Wiring The Ground Wire; Peripheral Device Connection Limitations - Omron NS - REV 12 Setup Manual

•
Parts Used to Connect the Power Supply
Precautions
for Safe Use
7 mm max.
•
Recommended Products
J.S.T. Mfg. Co., Ltd.
Fuji Terminal Industry Co., Ltd.
Nichifu Terminal Industries Co., Ltd.
Precautions
for Safe Use
3-1-5

Wiring the Ground Wire

The PT is provided with a functional ground (FG:
Wire the FG terminal according to the following conditions.
1. Ground according to Figure when there is difference in potential between the PT and host.
Do not ground the functional ground of the PT if it is far from the host and one-point
grounding is difficult.
2. Do not ground the functional ground (FG:
as devices that generate noise, such as motors and inverters.
Precautions
for Correct Use
3-1-6

Peripheral Device Connection Limitations

Select one of the following combinations when devices requiring power supply are connected
to port A, port B, and an Expansion Interface Unit on the PT. Use a 5-V Bar Code Reader with
a current consumption of 250 mA or the equivalent.
When a Bar Code Reader and the NS-AL002 are connected to ports
A and B at the same time
When a Bar Code Reader and the CJ1W-CIF11 are connected to
ports A and B at the same time
Connect power to the power terminal block using twisted-pair power lines with
a cross-sectional area of at least 2 mm
The correct tightening torque for the terminal block is 0.8 N⋅m. Tighten terminal
block screws properly.
Forked type
Manufacturer
When surge noise occurs in the DC power supply, connect a Transistor Voltage
Suppressor (TVS) between the 24-V and 0-V DC terminals.
Recommended TVS model: 1.5KE33CA
Manufacturers: Vishay Intertechnology Inc, ST Microelectronics
PT Host
One-point
grounding
Ground correctly to prevent malfunctions caused by noise.
Port A and B connection combinations
Round type
7 mm max.
Model number of
forked terminals
2-YS3A
2-YAS3.5
2Y-3.5
) of the PT if it is mounted to the same panel
2
and always using M3.5 crimp terminals.
Model number of
round terminals
2-3.5
V2-S3.5
2-3.5
) terminal.
Expansion Interface Unit
(NS-CA001, NS-CA002,
Cannot be used
Cannot be used
3-1 Installing the PT
Applicable power
lines (twisted-pair)
2.0 to 2.63 mm
2
NS-CLK21)
3-7