Mitsubishi Electric GOT2000 Series User Manual page 190

(b) Measure 2
By attaching a ferrite core (KITAGAWA INDUSTRIES CO.,LTD. RFC-H13 or equivalent) to the ground cable
connected to the control panel having the GOT as shown in Figure C, the influence of noise is reduced.
If wiring as shown in Figure C is unavailable, perform wiring as shown in Figure D.
Figure C
Ground wires
Use as short
and thick a wire
as possible.
Figure D
Ground wires
■7. Power supply system
(1) Current status
Check if the power is supplied for the GOT, I/O equipment (such as a relay), and power equipment (such as a servo
amplifier) from the same system.
Main power
PLC power
200VAC
(2) Measure when a single ground cable is led
By separately wiring the GOT power and the I/O equipment power/power equipment power, and connecting an
isolation transformer, the influence of noise is reduced.
Main power
PLC power
200VAC
I/O power
Main circuit power
10 - 12
10.1 GOT Restoration Sheets
Connection
cable
GOT
FG
LG
Ferrite core
Grounding to
the panel
Connection
cable
GOT
FG
LG
Ferrite core
Grounding to
the panel
Isolation transformer
PLC
GOT
I/O power
I/O equipment
Main circuit power
Power equipment
Isolation transformer
PLC
GOT
I/O equipment
Power equipment
□ Effective
□ Ineffective
□ Applicable
□ Not applicable
□ Effective
□ Ineffective