E-13
8
Grounding Cautions
•
When attaching a wire to the PS-G's rear face FG terminal, (on the Power
Input Terminal Block), be sure to create an exclusive ground.
*1
•
FG and SG terminals are internally connected in the PS-G. When connecting
to another device, be sure to create an SG shorting loop in your system.
*1 Use a grounding resistance of 100
Ω
, a wire of 2mm
2
or thicker, or your country's
applicable standard.
•
If the power supply voltage exceeds the PS-G unit's range, connect a
voltage transformer.
•
Between the line and the ground, be sure to use a low noise power sup-
ply. If there is still an excessive amount of noise, connect a noise reduc-
ing transformer.
•
Input and Output signal lines must be separated from the power control
cables for operational circuits.
•
To increase the noise resistance, be sure to twist the ends of the power
cord before connecting it to the PS-G unit.
•
The PS-G unit's power supply cord should not be bundled with or kept
close to main circuit lines (high voltage, high current), or input/output
signal lines.
•
Connect a surge absorber to handle power surges.
•
To reduce noise, make the power cord as short as possible.
7
Power Supply Cautions
Connecting the PS-G's Power Cord Terminals
When connecting the power cord, be sure to follow the procedures given below.
1. Confirm that the PS-G's power cord is unplugged from the power supply.
2. Use a screwdriver to remove the Power Input Terminal Block's clear plastic
cover.
3. Remove the screws from the middle three (3) terminals, align the Ring Termi-
nals and re-attach the screws.
4. Confirm that the wires are connected correctly.
5. Replace the Power Input Terminal Block's clear plastic cover.
Please pay special attention to the following instructions when connecting
the power cord terminals to the PS-G unit.
The torque required to tighten these screws is 0.5 to 0.6N•m.
