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: -50120C, -55240F
Resolution: 0.1/1C; 1F
Precision:
  NTC10K: <0.3C (-40.070.0C)
  PTC1000: <0.5C (-50120C)
Sensor type:
  NTC10K standard mod. SN4B20P1/P2/P3 or
  PTC1000 standard mod. ST1K20P1/P2/P3
Rechargeable battery: >150 hours
Power supply: 230V~ 10%  5060Hz  3W

RU33 display unit
Dimensions: 169x38x25 mm (WxHxD)
Panel cut-out: 163x31.5 mm
Front protection: IP55


Versatile Split Defrost Controller with RTC - 107x95x47mm - LAE ELECTRONIC