Preface
GLC2400/2500/2600 Series User Manual
10
CAUTIONS
WARNINGS
• The GLC uses a lithium battery to back up its internal clock
and to control memory data. If the battery is incorrectly re-
placed (reversed positive [+] and negative [-] ends), the bat-
tery may explode. Therefore, Pro-face recommends that you
contact your local GLC distributor for instructions before
replacing or changing the battery.
Wiring Layout Cautions:
• To prevent a GLC unit malfunction due to excessive noise,
isolate all GLC input/output signal lines from all power wir-
ing or power cables via a separate wiring duct.
Installation Cautions:
• To reduce the risk of incorrect input or output signals, be
sure that any data cables attached to the GLC unit’s con-
nector make full contact with the connector pins.
General Wiring Cautions:
• To prevent electrical shocks or malfunctions, be sure the
GLC unit’s FG (earth) wire is grounded as follows:
(1) maximum grounding resistance: 100
Ω
Ω
Ω
Ω
Ω
(2) minimum grounding wire diameter: 2 mm
2
• The cables connected to the GLC should be secured by
cable clamps to prevent weight or tension of the cables
added to the connectors or terminals.
•
The GLC unit’s wiring should be checked to confirm that
both the operating voltage and wiring terminal locations
are correct. If either the voltage or the wiring terminal loca-
tion is incorrect, it can cause a fire or accident.
• Be sure to secure all wiring terminal screws with the des-
ignated torque. Screws and terminals that become loose
can cause a short circuit, fire, or accident.