• From the FG terminal at the rear side of GP unit, please take grounding exclu-
sively [within ground resistance of 100 W].
9
Precaution for Grounding
10
Precautions for Input/Output Signal Lines
• Input and Output signal lines must be separated from the power control cables for
operational circuits.
• If this is not possible, use a shielded cable and the shield should be grounded.
Connect the power cable following the steps below.
1. Check to make sure the Power is Off.
2. With a plus screwdriver, remove the cover on the Power Input Terminal Block.
3. Disconnect the screws from the 3 terminals to be used, align the wire rings and
re-insert the screws.
(Please make sure the connection of the wires are correct.)
•
The torque necessary for fastening the screws is between 0.5-0.6N
•
m.
Please pay special attention to the following instructions when connecting the
power cable to the GP unit.
• If the supply voltage exceeds the GP unit range, connect a voltage transformer.
• For between the line and ground, select a power supply that is low in noise. If
there is an excess amount of noise, connect a noise reducing transformer.
• When supplying power to the GP unit, please separate the input/output and opera-
tion unit lines.
• To increase the noise quality, simply twist the power cable before connecting it
to the GP unit.
• The power supply cable must not be bundled or kept close to main circuit lines
(high voltage, high current), or input/output signal lines.
• Connect a surge absorber to deal with power surges.
• To reduce noise, make the power cable as short as possible.
• After turning this unit OFF, be sure to wait a few seconds before turning ON
again. If the unit is started within a few seconds, it may not start up correctly.
8
Precautions for Supplying Power
