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Configuration - continued
Set plant type
1. Go to Configuration menu
2. Select plant type
Press the line Select plant type.
3. Set plant type
4. Set Common functions
AK-PC 783
Our example
The comments for the example are shown on the
following pages, in the middle column.
In our example we want the controller
to control an MT group, an LT group,
the condenser group and the cascade
heat exchanger. Therefore, we select
the Cascade plant type.
Subsequent options are then available,
but only those options allowed by the
current selection.
Select the refrigerant type, here R134a
and CO 2 , further options are made avail-
able, etc.
The settings for our example can be
viewed in the display.
Capacity controller RS8GN202 © Danfoss 11-2013
General
If you want to know more about the different
configuration options, they are listed in the right
column.
The number refers to the number and picture in
the column on the left.
As the screen only shows the settings and readings
that are required for a given setup, all possible set-
tings have also been included in the right column.
3 - Plant type
Application selection
Select Cascade control
4- Plant type continued
Refrigerant
Select refrigerant type
Refrigerant factors K1, K2, K3
Only used if "Po refrigerant type" is set to custom
(contact Danfoss for information)
MT = Medium temperature. LT = Low tempera-
ture
Condenser fan control
Select the controller is to control the conden-
ser. Set later.
Cold pump control
Select whether the controller should manage
pump circulated CO2.
MT/LT koordination
Select the controller is to make coordination
between MT and LT control management.
Oil management
Oil control enabled. To be adjusted later on.
HP control
High pressure control enabled. To be adjusted
later on.
Receiver control
Receiver control enabled. To be adjusted later
on.
Heat recovery
Heat recovery enabled. To be adjusted later on.
Select quick setup
You can reset all settings and return to factory
settings here.
External main switch
A switch may be connected for starting and
stopping the regulation.
Mon. Ext. Power loss (signal from an UPS)
Monitoring of external voltage. When selecting
"yes", a digital input is allocated.
Alarm output
Here you may set whether or not it should be
an alarm relay, and which priorities will activate
it.
I'm alive relay
A relay will "release" if the regulation is stop-
ped.
Night select via DI
Change to night-time operation at the signal
for a DI input.
57
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