Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual page 130

[Example of processing for a shielded cable]
To protect the signals, cover the connector pins
with the heat shrinkable insulation tubes.
(If the signals are stripped, they are affected by
static electricity and may result in malfunction.)
[Wiring example when using a duct (Example of a problem and its solution)]
Drive
unit
Control
panel
Noise source
(Power system,
Control
panel
Noise source
(Power system,
(d) I/O signal lines and other communication cables
For the following cables, if pulled out of the control panel, always ground the shield section of these lines and
cables in the same manner described in (a).
• I/O signal lines (including a common line)
128
Cover the conductive part
with insulating tape.
Relay
Drive
unit
etc.)
Relay
etc.)
Take off the insulating tube of each shield and connect
the shields of the cables with conductive tapes.
Pick any one of the shielded cables
and solder it to the FG wire.
Relay
Relay
Programmable
controller
Modified
Relay
Relay
Programmable
controller
Drive Drive
unit unit
Wiring duct
The drive units are placed
near the noise source. The
connection cable between
the programmable controller
and drive units is too long.
Wiring duct
The programmable controller
and drive units are placed
closely.
The connection cable between
them is located separately from
the power line, and is as short
as possible. (In this example,
the cables are connected
without using the duct.)