Danfoss AK-PC 351 - Menu Options; Start;Stop and Configuration Parameters; Mains Frequency and Alarm Output; Suction Group Settings

8 User Guide RS8GZ302 © Danfoss 2015-06 AK-PC 351
Start/stop
Main switch Main switch
Start and stop regulating here.
The conguration settings will require that regulating is stopped.
If you try to enter a conguration setting when regulating has started, the controller will
ask if regulating should be stopped.
When all settings have been made and the main switch is set to “ON”, the controller will
enable the display of the various measurements. Regulation will start. (If an external main
switch has been dened, it must also be “ON” before regulating starts.)
On / O
Extern Main swich External main switch
On DI6 an external switch can be connected which can be used to start and stop regulating.
If a switch is not connected, the input must be shorted.
Both the internal and external main switch must be ON before regulating starts.
Plant type
Select Plant type Plant settings:
The following must be regulated:
• Compressor group
• Condenser group
• One compressor group + One condenser group
Fac: None
Refrigerant type Refrigerant setting
Before refrigeration is started, the refrigerant must be dened. You may choose between
the following refrigerants:
R12, R22, R134a, R502, R717, R13, R13b1, R23, R500, R503, R114, R142b, user dened,
R32, R227, R401A, R507, R402A, R404A, R407C, R407A, R407B, R410A, R170, R290, R600,
R600a, R744, R1270, R417A, R422A, R413A, R422D, R427A, R438A, R513A (XP10), R407F.
Warning: Wrong selection of refrigerant may cause damage to the compressor.
Other refrigerants: Here Setting "user dened" is selected and then three factors - fac1, fac2
and fac3 and temperature glide (if necessary).
Fac: None
Unit of setpoints Dene reference settings and readings for saturation temperature or pressure
Select pressure or saturation temperature.
(Can be set during initial set-up and must not be subsequently changed.)
Temp. / press
Fac: Saturated
Mains frequency Frequency
Set the net frequency
50 Hz / 60 Hz
Fac: 50 Hz
Alarm output Alarm relay
Dene an alarm relay here that will be activated in the event of an alarm.
1. Select the alarm priority that will activate the relay
• No relay
• Critical alarms
• Critical and serious alarms
• All alarms
Select whether the relay will be active (pulled) when the alarm is ON, or when it is OFF.
(If all relays are used to start/stop compressors and condenser fans, it will not be possible to
use an alarm relay.)
DO-demand
Fac: No relay
Suction
Control status Regulation status
Control status Read the status of the control circuit here e.g.:
No comp=no capacity available (error). Normal=regulation. Alarm comp=alarm situa-
tion where the compressor not starts. ON timer=await timer function. Start timer= await
timer function. Normal ctrl=regulation in neutral zone. Inj. ON delay=await time delay,
Cascade=slave or master. 1st comp. del=await rst compressor timer. Pump down=suction
down until the set limit before compressor stops. Sensor error=emergency cooling due to
defective signal. Load shed=power limitation function is active. Sd High=temperature moni-
toring eect the regulation. Pc High= temperature monitoring eect the regulation. Manual
ctrl=manuel operation. Main switch o=regulation stops.
Actuel zone You will be able to see how the regulation is in relation to the reference here:
P0 error: No regulation
- Zone: The desired pressure is below the neutral zone
NZ: The pressure is in the neutral zone
+ Zone: The desired pressure is above the neutral zone
Control temp. /
Control pres.
The current value of the regulation sensor can be read here
Reference The total regulation reference can be read here
Running capacity Here the connected capacity can be read as a % of total capacity
Requested capacity Here the preferred connected capacity can be read as a % of total capacity
Menu
SW: 1.1x