Siemens TC12 - page 79

TC12 Installation, Commissioning & Maintenance Handbook

The GRX handset command (see section 3.3.3.8) must be used together with the

above jumper positions in order to activate the desired communications interface.

3.2.3 Connectors and C

3.2.3.1 PSU Cable - OTU and Detectors

Connect the PSU ca (part number 66 /000) to the Outstation PCB.

This cable connects from the power supply to the 14-way connector, PL3 on the

PCB.

2 wires from the Mol connector at the sed to connect to the detectors.

The Brown wire is +24 V and the Blue wire is the 0 V. These connect to the first

detector nearest to the power supply. Additional detectors are supplied with 24 V

by 'daisy chaining' wires from the first detector.

NOTE. Do not connect/disconnect the cable whilst the power is switched on.

3.2.3.2 Mains Cable

The mains cable (part number 508/4/27193/

distribution panel of the traffic controller. o separate on/off switch on the

Outstation.

3.2.3.3 Telephone Cable th 6-way Plug

The OTU comes fitted with a telephone cable terminated in a 6 way telecom plug.

Connect the telephone plug to the telephone socket in the traffic control

equipment.

[For information only - the other end of the telephone cable attaches to SK4 on the

PCB underneath the er. Connection ork termination unit uses either

2 or 4 wires. The wi lours/functions d 4 wire cases are shown in

Figure 24].

Note The cable should never be disconnected from the PCB Socket (SK4)

whilst the other end is connected to the telephone network (via the

network termination unit). In order to prevent the cable being

disconnect rom the PCB b , the release lever on the 6-

way plug that connects to Socket SK4 is cut off. The top PCB cover

also fits ar d the

Ferrite Core ice

ables

ble 7/1/22690

ex PSU are u

000) should be wired into the mains

There is n

cov at the netw

for the 2 anre co

ed f y accident

oun end of the plug.

The telephone cable comes fitted with a ferrite core (the cable is passed tw

through the core (part number 905/4/10615/000), close to the PCB end of th

cable).

666/HE/43100/000 Page 69 Issue 9