Dixell XR75CX 5N7I3 cooling controller with fan control, auxiliary relay and RS485

The Dixell Model XR75CX, 32 x 74 mm, is a microprocessor controller suitable for medium and low temperature cooling applications. It has 4 output relays to control compressor, fan, defrost (electric or hot gas) and light (configurable). Includes RTC (Real Time Clock) circuitry that allows programming of up to 6 defrost cycle times, split between weekdays and days off. The "Day and Night" function, in turn, allows you to set two different desired temperatures to save energy during the night hours.

The Dixell XR75CX controller comes with up to four NTC or Pt1000 inputs - one for temperature control, the other for evaporator defrost control and fan control on the evaporator. One of the two digital inputs can be used as a third temperature input. The fourth input can be used to set the condenser temperature alarm or to display the condenser temperature.
The serial interface allows the device to be connected to a ModBUS RTU network, such as the Dixell X-Web family of monitoring networks. The HOT Key interface allows for quick and easy programming using the HOT Key keypad.
The device is fully configurable with special parameters that can be easily entered using the keypad.