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3-1 Installing the PT
3-7
24 VDC
Breaker
Functional ground
Breaker
Functional
ground
24 VDC
power
supply
24 VDC power supply
24 VDC
NS15, 12, 10, 8
NS5
•
Parts Used to Connect the Power Supply
Precautions
for Safe Use
Connect power to the power terminal block using twisted-pair power lines with a
cross-sectional area of at least 2 mm
2
and always using M3.5 crimp terminals.
The correct tightening torque for the terminal block is 0.8 N
⋅
m. Tighten terminal
block screws properly.
Forked type
Round type
7 mm max.
7 mm max.
•
Recommended Products
Manufacturer
Model number of
forked terminals
Model number of
round terminals
Applicable power
lines (twisted-pair)
J.S.T. Mfg. Co., Ltd.
2-YS3A
2-3.5
Fuji Terminal Industry Co., Ltd.
2-YAS3.5
V2-S3.5
Nichifu Terminal Industries Co., Ltd.
2Y-3.5
2-3.5
2.0 to 2.63 mm
2
Precautions
for Safe Use
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
3-1-5
Wiring the Ground Wire
The PT is provided with a functional ground (FG: ) terminal.
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: ) of the PT if it is mounted to the same panel
as devices that generate noise, such as motors and inverters.
PT
Host
One-point
grounding
Summary of Contents for NS15-V2 Series
Page 1: ...Cat No V083 E1 14 Programmable Terminals NS Series SETUP MANUAL...
Page 2: ......
Page 34: ...1 4 Procedure for Running NS series PTs 1 12...
Page 54: ...2 2 Part Names and Functions 2 20...
Page 144: ...4 4 Recommended Connector Cables 4 28...
Page 174: ...5 3 Connecting to Host via EtherNet IP 5 30...
Page 246: ...6 11 Verifying Tags 6 72...
Page 280: ...Appendix 2 Dimensions A 20 NS5 V1 V2 Cable Connection Dimensions...
Page 333: ......
Page 334: ......