Danfoss BW10 020-090 Operation Instructions Manual page 5

NRCP2-BASE control board
J2A
J2B
J3
J4
The following table summarises the connections at the user terminal block.
Description
Contact 1: Start/stop
Contact 2: Heating/cooling selection
Contact 3: Demand limit selection 1
Customer safety loop input
Setpoint selection
Contact 3 bis: Demand limit selection
2
Control, evaporator water pump
Control, condenser water pump
Alarm relay output
Unit operation relay output
CCN network connection
Triac output for boiler command
3.6.2 - Volt-free contact on/off/cooling/heating
If the unit works in the remote operating mode (Remote) and
the automatic heating/cooling changeover function is not
selected and if the user configuration allows this (61WG or
30WG and Pro-Dialog interface selection) the operation of the
on/off and the heating/cooling contacts is as follows:
Without multiplexing
Off
On/off contact Open
Heaing/cooling contact -
With multiplexing
Off
On/off contact Open
Heaing/cooling contact Open
NOTE: The automatic changeover function (on auto)
selects the cooling or heating mode based on the outside
temperature (unit with outside temperature) - see chapter
5.2).
Connector/ Terminal Board
channel
J4/CH 8 32-33 NRCP2-BASE
J4/CH 9 63-64 NRCP2-BASE
J4/CH 10 73-74 NRCP2-BASE
J4/CH 11A 34-35 NRCP2-BASE
J5/CH 13 NRCP2-BASE
J5/CH 14 NRCP2-BASE
J2B/CH 18 NRCP2-BASE
J2B/CH 22 NRCP2-BASE
J3/CH 24 30A-31A NRCP2-BASE
J3/CH 25 37-38 NRCP2-BASE
J12 NRCP2-BASE
J2B/CH 20 NRCP2-BASE
On cooling On heating
Closed Closed
Open Closed
On cooling On heating On auto
Closed Closed Open
Open Closed Closed
J12
Remarks
Used with the remote operating mode (Remote).
Used with the remote operating mode (Remote).
Used with the remote operating mode (Remote), unit without NRCP2-SLAVE board.
Unit without NRCP2-SLAVE board.
-
-
-
This output can be used to use a well pump
RS-485 series connection
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
-
3.6.3 - Volt-free setpoint selection contact
Setpoint selection contact
3.6.4 - Volt-free demand limit selection contact
100%
Demand limit 1 Open
Demand limit 2 Open
Optional PD-AUX board
Cooling
csp 1 csp 2
Open Closed
Limit 1 Limit 2
Closed Open
Open Closed
J3
Heating
hsp 1 hsp 2
Open Closed
Limit 3
Closed
Closed
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