3-1 Installing the PT
3-6
Item Value
Power supply voltage 24 VDC
Allowable voltage range 20.4 to 27.6 VDC (24 VDC ±15%)
Power supply capacity 25 W min. (NS5: 15 W min.)
24 VDC
Breaker
Functional ground
Breaker
Functional
ground
24 VDC
power
supply
24 VDC power supply
24 VDC
NS12, 10, 8 NS5
• Parts Used to Connect the Power Supply
Note 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
Note 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
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