084B8522 Danfoss Refrigeration Controller, Type EKC 202B

Danfoss 084B8522 Refrigeration Appliance Control (TXV), Type EKC 202B

Application

• The controller is used for temperature control refrigeration appliances and cold rooms in supermarkets
• Control of defrosting, fans, alarm and light

Principle
The controller contains a temperature control where the signal can be received from one temperature sensor. The sensor is placed in the cold air flow after the evaporator or in the warm air flow just before the evaporator. The controller controls the defrost with either natural defrost or electric defrost. Renewed cutin after defrost can be accomplished
based on time or temperature. A measurement of the defrost temperature can be obtained directly through the use of a defrost sensor. Two to four relays will cut the required functions in and out – the application determines which:

• Refrigeration (compressor or solenoid valve)
• Defrost
• Fan
• Alarm
• Light

Advantages

• Integrated refrigeration-technical functions
• Defrost on-demand in 1:1 systems
• Buttons and seal imbedded in the front
• IP65 enclosure from the front panel
• Digital input for either:
  • Door contact function with alarm
  • Defrost start
  • Start/stop of regulation
  • Night operation
  • Change-over between two temperature reference
  • Case cleaning function
• Instant programming via programming key
• HACCP
  • Factory calibration that will guarantee a better measuring accuracy than stated in the standard EN ISO 23953-2 without subsequent calibration (Pt 1000 ohm sensor)