Models XLR130 and XLR170, 210x230mm format, are microprocessor based controllers suitable for applications on medium or low temperature refrigerating units. They are provided with four (XLR130) or six (XLR170) relay outputs to control compressor, defrost - which can be either electrical or hot gas (XLR170) - the evaporator fans (XLR170), the lights, the alarm and an auxiliary output. They are also provided with three NTC or PTC probe inputs, one for temperature control, one to control the defrost end temperature of the evaporator and the third, optional, for the display. There are two digital inputs (free contact) for the door switch and configurable by parameter.
The standard TTL output allows the user to connect, by means of a TTL/RS485 external module, a ModBUS-RTU compatible monitoring system and to programme the parameter list with the “Hot Key”.
Each model in the XLR100 can be provided with a Real Time Clock which allows programming of up to eight daily defrost cycles, divided into holidays and workdays. A “Day and Night” function with two different set points is fitted for energy saving.
Advanced Multifunction Controller for N.t., M.t. and L.t. Cold Rooms
Power supply: 24, 110, 230Vac
Display: n° digits: ± 3 d.p.
Keyboard: push buttons: 8
Alarm, block alarm, pressure switch, start defrost, energy saving, ON/OFF, AUX, holiday: configurable
Door switch: present
Hot Key/Prog Tool Kit output: present
Serial output: RS485 optional
Real time clock: optional
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