P/N PM000223A • Rev. 1 • ISS 9 August 2017
74
Installation Manual
NU-Series Hardware
Room Modules
2 of 3
P/N PM000192A • Rev.
.0 • ISS 23JUN2017
To mount a spacer to a wall:
1. Place the spacer against a flat wall and orient it so that
“TOP” (printed on the inside of the spacer) is pointing up
and that the spacer is level. Use a leveling device to check,
if necessary.
2. Using the spacer as a template, mark two holes for the
screws using the outer fitting holes located in the corners
of the spacer.
3. Remove the spacer and drill screw holes for the screws
that will be used, such as wood, concrete, or drywall
screws, or screws with anchors.
4. Remove the knock outs in the spacer for the cable wires.
5. Place the spacer over the holes, insert the screws, and then
tighten.
6. Pull the cables though the knock out holes.
Light Switching Relay Maximum Load and Surge Damping
Diode
The Customizable Bedside Module includes two light
switching circuits. Each circuit is suitable for switching a bi-
stable 24 volt DC relay. The maximum switching current for
each relay must not exceed 0.2A at max. 30VDC. External
surge damping diodes are needed to protect the switching
relays on the NUBM3 module.
An external power source and external relay are needed for
the light switching function. The diode, power supply, and
external relay are all provided by the installer.
Light switching relay with surge damping diode
Legend
(1) Bedside module
(2) To bed light
(3) To room light
(4) Light switching relay power supply
(5) External relay with protection diode
To make the connections to the module:
1. Pull the cables from the backbox or spacer, and then
slide them though the module’s frame.
Note:
When attaching RJ-45 connectors to the module, use
caution not to strain the connectors. If the cables are too
stiff to fit in the backbox, remove up to 15cm (6in.) of the
cable(s) jacket.
2. Set the DIP Switch to the correct room bus address
(0...3).
Legend
(1) DIP switches for bus addressing
(2) 4-pole connection for light control
(3) 6-pole connection to the NUBM3X extension module
(4) 2x RJ-45 connections to room bus
3. If you are including light control in your room
installation, attach the 4-pole connector cable for the
light switching relays to the 4-pin terminal. Ensure the
connector is seated properly on the pins.
4. If you are connecting an NUBM3X bedside extension
module to this bedside module, attach the 6-pole
interconnection cable included with the NUBM3X
Extension module to the 6-pin terminal.
