Hitachi LQE550, User Manual

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S-12
(chapter 3, page 3-8)
NOTICE
z Electrically insulate the mount base from the enclosure. To assure this, do
not remove the insulating sheet from the mount base.
z 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.
z 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.
(chapter 4, page 4-3)
NOTICE
z Do not set the MAIN/SUB selector switch to 2 to F. Switch setting to 2 to 4
may render the module inoperable or destroy transfer data (G000 to GFFF).
z Switch off the power supply before operating any switches. Operating
switches with the power supply switched on may cause the module to fail.
(chapter 4, page 4-3)
NOTICE
Switch off the power supply before operating any switches. Operating switches
with the power supply switched on may cause the module to fail.
(chapter 4, page 4-7)
NOTICE
Do not transfer the system program. If the system program is transferred, the
built-in program in the CPU link module may get out of control, causing invalid
data to be transmitted or CPU internal memory to be altered. If the system
program is transferred by mistake, reset the CPU module for recovery.