The Danfoss ACI analogue power controller is designed for very precise temperature and transformer control.
Due to the built-in micro-computer, the controller can operate in phase angle as well as in burst firing control method. The controller automatically adapts to the load to ensure a smooth inrush, and in burst-firing mode it will further eliminate the unwanted effects of DC magnetizing on transformers. The ACI unit is easily connected to a PLC/regulator by means of one of the selectable input signals.

• Accepts current loop, voltage and potentiometer control inputs
• Selectable phase angle and burst firing control method
• SCR power chip with LTE technology
• Compact modular design complete with heat sink
• DIN-rail mountable
• Built-in varistor protection
• Micro-computer controlled for high performance
• Built-in EMC filter
• LED status indicator

ACI, CI-tronic
Code number Type Line volt. @ 50/60 Hz Max. load [Amp]
037N0057 ACI 30-1 230 V 30 A
037N0058 ACI 50-1 230 V 50 A
037N0059 ACI 30-1 400 V 30 A
037N0060 ACI 50-1 400 V 50 A



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