Model XR70CX, format 32x74mm, is microprocessor based controller, suitable for applications on medium or low temperature ventilated refrigerating units.
It has four relay outputs to controlcompressor, fan, and defrost, which can be either electrical or reverse cycle (hot gas). The last one can be used as light, for alarm signalling or as auxiliary output.
It is also provided with up to 4 NTC or PTC probe inputs, the first one for temperature control, the second one, to be located onto the evaporator, to control the defrost termination temperature and to managed the fan. The digital input
can operate as third temperature probe. The fourth one, to connect to the HOT KEY terminals, is used to signal the condenser temperature alarm or to display another temperature.
The HOT-KEY output allows to connect the unit, by means of the external module XJ485-CX, to a network line ModBUS-RTU compatible such as the Dixell monitoring units of X-WEB family.
It allows to program the controller by means the HOT-KEY programming keyboard. The instrument is fully configurable through special parameters that can be easily programmed through the keyboard.