Defrost / Freezer / Cold Room Controller ...
   
 
SZ 7524P (Freezer Controller)
     
Main Features Relay output : Compressor + Heater + Evap. Fan.
  HP/LP/OSS trip protection for compressor.
  Compressor protection algorithm.
  Auto/Man defrosting facility (Time/ Temp based)
 
Input & Output Relay Output 1 & 2 : 8(3)A for Heater & Evap. Fan.
  Relay Output 3 : 8(3)A Compressor.
  Temp. Sensor Input : 2 NTC (Room & Evap. Coil).
 
Application

Freezer and cold room controller
 
General Temperature range -50C to 50C.
Specification 230VAC Standard. Other models with 12VDC, 24VDC, 110VAC on request.
  Panel cutout : 29 X 71 mm Screw terminals : Admit 1X 2.5 mm2 wire.
 
   
   
  SZ 7524P (Freezer Controller)  (Din Rail Mount / Wall Mount )


 
Manual / Wiring Diagram

 

Main Features Relay output : Compressor + Heater + Evap. Fan.
  HP/LP/OSS trip protection for compressor.
  Compressor protection algorithm.
  Auto/Man defrosting facility (Time/ Temp based).
 
Input & Output Relay Output 1 & 2 : 8(3)A for Heater & Evap. Fan.
  Relay Output 3 : 8(3)A Compressor.
  Temp. Sensor Input : 2 NTC (Room & Evap. Coil).
 
Application

Freezer and cold room controller.
 
General

Temperature range -50C to 50C.
Specification 230VAC Standard. Other models with 12VDC, 24VDC, 110VAC on request.
  Wall mounted &Din rail mounting.
   
   
  SZ - 7527  (Freezer Controller)
   


 
Manual / Wiring Diagram
 

Main Features Blue LCD with backlighting with 16 X2 characters to display all parameters.
  Relay out puts Compressor, Heater, Evap. Fan and Alarm.
  HP/LP/OSS trip protection for Compressor.
  Auto/ Man defrosting facility (Time/ Temp Based).
  Special Software to indicate probable heater fault.
 
Input & Output Relay output : 8(3)A for Compressor.
  Relay output : 8(3)A for Heater, Evap. Fan.
    Alarm : 5A.
  Temp. Sensor Input : 2 NTC (Room & Evap. Coil).
 
Application

Freezer & cold room applications.
 
General Temperature range -50C to 50C.
Specification 230VAC Standard. Other models with 12VDC, 24VDC, 110VAC on request.
  Panel cutout : 29 X 71 mm Screw terminals : Admit 1X 2.5 mm2 wire.
   
   
  SZ 7534 (Cold Room Controller)
 


 
Manual / Wiring Diagram
 

Main Features Digital input for pressure cutout.
  HP/LP/OSS trip protection for Compressor.
  Auto/ Man defrosting facility (Time/Temp based).
  Inbuilt buzzer.
 
Input & Output Temp. Sensor Input : 2 NTC (Room & Evap. Coil).
  Relay Output : 8(3)A for Compressor, Heater & Evap. Fan.
  Relay Output : 5A for Light.
 
Application Freezer and cold room controller.
 
General Temperature range -50C to +50C.
Specification 230VAC Standard.
  Panel cutout : 31 X 150 mm
  Spade terminal connections.
   
   
 
  CRC-1100 (Freezer / Cold Room Controller)
 


 
Manual / Wiring Diagram
 

The CRC-1100 is a panel mounted controller dedicated to controlling the cold room and its various devices.

 

The controller controls the defrost in the system based on either an electrical heater where the compressor is stopped, or at cycle inversion using warm gas where the compressor keeps on working.

 

It is also possible to select the interval between defrosts and a maximum time out after which the defrost is interrupted. The same probe which controls the defrost cycle is also used to control the evaporator fans. It is possible to set the temperature, the time delay time after a defrost and the relation of fans with the compressor.

 

There are safety features which include shutting down the system incase of a fault from a pressure control or similar device.

     
Main Features LCD with backlighting to display all parameters.
  2 NTC probes for cold room temp + evap. coil temperature.
  Relay outputs : Compressor + Heater + Evap. Fan + Alarm.
  Audible alarm. Digital inputs : 2nos (a) Door switch (b) Pressure cutout.
  HP/LP/OSS trip protection for compressor. Compressor protection algorithm.
  Auto/Mannual defrosting facility (Time/Temp based).
  Special software to indicate probable heater fault.
 
Input & Output Relay Output 1 : 8(3)A Compressor.
  Output 2 : 8(3)A Heater.
  Output 3 : 8(3)A Evaporator Fan.
  Output 4 : 5A Alarm
  Temp. Sensor Input : 2NTC for Cold room chamber and Evaporator Coil.
 
General Temperature range -50C to +50C.
Specification 230VAC Standard. 110VAC on request.
  Panel cutout : 92 X 92 mm Screw terminals : Admit 1X 2.5 mm2 wire.
   
   
  CRC-1200 (Cold Room Controller)
 


 
Manual / Wiring Diagram
 

The CRC-1200 is a panel/wall mounted controller dedicated to controlling the cold room and its various devices.

The controller controls the defrost in the system based on either an electrical heater where the compressor is stopped, or at cycle inversion using warm gas where the compressor keeps on working.

It is also possible to select the interval between defrosts and a maximum time out after which the defrost is interrupted. The same probe which controls the defrost cycle is also used to control the evaporator fans.Post drip and condensor fan control are amongst many other features in this contoller.

There are safety features which include shutting down the system incase of a fault from a pressure control or similar device.
     
Main Features LCD with backlighting to see system status and 1 display for temperature.
  2 NTC probes for Cold room temp + Evap. coil temperature.
  Computer Connectivity over RS485 and Remote monitoring (Optional).
  Fast Freeze mode, Inbuilt RTC, Door Input, Audible alarm.
  Relay outputs : Compressor/ Cond.Fan/ Evap. Fan/ Heater/ Alarm.
  HP/LP/SPPR trip protection for compressor.
  Auto/Man defrosting facility (Time/ Temp based), Power Switch Key.
  Last 10 Fault Logs with Date/ Time Stamp.
 
Input & Output Relay Output : 8(3)A Compressor, Condenser Fan, Evaporator, Fan, Alarm.
  Temp. Sensor Input : 2NTC for Cold room chamber and Evaporator Coil
  Digital Input : HP / LP / SPPR Input / Door Input (Potential free)
  RS485 connector for PC Connectivity.
 
General

Temperature range -50C to 35C.
Specification 230VAC Standard
  Screw terminals : Admit 1X 2.5 mm2 wire.
 
   

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