AK-PC
572
User
Guide RS8KH202 © Danfoss 2019-03
17
Digital output
On/off outputs
Most outputs have been locked to a function. These are as follows:
1: MT compressor 1
2: MT compressor 2
3: MT compressor 3. If no MT3 compressor is connected, the output must be configured for
'None'. The output can then be used for an AUX1 function. The function can be configured in
the AUX menu.
4: External alarm unit
5: Solid state output. Reserved for a Bitzer CRII.
6: Solid state output. Reserved for a Bitzer CRII. If a Bitzer CRII is not connected, the output can
be used to manage an oil valve.
7: LT compressor 1
8: LT compressor 2
When the compressor is idle, there will be no voltage to the bypass valves. Voltage is connected
immediately before the compressor is started.
On
Off
Digital input
On/off inputs
Most inputs are locked to a function. These are as follows:
1: Signal from compressor 1 in the MT circuit. Once a signal is received, the compressor will
cut out. When monitoring an Sd temperature in a Bitzer CRII, the temperature signal must be
registered by an external thermostat that will then issue an on/off signal via the input.
2: Signal from compressor 2 in the MT circuit. Once a signal is received, the compressor will cut
out.
3: Signal from compressor 3 in the MT circuit. Once a signal is received, the compressor will cut
out. If not regulating with an MT3 compressor, the input can be used for an AUX1 function.
4: Signal from external main switch. Regulation starts when a signal is received.
5: Signal from the high pressure switch in the MT circuit. Once a signal is received, the circuit will
cut out.
6: Signal from the high pressure switch in the LT circuit. Once a signal is received, the circuit will
cut out.
7: Signal from compressor 1 in the LT circuit. Once a signal is received, the compressor will cut
out.
8: Signal from compressor 2 in the LT circuit. Once a signal is received, the compressor will cut
out.
The signal must be defined for each input. Should the function take effect when the input is Off
or when it is On
On
Off
Analog output
0-10 V
outputs
The outputs have been locked to the following functions:
1: Signal to the fans on the gas cooler
2: Not used
3: Signal for the speed controls in compressor 1 in the MT circuit
4: Signal for the speed controls in compressor 1 in the LT circuit
Analog input
Analogue inputs
The outputs have been locked to the following functions:
1: Pressure transmitter PoMT
2: Pressure transmitter PoLT
3: Pressure transmitter Pgc
4: Pressure transmitter Prec
5: Temperature sensor SsMT
6: Temperature sensor SdMT
7: Temperature sensor Sgc
8: Temperature sensor Sc3
Pressure signal:
Ratiometric
Temperature signal:
Pt 1000 ohm
Stepper outputs
Here you can set the valve type.
Choose between the following types: CCM10...40, CCMT2....42, CTR20, ETS6...400.
Choose user-defined if there is a different type of valve. All valve data must then be configured
directly in the valve module. The control unit MMIMYK can be used.
Fac: CCMT-2
I/O Status
Digital output
1:
.
8:
Status of on/off outputs
Here you can see if the function is on or off.
Digital input
1:
.
8:
Status of on/off inputs
Here you can see the status of the function/alarm.
Analog output
1:
3:
4:
Status of analogue outputs
Here you can see the size of the output signals as a % of max. signal.
