TC12 Installation, Commissioning & Maintenance Handbook
Setting the Voltage Range of the PSU
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
Co Ma
nne s
ins
ction
240V
110V
PSU
1 CB is plu d in the ins ppl
2. Disconnect the low voltage and Mains connectors from the PSU.
3. Remove the four screws that attach the PSU to the PCB.
4. Rem m the PSU rem ing urth fou rew
5. Set the Mains voltage link inside PS to th equ d p ion
r 240 V, as shown in Figure 9.
6. Re screw the U k o th CB.
tted 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
2.2.4.2 Modem
Figure 9 shows the position of the swit odem 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.
. Make sure that the PSU P not gge to Ma Su y.
ove the cover fro by
the ov
U a f
e r er
ire r sc
osit s.
:
110 V o
place the cover and PS bac n to e P
Ensure that the PCB is fi
connectors
PCB and Modem power cable
es and connectors on the Mch
666/HE/43100/000 Page 27 Issue 9