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AR2-28

Versatile Split Defrost Controller with RTC – 107x95x47mm

Main features
• Up to 6 real time defrosts
• Synchronized defrost start and termination with master-slave connection
• Selectable NTC10K or PTC input
• FLEXICOLD function for energy saving or alternative setpoint
• Optional control of a second compressor or evaporator
• Excellent evaporator fan control
• Absolute or relative temperature alarms, door open alarm, condenser high temperature/pressure alarm
• Light and standby control (On/Off)
• Quick programming through ZOT-AR2
• Connection to LAE supervisory systems 
• Available display unit: LCD-5S or RU33

Applications:
Cold stores, control panels, upright refrigerators, plug-in and supermarket display cases, and all those plants where real time defrost starts are needed.

Technical Data
AR2-28
Range: -50÷120°C, -55÷240°F
Resolution: 0.1/1°C; 1°F
Precision:
  NTC10K: <±0.3°C (-40.0÷70.0°C)
  PTC1000: <±0.5°C (-50÷120°C) 
Sensor type:
  NTC10K standard mod. SN4K20P1/P2/P3 or
  PTC1000 standard mod. ST1K20P1/P2/P3
Rechargeable battery: >150 hours
Power supply: 230V~ ±10%  50÷60Hz  3W

RU33 display unit
Dimensions: 169x38x25 mm (WxHxD)
Panel cut-out: 163×31.5 mm
Front protection: IP55