Danfoss ADAP-KOOL AK-PC 783 Design Manual page 118

Capacity controller with cascade control, refrigeration control systems
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Display of suction pressure and condensing pressure
One to four separate displays can be connected to the controller.
Connection is accomplished by means of wires with plug
connections. The display may be placed in a control box front, for
example.
When a display is connected, it will show the value for what is indi-
cated in the setup. It can be:
compressors control sensor
MT-regulation temperature
T0-MT in temperature
P0-MT in bar
T0-LT in temperature
P0-LT in bar
S4-MT
Ss-MT
Sd-MT
Ss-LT
Sd-LT
Cond. control sensor
Tc-MT in temperature
Tc-MT in bar
Tc-LT in temperature
Tc-LT in bar
S7
Display
Primary readout *
A
Control sensor suction pressure, MT
B
Control sensor condenser
C
Ss-MT
D
Sd-MT
* The primary reading can be changed to other measurements, if required.
When (on plug A) a display with control buttons is chosen, a sim-
ple operation via a menu system can be performed in addition to
the display of suction pressure and condensing pressure:
No.
Function
o59
Capacity setting for suction group in MT circuit
0: MAN, 1: OFF, 2: AUTO
o60
Manual setting of suction capacity in MT circuit
o93
Lock of configuration
It is only possible to select a predefined configuration or change refrigerant when the
configuration lock is open.
0 = Configuration open
1 = Configuration locked
P62
Manual setting of suction capacity in LT circuit
P63
Setting of "Control mode cond" in LT circuit
r23
Setting of Set Point for P0 in MT circuit
r24
Readout of the total P0 reference in MT circuit
r12
Main switch
0: Controller stopped
1: Regulating
r28
Set point condenser
Setting of required condenser pressure in °C
r29
Condenser reference
Actual reference for temperature for condenser capacity
r57
Readout of T0-MT
r90
Readout of T0-LT
r91
Readout of the total P0 Reference in LT circuit
r92
Setting of Setpoint for P0 in LT circuit
u16
Actual media temperature measured with S4
u21
Superheat in suction line MT circuit
u44
Sc3 out door temperature in °C
118
Secondary readout
Control sensor condenser
Control sensor suction pres-
sure
None
None
Capacity controller RS8GN202 © Danfoss 11-2013
u48
Actual regulation status on condenser
0: Power up
1: Stopped
2: Manuel
3: Alarm
4: Restart
5: Standby
6: Unloaded
7-9: Part loaded
10: Full loaded
11: Running
u49
Cut in condenser capacity in %
u50
Reference for condenser capacity in %
u51
Actual regulation status on suction group MT circuit
0: Power up
1: Stopped
2: Manuel
3: Alarm
4: Restart
5: Standby
6-10: Status_RUN_Timer
11: Unloaded
12-14: Unloads cut-in
15: Full loaded
16: Running
u52
Cut in compressor capacity in % MT circuit
u53
Reference for compressor capacity in MT circuit
u54
Sd discharge gas temperature in °C MT circuit
u55
Ss Suction gas temperature in °C MT circuit
u98
Actual temperature for S7 media sensor
u99
---
U01
Actual Pc condensing pressure in °C MT circuit
U46
Readout of "Req. Comp. Cap.A%" LT circuit
U47
Readout of "Comp.Cap %" LT circuit
U48
Readout of "Suction status" LT circuit
U49
Readout of "Tc" in LT circuit
U50
Readout of "Ss" in LT circuit
U51
Readout of "Sd" in LT circuit
U52
Readout of "Sh" in LT circuit
U53
Readout of "S4" in LT circuit
o44
Manual setting of the valves opening degree permitted
o45
Manual setting of the valves opening degree in %
o57
Capacity settings for condenser
0: MAN, 1: OFF, 2: AUTO
058
Manual setting of condenser capacity
AL1
Alarm suction pressure
AL2
Alarm condenser
- - 1
Initiation, Display is connected to output "A"
- - 2
Initiation, Display is connected to output "B" etc.
If you want to see one of the values for what is given under "func-
tion" you should use the buttons in the following way:
1. Press on the upper button until a parameter is shown
2.Press on the upper or lower button and find the parameter you
want to read
3. Press on the middle button until the value of the parameter is
displayed.
After a short time, the display will return automatically to the
"Read out display".
AK-PC 783

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