Mitsubishi MELSEC iQ-F FX5UC, User Manual

Page: 83 / 184

6 WIRING
6.3 Grounding
81
6
• When two wires are connected to a single terminal
<Reference>
■
M3.5 terminal screw
• When a single wire is connected to a single terminal
• When two wires are connected to a single terminal
6.3
Grounding
Perform the following.
• Perform class D grounding (Grounding resistance: 100
Ω
or less).
• Ground the PLC independently when possible.
• If the PLC cannot be grounded independently, perform the "Shared grounding" shown below.
PLC extension devices (excluding communication adapters)
• Bring the grounding point close to the PLC as much as possible so that the ground cable can be shortened.
Manufacturer Model Supported standard Crimp tool
JST Mfg. Co., Ltd. FV1.25-B3A UL Listed YA-1
(JST Mfg. Co., Ltd.)
Terminal
φ
3.2
6.3 mm
or more
φ
3.2
Terminal screw Crimp terminal 6.2 mm
or less
6.2 mm
or less
6.3 mm
or more
Terminal
Terminal screw Crimp terminal
6.8 mm
or less

3.7

3.7
6.8 mm
or less
Terminal

3.7
6.0 mm
or more
6.0 mm
or more

3.7
Terminal screw Crimp terminal 6.8 mm
or less
6.8 mm
or less
PLC PLC PLC
Other
equipment
Other
equipment
Other
equipment
Independent grounding
(Best condition)
Shared grounding
(Good condition)
Common grounding
(Not allowed)
PLC
CPU
module
Extension
module
Other
equipment
Expansion
adapter
Independent grounding
class D grounding
(grounding resistance: 100

or less)