-28-
• When attaching a wire to the GLC's rear face FG terminal, (on the Power Input
Terminal Block), be sure to create an exclusive ground.
• Inside the GLC2300-LG41-24V/GLC2300-TC41-24V units, the SG(Signal Ground)
and FG(Frame Ground) terminals are connected to each other.
• When connecting the SG line to another device, be sure that the design of the sys-
tem/connection does not produce a shorting loop.
• When attaching an expansion unit to the GLC, be sure to read the expansion unit's
Installation Guide.
Please pay special attention to the following instructions when connecting the power
cord terminals to the GLC unit.
•
If the power supply voltage exceeds the GLC's specified range, connect a voltage
transformer.
•
Between the line and the ground, be sure to use a low noise power supply. If there is still
an excessive amount of noise, connect a noise reducing 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 wires
before connecting it to the GLC unit.
•
The GLC'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.
•
Depending on the input voltage and operating temperature, an incorrectly detected
backlight failure error may occur when power is switched ON, especially at low
temperatures. Be sure the Backlight Failure Detection feature is used only in the
following conditions:
•
All GLC Input and Output signal lines must be separated from all operating circuit
(power) cables.
•
If this is not possible, use a shielded cable and ground the shield.
9
Input/Output Signal Line Cautions
8
Grounding Cautions
7
Power Supply Cautions
The GLC2300-LG41-24V unit's backlight is user replacable.
For an explanation of how to replace the GLC's backlight, please refer to the Back-
light Replacement Guide included with the replacement backlights (sold separately).
10
Replacing the Backlight
Do not use of a different model backlight, since it may cause a GLC
malfunction or breakdown.
GLC Unit
Required Backlight Model
GLC2300-LG41-24V
PS300-BU00
The GLC2300-TC41-24V unit's backlight cannot be changed by the User.
To request replacement service, please contact your local GLC distributor.
If the Operating Temperature is…
The Input Voltage must be…
0
o
C to 10
o
C
DC24.0V to DC28.8V
10
o
C to 50
o
C
DC19.2V to DC28.8V
