AK-PC 781A Capacity controller RS8HE202 © Danfoss 2017-07 63
Configuration - continued
Continued
Control type
Choice of control strategy
P-band: The fan capacity is regulated via P-band control. The
P band is configured as "Proportional band Xp"
PI-Control: The fan capacity is regulated by the PI controller.
Kp
Amplification factor for P/PI controller
Tn
Integration time for PI controller
Capacity limit at night
Setting of maximum capacity limit during night operations.
Can be used to limit fan speed at night in order to limit the
noise level.
The following settings are not available when the refrigerant
selected is CO2.
Monitor Air flow
Choose whether monitoring is required of the condenser's
air flow via an intelligent error-detection method.
Monitoring requires the use of a Sc3 outer temperature sen-
sor, which must be fitted by the condenser's air inlet.
FDD setting
Set error-detection function
Tuning: The controller makes an adjustment to the con-
denser concerned. Note that tuning should only be done
when the condenser is operating under normal operating
conditions.
ON: Tuning is completed and monitoring has commenced.
OFF: Monitoring is cut out.
FDD sensitivity
Set the sensitivity of error-detection on the condenser’s air
flow. Must only be changed by trained staff.
Air flow tuning value
Actual tuning values for air flow.
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