Safety Function - Danfoss AK-PC 560 User Manual

Safety function

Criterion
P0 < P0 min (A11)
P0 signal failure (P0 reading < 5%)
Pc > Pc max. minus 3 K
(The "HP" LED on EKA 165 lights up)
Pc > Pc max. (A30)
Pc signal failure (Pc reading < 5%)
Sc3 signal failure (Variable reference (r33) is
set to 2 or 4)
Saux > Saux Al Lim.
Exercising fans
On the setting c29 = 1-8 the last fans will hardly be activated during the winter.
To ensure that the fans are 'exercised' a test will be carried out every 24 hours to check whether all relays have been in operation.
The relays that have not been used will now be activated for 30 seconds, but with a pause of one hour between individual relays.
20
Compressor control
0% capacity. (Min ON time (c01) overrid-
den)
Calculated average capacity
The capacity changes to 2/3 of the actual
capacity. After 30 seconds it changes to
half capacity.
After a further 30 seconds there is a full
cut-out.
0% capacity
No change
No change
Compressor cut out
Manual RS8GE202 © Danfoss 01-2016
Condenser control
No change
No change.
100% capacity
100% capacity
100% capacity
The variable part is omitted.
Reference (r29) = Setting (r28)
No changes
AK-PC 560