The DIN NANO 4CK is a 4 relays electronic regulator DIN rail designed to control refrigerated counters, display windows and static or ventilated refrigeration units with off-cycle or electrical defrosting in real time (RTC). It is fitted with three analogue inputs for NTC temperature probes, one of which is configurable as a digital input, an additional digital input, four relays for the compressor control, fans, defrosting function and alarm and buzzer.
As option the connection to an echo temperature repetition.

Main characteristics
• Can be configured for hot, cold or neutral zone applications.
• Can be configured for managing day / night (automatic modification of the setpoint for energy saving) activated by time mode (real time clock) or by means of the digital input.
• Can be configured to manage two evaporators with dual temperature sensor for defrost termination.
• Relay managing compressor and fans of evaporator (2 non-configurable relays) and defrosting resistances, alarm, pump down start, room light and compressor output (2 configurable relays).
• Defrosting activation in real-time, up to 6 starts in 24h.
• Defrosting can be configured for off-cycle, heating element or cycle inversion and frequency and durationcan be set. End-of-defrosting can be based on time or temperature.
• Key operated manual START/STOP defrosting.
• Key operated ON/OFF.
• Cold room light ON/OFF switch with key or by means of door switch (if defrost output is configured like cold room light).
• A temperature repeater echo display is available as an option.
• 3-figure LED display sign, decimal point and plant status icons.
• Internal buzzer for acoustic signals.
• PEGO programming philosophy guaranteeing immediate start-up.
• RS485 serial connection with Modbus-RTU or Telenet protocol.
• Power supply 230Vac.
• HACCP function with memory and visualization of the last alarm.