Danfoss ERC 21X Temperature Controller Series
Thermostat
• On/Off thermostat
• Day/night, continuous cycle, emergency mode
• Pre-installed applications
• Compatible with wide range of sensors (NTC 5K and 10K, Pt1000, PTC)
Defrost
• Natural, electrical and hot gas defrost
• Defrost on demand
• Start via front button, DI input or time interval
• Stop on time, temperature or front button
Compressor
• Zero cross switching technology
• Voltage protection
• Anti-cycle timers for optimum compressor protection
Evaporator Fan
• Zero cross switching technology
• Fan delay function
• Smart evaporator fan management for energy saving
• Fan stop at high evaporator temperature
Alarms
• High and low temperature alarm
• Sensor failure alarm
• High and low voltage alarm
• Condenser cleaning alarm
• Door open alarm
• External alarm input Multi-purpose DI input
• Two Multipurpose DI input for defrost start
• Day/night control, main switch
• Reference displacement
• Continuous cycle control
Display & Programming
• Bigger and high efficient LED display
• Display temperatures in ‘C /’F
• Parameter settings/readouts and alarm conditions can be read on the display
Other functions
• Password protection
• Door function with alarm monitoring
• Delay of outputs at power up
• Keypad lock and unlock feature
• Galvanic Isolation