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SECTION 2
2.7 CONNECTING PCM-500I FOR 208 VAC IN-
PUT
ELECTRIC SHOCK CAN KILL! Precautionary mea-
sures should be taken to provide maximum protec-
tion against electrical shock. Be sure that all power
is off by opening the line (wall) disconnect switch
and by unplugging the power cord to the unit when
reconnecting for 208 Vac input.
The PCM-500i power source with 208/230 vac, 1-phase
input capability is factory set for 230 vac input. If using
208 vac input, the PCM-500i must be reconnected as
follows before connecting to your input power.
Fig. 1
INPUT BRIDGE
Figure 2.2. Original Factory Setup for 230 Vac Input on
Power Source with 208/230 Vac Input Power Capability
1. Remove cover from the PCM-500i power source.
2. Locate the input bridge (IBR) and the two-position
terminal block on the left side of the unit towards the
rear panel (see Fig. 1). Locate the gray wire con-
nected to TB5-2 and to IBR terminal "R". For 108
Vac input, disconnect the gray wire from TB5-2 and
then firmly connect it to TB5-1.
3. Locate the output bridge (D1) on the left side to-
wards the front panel (see fig. 2). Disconnect and
swap leads X2 and X3 from the main transformer.
For 208 Vac input, X2 is connected to TB3 and X3
is connected to terminal 3 of D1. Make sure the
connections are firmly tightened.
4. Leave all other wires the same.
5. Reinstall cover and connect the PCM-500i to the
208vac input power.
+
~
OUTPUT
~
BRIDGE
D1
INSTALLATION
Fig. 2
13
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