Chiller Controller...
 
   
  SZ 7510P-DI    Temp. Controller with digital input
   


 
 Manual / Wiring Diagram
 

Main Features

Cooling & Heating output.

 

Memory retention, time delay for compressor protection.

 

Auto operation incase of sensor error.

 

Power switch.

 

Digital input (HP, LP, OSS, Phase Loss).

 
Input & Output

Relay output : 8(3)A.

 

Temp. Sensor Input : 1 NTC.

 

Application

Chiller machines & similar applications.

 
General

Temperature range -50°C to +99°C.

Specification

230VAC Standard. Other models with 12VDC, 24VDC, 110VAC on request.

 

Panel cutout : 29 X 71mm Screw terminals : Admit 1X 2.5 mm2 wire.

 
 
  NANOCHILL (NC 110 /120)
 


 
Manual / Wiring Diagram
 

The Subzero “NANO CHILL” are controllers that integrates all the basic control functions required by a chiller.
A user friendly LCD screen displays all parameters, status and alarm messages. It is a panel mounted controller dedicated to control the chiller and its various devices.
There are safety features which include shutting down the system incase of a fault from HP, LP, Liquid level & Anti-freeze for NC110 and HP, LP, SPP , AUX fault, Pump O/L, Cond. O/L, Antifreeze Liquid Level for NC120.

 
Main Features

Blue 16 X 2 LCD with backlighting to display all parameters.

 

Precise temperature control in 0.1OC resolution.

 

Liquid level sensing with 3 probes (Low, Medium, High).

 

Relay outputs: Compressor , Pump and Relay3( Alarm or Water Sv) for NC110.

 

Relay outputs: Condenser, Compressor, Pump, Alarm, Water SV, Solenoid Valve for NC120.

 

HP, LP, Auxiliary fault trip protection for Compressor.

 

2 NTC probes for Liquid temp + Antifreeze temperature.

 

Antifreeze temperature will display with “ ”key press on NC110

 

Antifreeze & Condenser temperature will display with “ ”key press on NC120

 
Input & Output

Temp. Sensor Input : 2 NTC for Liquid & Antifreeze.

 

Additional Temp. Sensor Input for Condenser Temperature.

 

Relay Output 1 : 8(3)A Compressor.

 

Output 2 : 5A Pump, Water SV / Alarm for Nc110.

 

Output 2 : 5A Condenser, Pump, Alarm, Water SV, Precision SV for NC120.

 
General Specification

Temperature range -30°C to 50°C( Resolution 0.5°C.) NC110.

 

Temperature range -30°C to 50°C( Resolution 0.1°C.) NC120.

 

230VAC Standard. 110VAC on request.

 

Panel cutout : 29 X 71 MM .

 

Screw terminals : Admit 1X 2.5 mm2 wire for NC110

 

Molex type connector for NC120.

   
   
  MICROCHILL
 


 
Manual / Wiring Diagram
 

The Subzero ‘MICROCHILL’ is a controller that integrates all the control functions required by a chiller. It is a complete, independent, rugged and highly reliable unit. It is one of the most efficient chiller controller of it’s kind in the country with the kind of features it provides.
A user friendly LCD screen displays all parameters and message alarms on the display. In addition to the LCD there are LED’s provided for instant status of all controls in the system. The Microchill controller allows you to manage refrigeration units having different configurations.
There are safety features which include shutting down compressor incase of OSS, COMP, HP, LP, O/L faults. When a fault in the pump occur, then pump & condenser will get shut down in case of Pump O/L , SPP, Low liquid level.

 
Main Features

LCD with backlighting to display all parameters.

 

Audible alarm for every input.

 

HP/LP/OSS trip protection for compressor.

 

Compressor protection algorithm.

 
Input & Output

Analog Inputs : Control, Antifreeze

 

Digital Inputs : HP, LP, Comp O/L, Pump O/L, Cond. O/L, SPP, CWFS, EWFS, Medium Water Level, Low Water Level.

 

Relay Outputs : 10A for Compressor 5A for Pump ,Water SV

 
General

Temperature range -30°C to 50°C.

Specification

230VAC Standard. 110VAC on request.

 

Panel cutout : 92 X 92 MM.

   
   
  MEGACHILL
 




 
Manual / Wiring Diagram
 

The Subzero ‘MEGA CHILL’ is a controller that integrates all the control functions required by a chiller. It is a complete, independent, rugged and highly reliable unit. It is one of the most efficient chiller controller of it’s kind in the country with the kind of features it provides.
A user friendly LCD screen displays all parameters and message alarms on the display. In addition to the LCD there are LED’s provided for instant status of all controls in the system. The Mega Chill controller allows you to manage refrigeration units having different configurations.
The parameters are protected with a hardware key known as ”PROKEY”. Without prokey user cannot change parameters, but can view the parameters. Thus prevent’s any unauthorized access to the parameters.
It protects compressor & other devices by Switching them OFF incase of respective faults. For example it trips the compressor on HP fault and not switching it on till the fault persists.

 
Main Features
 

7 segment LED display & LCD with backlight to display all parameters and control status.

 

Audible alarm with LCD message for all faults

 

HP/LP/OL/OSS trip protection for compressor.

 

Overload trip protection for pump and condenser.

 

Regulates water level via water solenoid valve.

 
Input & Output
 

Analog Inputs : 6 NTC probes for CONTROL, E/INLET, E/OUTLET, C/INLET, C/OUTLET, AFT.

 

Digital Inputs : HP, LP, OSS, AFT, Comp O/L, Pump O/L, CCH, Cond. O/L, SSP, CWFS, EWFS, Bitzer comp O/L, R, Y, B, Medium Water Level, Low Water Level.

 

Relay Outputs : Pump, Compressor, Condenser Fan, Alarm, Water Solenoid Valve, Bitzer Comp Reset, Liquid SV.

 
General

Temperature range -30°C to 50°C(resolution: 0.5°C).

Specification

230VAC Standard. 110VAC on request.

 

Panel cutout : 167 X 124 MM for Display Board.

 

Overall size : 150 X243 MM for Input/Output Board.

   
   
  ULTRACHILL
 


 
Manual / Wiring Diagram
 

The Subzero “ULTRACHILL” controller is a multi compressor chiller controller. It controls chillers with up to 4 compressor. It integrates all the basic control functions required by chiller. Ultrachill has a graphic display to display the different parameters, status & alarm messages. It is a panel mounted controller dedicated to controlling the chiller and its various devices.

 
Main Features

Graphical LCD display. (128X64) with Touch Screen.

 

It has Chiller inlet, outlet and Antifreeze temp. Sensors.

 

Precise temperature control in 0.1° C resolution.

 

Suction and discharge pressure sensing for each compressor.

 

Current sensing for each compressor.

 

Controller has START/STOP switch .

 

Compressor protection by tripping on Hp, Lp, OL OSS fault input.

 

Overload trip protection for pump and condenser.

 

Provision for precision cooling mode.

 

Service alarms based on compressor and pump run hours.

 

Audible alarm with buzzer for all faults

 

Regulates water level via water solenoid valve & Liquid level sensor.

 

PC Connectivity with modbus, Bluetooth connectivity(Optional).

 

USB interface to download & upload data from the controller.(Optional)

 
Input& Output

Analog inputs : 5 NTC, (4 - 20mAmp / 0 - 10Vdc / 0 - 5Vdc).

  Pressure inputs : 8 nos.
  Liquid level sensor.
 

Current Input : 1 to 20A (resolution 1A).

 

Digital input : HP, LP, Compressor OL, Condensor OL, OSS(for each unit) SPP, EWFS, Pump OL, AUX.

 

Digital relay outputs : 5A for Compressor, Condensor, Pump, Precision SV, Alarm, Water SV.

 
General

Temperature range -30.0°C to + 50.0°C (resolution 0.1°C)

Specification

230VAC Standard.

 

Panel cutout : 105.2 X164.3

 

Molex type Connectors.