The Cause Of Malfunctions Related Wiring/Remedy - Mitsubishi Electric GOT2000 Series Hardware User Manual

Pin layout
Cable
External cable GT11H-C□□□-37P
GT11H-C□□□
Relay cable
Connector conversion box
*1 The external cable has three braided shields. Bundle the three shields and ground them.
*2 Be sure to ground FG terminal.

The cause of malfunctions related wiring/Remedy

Grounding of the GOT may cause electric potential difference and noise interference, which may result in GOT malfunctions.
These problems may be resolved by taking the following measures.
Wiring path of the GOT's ground cable and power line
Bundling the GOT's ground cable and power line together can cause interference noise, which may result in malfunctions.
Keeping the GOT's ground cable and power line away from each other will help minimize noise interference.
FG
Power supply for power equipment
Good: Wiring the ground cable away from the
power cable
Connecting the ground cable from the panel that houses control equipment to the
panel to which the GOT is grounded
When running a single ground cable from the panel that houses such piece of control equipment as a PLC to the panel to
which the GOT is grounded, the ground cable may have to be directly connected to the terminal on the GOT.
When using the connector conversion box
Connection cable
Ground cable from
the panel that houses
control equipment
9 HANDY GOT POWER WIRING AND SWITCH HANDLING
334
9.2 Power Wiring
Terminal No.
24VDC+
36,37
(Short-circuit inside of the connector)
Red, (core wire 4)
24+ (label)
Terminal block 1)
1
Bad: Bundling the ground cable and
Connector
conversion box
FG
24VDC-
18,19
(Short-circuit inside of the connector)
Black, (core wire 4)
24G (label)
Terminal block 1)
3
FG
Power supply for power equipment
the power cable
FG
1
*1
Shield
FG (label)
*2
Terminal block 1)
2