Danfoss AK-PC 420 User Manual page 11

Manuel operation (only via display and only when regulation has stopped
(r12=off))
From this menu the relays can be cut in and out manually. 0 gives no override, but a
number between 1 and 10 will cut in a belonging relay. 1 will cut in relay number 1, 2
relay 2, etc.
11-18 will produce voltage on the analog output. Setting 11 will give a voltage of
1.25 V, setting 12 will give 2.5 V, etc.
Frequency
Set the net frequency.
Use of S8 sensor
If application (o61) is selected to 1, 2, 3 or 4, the S8 sensor can be used for regulation
or for monitoring.
The S8 sensor, which has to be located near by the outlet of the dry cooler, should be
used in the regulation if the distance between the dry cooler and the 3-way-valve is
long. If the S8 sensor is want to be used in the regulation set o96 to ON. Is the S8 sen-
sor not used in the regulation it can be located optional for monitoring purpose (o96
has to be set to OFF).
Address
If the controller is built into a network with data communication, it must have an
address, and the master gateway of the data communication must then know this
address.
These settings can only be made when a data communication module has been
mounted in the controller and the installation of the data communication cable has
been completed.
This installation is mentioned in a separate document "RC8AC".
The address is set between 1 and 240 (gateway determined)
The address is sent to the gateway when the menu is set in pos. ON
Access code
If the settings in the controller are to be protected by a numerical code, you can set a
numerical value between 0 and 100. If not, you can cancel the function with setting
OFF.
Status on relay outputs
Status on relay 1 (fan 1 or start/stop of speed control)
Status on relay 2 (fan 2)
Status on relay 3 (fan 3)
Status on relay 4 (fan 4)
Status on relay 5 (fan 5)
Status on relay 6 (fan 6)
Status on relay 7 (pump 1)
Status on relay 8 (pump 2)
Status on relay 9 (Heat recovery)
Status on relay 10 (alarm)
Pump control
Here you define how the pumps are to be controlled:
0: Both pumps are stopped
1: Only pump 1 is started
2: Only pump 2 is started
3: Both pump 1 and pump 2 are started
4: Automatic switch between pumps 1 and 2. Start before stop
5: Automatic switch between pumps 1 and 2. Stop before start
Pump-stop delay
During pump switching both pumps can run for a short overlap. Here you set how
many seconds.
Run period in cyclic operation
This is where you set the number of hours the pump will run. You then switch over to
the other pump. Repeat this.
Status on DI 1
Status on DI 2
Reading temperature at Sc3 sensor
Status on DI 3
Status on DI 4
Status on DI 5
Reading temperature at S8 sensor
Status on Flow switch input
Read off the actual reference displacement received in the analogue input Ext. Ref.
Read off the value on the analogue output to the valve/frequency converter.
Reading temperature at S7 sensor
AK-PC 420 Manual RS8EL402 © Danfoss 03-2010
o18 - - -
o12 50 / 60 Hz
(50=0, 60=1)
o96 S8 optional
Following installation of a data com-
munication module, the controller can
be operated on a par with the other
controllers in ADAP-KOOL® refrigera-
tion controls.
o03
o04
o05
p25 Fan 1 status
p26 Fan 2 status
p27 Fan 3 status
p28 Fan 4 status
p29 Fan 5 status
p30 Fan 6 status
p31 Pump 1
p32 Pump 2
p33 Heat recovery
p34 Alarm
p35 Pump ctrl.
p36 Pump del.
p37 Pump cycle
u10 DI 1 Status
u37 DI 2 Status
u44 Sc3 Status
u87 DI 3 Status
u88 HP safety
u89 Heat recov.
u93 S8 temp
u94 Flow switch
u96 Ext. Ref°C
u97 AO Volt
u98 S7 temp
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