Controllers for cooling applications 900323.001

Technical data

  • Housing dimension ST121 Front: 120x42mm
  • Power supply 230V AC
  • Switching inputs none
  • Number of outputs 2
  • Sensor type PTC
  • ST-Bus available Yes
  • Software 112

Product description

The cooling controller ST121-KD1KAR.112 with two sensor inputs and five keys is used for the thermostatic temperature control of refrigerating plants. It is supplied with 230V AC and has two exit relays. The functions of the outputs and special keys can be freely selected, thus various applications with only one controller are possible. The controller, for example, can operate with two coolers if the evaporator sensor is parametered as sensor for a second refrigerating chamber.
Networking of the controller takes place via the ST-Bus interface.

Wiring diagram

Dimensional drawing

Data sheet             Installation instructions

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