2-5
2 Installing the NB Unit and Connecting Peripheral Devices
NB-series Programmable Terminals Setup Manual(V107)
2-1 Installing the NB Unit
2
2-1-3 Connecting the Power Supply
Precautions for Safe Use
• Do not connect an AC power supply to the DC power terminals.
• Use a DC power with a slight voltage fluctuation and that will provide a stable output even if
the input is momentarily interrupted for 10 ms.
Rated Power Supply Voltage: DC 24 V (Allowable range DC 20.4 ~ 27.6 V)
Power Supply
The connectable power supply specifications are as follows: figure out a suitable power supply
specification so as to satisfy the requirement for power supply capacity.
NB5Q/NB7W/NB10W-TWB
NB3Q -TWB
Precautions for Safe Use
• Making the connection by using terminal screws crimping on a twisted-pair cable with a
crimping range of 12~26 AWG, and only 6.5 mm of insulation peel of the cable needs to be
peeled off. Tighten the terminal screws at a torque of between 0.3 and 0.5 N·m. Make sure
the screws are properly tightened.
2-1-3 Connecting the Power Supply
Models Rated Voltage Allowable Voltage Range Power
NB3Q-TW00B DC24V DC20.4V to 27.6V 5W
NB3Q-TW01B 9W
NB5Q-TW00B 6W
NB5Q-TW01B 10W
NB7W-TW00B 7W
NB7W-TW01B 11W
NB10W-TW01B 14W
0V
The reverse side of NB
MCCB
DC24V
24V
0V
The reverse side of NB
MCCB
DC24V
24V
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