Figure 9 - Psu Board Mains Voltage Range Setting - Siemens TC12 Installation, Commissioning And Maintenance Handbook

The Power supply fitted to every PSU board used in the system (part number
667/7/22631/000, manufactured by Daren Electronics PLC type PP40-30). An
internal link in this power supply needs to be set for the nominal mains voltage.
See Figure 9 for link setting; set to 110 V position for 98 V to 132 V mains voltage
range, set to 240 V for 198 V to 264 V mains voltage range.

Figure 9 - PSU Board Mains Voltage Range Setting

Low Voltage
Connections
1. Make sure that the PSU PCB is not plugged into the Mains Supply.
2. Disconnect the low voltage and Mains connectors from the PSU.
3. Remove the four screws that attach the PSU to the PCB.
4. Remove the cover from the PSU by removing a further four screws.
5. Set the Mains voltage link inside the PSU to the required position:
6. Replace the cover and screw the PSU back on to the PCB.
Ensure that the PCB is fitted the correct way around i.e. the Mains
connector and low voltage connector are at the correct ends of the PCB.
7. Re-connect the two PSU connectors
2.2.4.2 Modem PCB and Modem power cable
Figure 9 shows the position of the switches and connectors on the Modem PCB.
Ensure that the correct variant has been supplied e.g.
666/1/02243/000 for the UK.
666/1/02243/000 or 666/1/02243/001 for non-UK (the /001 variant includes extra
components; metal oxide varistors and gas discharge tubes, for surge protection).
The switches on the Modem PCB should be set as follows:
Note: The tables referred to below contain 0's to indicate open switches and 1's
to indicate closed switches. For all the switches push the switch down to
the left for a 0 and down to the right for a 1. The 0 and 1 position is shown
on the silkscreen underneath switch SW7.
666/HE/43100/000
TC12 Installation, Commissioning & Maintenance Handbook
Setting the Voltage Range of the PSU
PSU
110 V or 240 V, as shown in Figure 9.
Page 27
240V
110V
Connections
Mains
Issue 10