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Wiring Section 5-3
Note 1. Be sure not to reverse the positive and negative leads when wiring the
power supply terminals.
2. Supply power to all of the Power Supply Units from the same source.
3. Do not remove the protective label from the top of the Unit until wiring has
been completed. This label prevents wire strands and other foreign matter
from entering the Unit during wiring procedures.
4. Do not forget to remove the label from the top of the Power Supply Unit af-
ter wiring the Unit. The label will block air circulation needed for cooling.
Grounding
The diagram below shows the location of the ground and line ground termi-
nals.
• To help prevent electrical shock, ground the ground terminal (GR: ) with
a ground resistance of less than 100
Ω using a 14-gauge wire (minimum
cross-sectional area of 2 mm
2
).
• The line ground terminal (LG: ) is a noise-filtered neutral terminal. If
noise is a significant source of errors or electrical shocks are a problem,
connect the line ground terminal to the ground terminal and ground both
with a ground resistance of less than 100
Ω.
• The ground wire should not be more than 20 m long.
• The following grounding configurations are acceptable.
LG (Noise-filter neutral terminal)
Ground this terminal to less than
100
Ω to improve noise resistance
and prevent electric shock.
GR (Ground terminal)
Ground this terminal to less than
100
Ω to prevent electric shock.
POWER
PA205R
DC24V
AC240V
OUTPUT
RUN
INPUT
AC100-240V
L2/N
L1
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