A-3-6 Handling The Shield On Rs-422A/485 Cables - Omron NS - SETUP Setup Manual

Crimp Terminals
Use M3 crimp terminals.
6.2 mm max.
Applicable Crimp Terminal Examples
Forked type
Manufacturer
J.S.T. Mfg. Co., Ltd.
Molex
Round type
Manufacturer
J.S.T. Mfg. Co., Ltd.
Molex
Recommended Cable
Tachii Electric Wire Co., Ltd.
HIRAKAWA HEWTECH CORP.
A-3-6 Handling the Shield on RS-422A/485 Cables
Perform the following procedures to connect, process the shield, and connect to ground
for communications systems using the NS-AL002. Incorrect connection may result in
communications errors with the host.
Connecting the NS-AL002 D-Sub Connector
Always securely tighten the screws on both sides of the D-Sub connector. Otherwise, the
functional ground terminal (FG:
tional ground of the NS-AL002.
Connecting the Ground Wire
The PT has a functional ground terminal (FG:
1. Ground according to Figure (a) for normal grounding.
• Connect the ground terminal (GR) of the devices to the functional ground (FG:
Make sure that each signal line is grounded at only one point and ground to 100 Ω max.
• Short the LG terminal of the PLC to the ground terminal (GR).
• Use a wire gauge of at least 2 mm
• Refer to the manual for individual Communications Units for details on proper wiring
procedures.
2. Do not ground the functional ground (FG:
panel as devices that generate noise, such as motors or inverters, as shown in Figure
(b).
Forked type
6.2 mm max.
Model
V1.25-N3A
VSY1.25-3.5L
Model
V1.25-MS3
RAV1.25-3
Manufacturer
Round type
Recommended cable size
AWG22 to 16 (0.25 to 1.65 mm
AWG22 to 16 (0.3 to 1.65 mm
Recommended cable size
AWG22 to 16 (0.25 to 1.65 mm
AWG22 to 16 (0.3 to 1.65 mm
Model
TKV VBS3P-03
CO-HC-ESV-3P×7/0.2
) of the PT will not be properly connected to the func-
).
2
for the ground wire.
) of the PT if it is mounted to the same
Appendix 3 Using NS-AL002 Converters
2
)
2
)
2
)
2
)
).
A-25