Danfoss AK-PC 651 User Manual page 23

User Guide | Capacity Controller, AK-PC 651
DI - High or low voltage Digital switch inputs, 4 pcs. DI1 - DI4
Terminal = DI1H, DI1, DI common ...
230 V signal: Connect to DI_H
24 V signal: Connect to DI_
The connection may be a shut-down or interruption function. Select
what is to be activated during configuration.
DI - Low voltage Digitale switch inputs , 14 pcs. DI5 - DI18
All are 24 V signal.
The capacity from the digital scroll compressor
The capacity is divided into period times as "PWM per". 100% capacity is delivered when cooling takes place for the whole period. An off
time is required by the bypass valve within the period and an on time is also permitted. There is "no cooling" when the valve is on.
The controller itself calculates the capacity needed and will then vary it according to the cut-in time of the capacity control valve.
A limit is introduced if low capacity is needed so that the cooling does not go below 10%. This is because the compressor can cool itself.
This value can be increased if necessary.
Refrigeration
No refrigeration
© Danfoss | ADAP-KOOL® | 2015.10
Connection, upper level
Period time
Min. Capacity
Only DO5 or DO6
RS8HA102 | 23