14
INSTALLATION GUIDE continued…
Electrical connection continued…
28. Mains power cable
(not supplied) should be flexible 3A rated (multi-strand) 2 core cable. Prepare
the cable for connection into the PCB by carefully stripping back the outer sheath by about 100mm. Strip
the wire ends back by about 5mm.
PCB connection:
the appropriate wires of the mains cable should connected to the appropriate termi-
nal on the block. The PCB is marked L1 for the live wire & N for the neutral wire. Earth connection is
not required.
IMPORTANT: Ensure terminal block screws are firmly tightened & clamp the wires securely.
lid screw
grommet for
sensor cable
lid
PCB
terminal block
for mains
connection
transformers with
thermal fuse
complies with
EN60950
lid seal
PSU case
grommet for
power cable
(bottom entry)
output voltage 6V
-complies with
IEE wiring regulations
safety extra low voltage
(SELV)
Use either socket connector for
grey sensor cable or link cable
mains supply (210 - 250 volt)
should be via an RCD
(max trip 30 mA)
and fused spur
(fused at 3 amp)
power cable not supplied
Note:
The 3 different PSUs
have different PCBs fitted. The
battery version has a single
socket connector. The mains
version shown here has a pair.
The link version has three.
(Some link PCBs have an extra Euro
connection – not used in the UK)
Shown above: Mains Power Supply Unit (PSU)
