For data communication:
• Terminal 83 = B-
• Terminal 84 = A+
• Terminal 85 = screen
• AKV valve section A:
Connection of expansion valve type AKV, AKVA, AKVH or AKVP.
The coil must be a 230 V or 115 V AC coil
• Alarm:
There is a connection between terminal 10 and 12 in alarm situations and when the controller is without power.
DO2 has reinforced insulation that can be used with 24 V.
• Rail heat:
There is connection between terminal 10 and 11 when the function is on.
• Rail heat, AKV valve section B:
There is connection between terminal 13 and 14 when the function must be active.
The coil must be a 230 V or 115 V AC coil. Max. 0.5 A
• Defrost section A, Rail heat, Humidity:
There is connection between terminal 15 and 16 when the function is on.
• Light:
There is connection between terminal 18 and 20 when the function must be active.
• Fan:
There is connection between terminal 21 and 22 when the fan is on.
• Defrost section B, AKV valve section C, Heat function:
There is connection between terminal 23 and 24 when the function is on.
The coil must be a 230 V or 115 V AC coil. Max. 0.5 A
Digital input signal
The signal must have a voltage of 0 / 230 V AC (115 V AC). The function is dened in o84.
Display (RJ12 plug)
If external readings/operation of the controller is required, a display can be connected. For one display the max.
cable length is 100 m. For two displays the sum of the two cable lengths must not exceed 100 m.
Electric noise
Cables for sensors, low voltage DI inputs and data communication must be kept separate from other high voltage
cables:
• Use separate cable trays
• Keep a distance between cables of at least 10 cm
• Long cables at the low voltage DI input should be avoided
Installation considerations
Accidental damage, poor installation, or site conditions, can give rise to malfunctions of the control system, and
ultimately lead to a plant breakdown.
Every possible safeguard is incorporated into our products to prevent this. However, a wrong installation could still
present problems. Electronic controls are no substitute for normal, good engineering practice.
Danfoss will not be responsible for any goods, or plant components, damaged as a result of the above defects. It is
the installer's responsibility to check the installation thoroughly, and to t the necessary safety devices.
Special reference is made to the necessity of signals to the controller when the compressor is stopped and to the
need of liquid receivers before the compressors.
Your local Danfoss agent will be pleased to assist with further advice, etc.
AK-CC55 Multi Coil
© Danfoss | Climate Solutions | 2022.08 BC365022028193en-000201 | 28
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