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Installation instructions
1. Remove the unit from the packing box and inspect it for damage or imperfections. If any damage is found, do not
install the unit, but replace it carefully into the packing box and notify the ABB product support hotline in Australia on
1300 666 595.
2. If all looks okay, installation can proceed.
3. Use a pencil to mark the position of the mounting screw holes for the inverter and the battery pack in the gear tray.
Figure 1 describes the inverter pack dimensions.
236
Figure 1: Inverter pack Nexus dimensions; length 236mm, width 47mm, height 41mm
4. Fit the inverter and battery pack using suitably sized screws and nuts. Make sure that the battery pack is mounted as
far as possible from the ballast or from any other components that may get hot.
Wiring connections
Following below are the wiring connections to wire power pack as maintained, non-maintained and sustained. When
wiring power pack to a sustained fitting, the fitting must be programmed as sustained using utility tools. Ensure that the
stripped wire ends are completely inserted into the terminal block and no bare conductors are exposed to the metal.
1 x __ W maintained
Black
Red
LED
White
Test
switch
Data
LDRM
Ballast
Shield
Data
1 x __ W maintained
Black
Red
LED
White
Test
switch
Data
Shield
Data
Figure 2: Wiring diagram power pack Nexus using conventional magnetic ballast
Note: Wiring connections are different if using electronic or other magnetic ballast.
Data connections
Data cable connects via the 3-way strain relief plug (supplied with the power pack) to the data terminal as shown in figure
2.
Note: When correctly installed no fitting should have more than 2 data cables connected to it. If you have more than 2
data cables at any 1 fitting, the installation is incorrect. You will need to consult the Nexus user and technical guide.
Warning: No mains carrying cables are to be connected to the data terminals or cables.
47
Clip
LDR
Switched
active
FSU
Switched active
Unswitched active
Neutral
240Vac
Earth
50Hz
Unswitched active
Neutral
240Vac
Earth
50Hz
5. Light sensing clip (LDR) monitors mains on/off lamp condition and is to be affixed on the mains lamp/tube refer figure
2. Please note the light sensing clip (LDR) is not supplied for PL lamp power packs and the PL lamp power packs are
programmed as non-maintained (refer PL lamp warning on page 1).
6. Lamp operation;
− Maintained; once powered up, in a maintained fitting the normal AC lamp (if present) should light up and stay on until
the power supply fails. The emergency function of the unit should only operate when the unswitched active power
supply fails or when somebody presses the manual test button located on the fitting. The emergency function also
operates when the fitting receives a command from the Nexus controller to switch into emergency mode.
− Non-maintained; once powered up, in a non-maintained fitting the present lamp stays off. The emergency function of
the unit should only operate when the unswitched active power supply fails or when somebody presses the manual
test button located on the fitting. The emergency function also operates when the fitting receives a command from the
Nexus controller to switch into emergency mode.
7. When you first install the new power pack Nexus its LED will be flashing green. During different modes of operation the
LED status should be as following.
Flashing orange
Wink mode cable tracing is on. Valid messages are being received by the unit
Static orange
Wink mode cable tracing has been turned off
Static red
Unit has been commissioned and battery is charging
Flashing red
Unit is under test
Refer to the Nexus user and technical guide for detailed description of all possible LED states and their meanings.
8. Check the operation of the fitting to ensure that the installation was successful. When powered up, allow a few
minutes to give the battery a small charge, then press the manual test button located on the fitting. Press and hold
the test button for a few seconds and observe that the emergency lamp lights up and stays on, until the test switch
is released. If the lamp works only momentarily, this ensures that the connections are correct and the battery requires
at least 24 hours to fully charge. If the lamp does not work at all, check the supply, the connections and the trouble
shooting guide at the end of this document.
9. Once manually checked as per item 8 above, the fitting is ready to be communication tested and commissioned into
the Nexus network. Keep the information details of this fitting including exact location description, DB (distribution
board) and CB (circuit breaker) numbering, channel and router numbering, plan number and cross referencing
information as all this will be required for entry into the database during commissioning. Refer to the Nexus user and
technical guide for full details. As the installer, it is your responsibility to conduct the initial discharge testing of the
installed fitting. Refer to AS/NZS2293.
Removal instructions
1. Before removing the installed power pack Nexus, switch off the mains supply to the fitting.
2. Unscrew/unplug the unswitched active, switched active, neutral and output (lamp and ballast) wire connections from
the terminal block using a suitably sized screwdriver.
3. Undo the test switch nut and remove LED from the grommet.
4. Unscrew/unplug the data cable connection from the terminal block and remove sensing clip from the tube/lamp.
5. Disconnect the battery plug from the battery pack and then unscrew the mounting screws of the power pack Nexus.
6. When the fitting is reconnected to the supply, it will need time to recharge its battery before it will be capable of a full
length discharge again.
Note: When sending power packs Nexus for repair make sure that LED, test switch and light sensor are included with the
power pack.
Testing precautions
Once the fitting is permanently connected to the mains supply, a commissioning discharge test as required in
AS/NZS2293.2 must be carried out. You will need to allow 24 hours for the battery to fully charge prior to conducting
this test, presently (at the time of writing), the standard requires that fittings operate in emergency mode for a period not
less than 2 hours for their commissioning test and for not less than 90 minutes thereafter (it is required that 6 monthly
discharge tests be carried out). You will need to keep the records for the commissioning test and enter them into the
building emergency services logbook or via other recording methods as allowed by AS/NZ2293.2.
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