Setup Control Of Receiver Pressure - Danfoss AK-PC 772A User Manual

Capacity controller for adap-kool small co2 refrigeration system
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Configuration - continued
Setup control of receiver
pressure
1. Go to Configuration menu
2. Select Receiver control
3. Set regulation values
64
The settings are shown here in
the display
Capacity controller RS8HF102 © Danfoss 2017-07
3 - Receiver control
Vrec output type
Select the signal type for controlling the gas bypass valve:
- Voltage signal
- Stepper motor signal via AK-XM 208C
- 2 stepper motor signal for parallel valves
Vrec min. OD
Limitation of the Vrec valve's degree of closing
Vrec max. OD
Limitation of the Vrec valve's degree of opening.
Show Trec
Set whether Trec should be shown in overview display 1.
Prec set point
Select the set point for the pressure in the receiver when IT
compressor is stopped
Kp
Amplification factor
Tn
Integration time
Prec min.
Min. permissible pressure in the receiver
Prec max.
Max. permissible pressure in the receiver
(Also becomes regulation reference if the compressors are
stopped with the "External compressor stop" function)
Prec min. limit P-band
P-band under "Prec min" where the ICMTS valve's degree of
opening is increased
Prec max. limit P-band
P-band over "Prec max" where the ICMTS valve's degree of
opening is decreased
Monitor liquid level
Choose whether liquid level should be monitored
Liquid alarm delay
Time delay for the alarm
Use hot gas dump
Select whether hot gas should be supplied if the receiver
pressure falls too low
Prec hot gas dump
Receiver pressure at which hot gas is turned on
Prec gas dump diff.
Difference at which hot gas is turned off again.
Show advanced settings
IT Comp. start
Opening degree for the Vrec valve when the IT compressor
is to start.
IT Comp. delay
The opening degree of the Vrec must be higher during the
entire delay time before the relay pulls, thereby sending a
signal to the IT controller.
IT End delay
The duration the IT compressor must have been stopped
before regulation is transferred to Vrec
IT Comp. Sgc min.
The temperature limit for operation with IT compressor. Will
not start when a lower value is detected, regardless of the
opening degree of the Vrec valve.
AK-PC 772A

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