Hitachi LQE550 User Manual page 45

3 MOUNTING AND WIRING
DANGER
Switch off the power supply before making connections to the terminal block.
Wiring with the power supply switched on may incur electrical shock hazards.
An electric shock may lead to a deatch or burn. Noise may cause the system
to malfunction. Ground the line ground (LG), frame ground (FG), and shield
wire (SHD) terminals.
WARNING
If the module emits smoke or foreign odor, immediately switch off the power
supply and investigate the problem cause.
Do not perform any installation, wiring, handling, or internal modification
procedures other than stated in this manual. In no event will Hitachi be
responsible for personal injury or death or any damage to Hitachi's product or
peripheral equipment arising out of the use of such an unauthorized
procedure.
While the power is applied, never touch a terminal strip or connector pin. If
you touch a terminal strip or connector pin while the power is applied, you may
receive an electric shock.
NOTICE
Electrically insulate the mount base from the enclosure. To assure this, do
not remove the insulating sheet from the mount base.
The LG is a ground terminal for power supply noise. The FG and SHD are
ground terminals for the noise in the communication module and other external
interface lines. To avoid interference between the ground terminals,
separately ground the LG and FG.
To avoid noise-induced malfunction, do not bundle the 100 VAC/100 VDC
wiring and network cable together, but route them at least 100 mm away from
each other.
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