Danfoss BW10 020-090, Operation Instructions Manual

Page: 5 / 24

5
Description Connector/
channel Terminal Board Remarks
Contact 1: Start/stop J4/CH 8 32-33 NRCP2-BASE Used with the remote operating mode (Remote).
Contact 2: Heating/cooling selection J4/CH 9 63-64 NRCP2-BASE Used with the remote operating mode (Remote).
Contact 3: Demand limit selection 1 J4/CH 10 73-74 NRCP2-BASE
Customer safety loop input J4/CH 11A 34-35 NRCP2-BASE
Setpoint selection J5/CH 13 NRCP2-BASE Used with the remote operating mode (Remote), unit without NRCP2-SLAVE board.
Contact 3 bis: Demand limit selection
2 J5/CH 14 NRCP2-BASE Unit without NRCP2-SLAVE board.
Control, evaporator water pump J2B/CH 18 NRCP2-BASE -
Control, condenser water pump J2B/CH 22 NRCP2-BASE -
Alarm relay output J3/CH 24 30A-31A NRCP2-BASE -
Unit operation relay output J3/CH 25 37-38 NRCP2-BASE This output can be used to use a well pump
CCN network connection J12 NRCP2-BASE RS-485 series connection
- Pin 1:
- Pin 2: ground
- Pin 3: signal -
Triac output for boiler command J2B/CH 20 NRCP2-BASE -
The following table summarises the connections at the user terminal block.
NRCP2-BASE control board Optional PD-AUX board
J2A
J2B
J3
J4
J12
J3
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 cooling On heating
On/off contact Open Closed Closed
Heaing/cooling contact - Open Closed
With multiplexing
Off On cooling On heating On auto
On/off contact Open Closed Closed Open
Heaing/cooling contact Open Open Closed Closed
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).
3.6.3 - Volt-free setpoint selection contact
Cooling Heating
csp 1 csp 2 hsp 1 hsp 2
Setpoint selection contact Open Closed Open Closed
3.6.4 - Volt-free demand limit selection contact
100% Limit 1 Limit 2 Limit 3
Demand limit 1 Open Closed Open Closed
Demand limit 2 Open Open Closed Closed