CONTROLLER FOR REFRIGERATION AND DEFROSTING

TC-960Ri LOG is a temperature controller for frozen goods that automates the defrosting processes in accordance with the needs of the facility, thus providing large power savings. It has two sensors: one for ambient temperature and the other fixed to the evaporator that controls the defrosting ending and the fan restarting. It is also fitted with an alarm output and buzzer that can be activated by different events. It is fitted with two digital inputs, being able to read the supply voltage (protecting the loads from under- and over-voltage), and an hour-meter function that indicates when the time for compressor maintenance has come. Beyond these resources the instrument has an internal data-logger with 70 hours of autonomy, or almost 3 days ( in a 30 seconds sample time). It also has a digital filter for the temperature reading that decrement the response time of the ambient sensor to prevent the compressor action by fast changes of this measurement. Product complies with NSF (United States).

One of the most comprehensive low temperature controller loaded with enhanced energy saving and safety features. It offers four relay outputs, two sensors, two digital inputs, buzzer, normal and economy setpoint modes and built-in datalloger, which enables to store temperature data and output running time in user's definable intervals. Defrost cycles initiate based in cyclic time, evaporator temperature or agenda, thanks to the built-in ldquo;RTCrdquo; allowing up to 8 daily defrost events. The ldquo;RTCrdquo; also offers the possibility to set economy setpoint activations. An hour counter monitors compressor running time in order to indicate the exact period for maintenance.

It has a serial communication for connection to Sitrad.

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Technical Specifications:

Power supply: 12 or 24 Vdc plusmn; 10%

Control temperature: -58F to 167F (-50C or 75C)

Operating temperature: : 32F to 104F (0C to 40C)

Resolution: 0.1C from -10C to 75C, 1C in the rest of the range / 1F over the entire range.

Operating humidity: 10 to 90% RH (without condensation)

Load currents (outputs):

COMP: 12(8)A/240 Vac 1 HP

FANS: 5(3)A/240 Vac 1/8 HP(evaporator fan)

DEFR: 5(3)A/240 Vac (defrost resistance or hot gas)

ALARM: 5(3)A/ 240Vac 1/8HP