value.

There are two type of display output, Line 
to Line Voltage (L-L) and Line to Neutral 
(L-n), Depending on this parameter REF 
parameter also changes. 

26

Sr. 

No.

Parameter setting method

Description of parameters and functions.

Parameter

06

Function : To set fault recover delay. 

To change the tdr parameter, 
press the set key.

0Sec

240Sec

10Sec

Range

Min

Max

Fact. Set 

Parameter

Use  UP/DOWN  keys  to  set  desired
value.

Time delay provided to add delay in fault 
recover  time,  to  avoid  sudden  fault 
triggering and reset.

25

07

To change the CrY Parameter, 
press the set key.

-15V

15V

0V

Range

Min

Max

Fact. Set 

Function : To set calibration of voltage  
for r-y or r-n phase.

Parameter

Use  UP/DOWN  keys  to  set  desired
value.

This  parameter  provided  to  calibration 
voltage reading.

When dsP is L-L then it sets calibration for 
r-y.
When dsP is L-n then it sets calibration for 
r-n.

VMRC-10/3

VMRC-10/3

nO

YES

nO

11

Function : To restore the default settings 
of the controller.

To change the FS parameter, 
press the set key.

Range

Min

Max

Fact. Set 

Use UP/DOWN keys to set desired 
value.
When set to 1, all parameters are 
programmed to factory values.

Summary of Contents for CRC-2020

Page 1: ...AMP CRC 2020...

Page 2: ...ssor current C OL 13 Current sensing delay C2 13 To enable or Disable HP sensing D0 13 To enable or disable LP sensing D1 14 Fault sensing logic D2 14 To set LPsensing delay To set reset mode for HPfa...

Page 3: ...t up the instrument for each specific function The CRC 2020 controller can be used for several applications with a measuring range from O O 50 0 C to 50 0 C Computer Connectivity over RS485 and Remote...

Page 4: ...croll in Program mode Used to enter into the program mode Used to switch OFF ON the light Used to enter into the Amp mode where compressor current can be viewed AMP High temperature alarm for Room mea...

Page 5: ...that the set point has been stored in memory 01 To change Set Point parameter press the set key P3 0 5 C P2 0 5 C 0 0 C Range Min Max Fact Set To set other parameter Press hold PRG key for 2 seconds D...

Page 6: ...the set point 0 is set at 10 0 C and differential is set at 0 2 0 C then when the system reaches 0 10 0 C the comp relay will cutout Since 0 the differential is 2 0 C the comp Relay 0 will cutin at 1...

Page 7: ...ill take place once Example If P9 parameter is 30 mins then at power after 30 mins defrosting will take place once BUZ Parameter 09 Function To enable disable buzzer To change the BUZ Parameter parame...

Page 8: ...ault for compressor If this parameter is set to Enable then controller will detect HP trip To change the D0 parameter press the set key D0 Parameter 14 Function To enable or Disable HP sensing DIS ENB...

Page 9: ...emperature will be dispalyed DEFR At Defrosting Defrost ON will scroll 24 Function To set Display at defrosting To change E7 parameter press the SET key TEMP DEFR TEMP Range Min Max Fact Set Range Min...

Page 10: ...ed to set the Unit ID of the device 29 Function To set Unit ID To change Unit ID parameter press the SET key 1 240 Range Min Max Fact Set Range Min Max Fact Set NO YES NO CCRH 28 Function Clear Compre...

Page 11: ...normal mode and displays the Room Temperature and all settings are recorded 34 Function To exit programming To exit programming parameter press the SET key 20 CRC 2020 Technical Data Housing Plastic...

Page 12: ...To set Reference Voltage 23 23 DESCRIPTION PARAMETER Pg No To set program mode 23 To set Undervoltage Limits 25 To set Un Balance Value To set Time Delay 25 To set Calibration of Voltage To set Calib...

Page 13: ...ce value To change the unb parameter press the set key 10V 120V 60V Range Min Max Fact Set Use UP DOWN keys to set desired value If the a c voltages goes below this limit will trip respective a c on u...

Page 14: ...t desired value There are two type of display output Line to Line Voltage L L and Line to Neutral L n Depending on this parameter REF parameter also changes 26 Sr No Parameter setting method Descripti...

Page 15: ...1 2 RELAY NC C NO 3 7 8 9 R 15 17 19 18 21 Y B N Main Functions Voltage Monitoring Phase Sequence Monitoring Phase Loss and Phase Unbalance detection Uv and Ov Detection Settable Uv and Ov Parameter...

Page 16: ...29...

Page 17: ...mages No 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...

Page 18: ...Globe Valves Hand Valves Flow Switches Solenoid Valves OUR OTHER PRODUCTS Cold Room Controller Chiller Controller Two Compressors Controller Heating Controller Humidity Controller Pressure Controller...

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