•
From the FG terminal at the rear side of GLC unit, please take grounding exclusively
[within ground resistance of 100
Ω
].
9
Precaution for Grounding
Please pay special attention to the following instructions when connecting the power
cable to the GLC unit.
•
If the supply voltage exceeds the GLC 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 GLC unit, please separate the input/output and operation
unit lines.
•
To increase the noise quality, simply twist the power cable before connecting it to the
GLC 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.
8
Precautions for Supplying Power
11
Replacing the Backlight
10
Precautions for Input/Output Signal Lines
•
Input and Output signal lines must be separated from the power control cables for op-
erational circuits.
•
if this is not possible, use a shielded cable and the shield should be grounded.
•
The backlight on this unit can be replaced.
For an explanation of how to replace it, please refer to the GLC300 Series User’s
Manual (sold separately) or the instruction manual which comes with replacement
backlights (sold separately).
Applicable backlight models
•
Using any backlight other than the applicable models shown above may cause
an accident or breakdown.
GP unit
Backlight model
GLC300-TC41-24V
GP577RT-BL00-MS
•
If this is not possible, use a shielded, grounded cable.
