Omron OMNUC W Series Manual page 112

Power Supply Tap Configuration
Connector C
Fuse A
Cable A
Connector A Connector B
Internal Circuitry of the Power Supply Tap
Remove fuse A when disconnecting cables on side A, and fuse B when disconnecting cables
on side B.
V+
CAN H
DeviceNet special
Shield
cables on side A
CAN L
V-
Dual Power Supply
Power Supply Taps can be used to construct a dual power supply system in the network
because diodes are built-in. Dual power supply differs from parallel operation of power sup-
plies, so the following restrictions apply.
Restrictions
Dual power supply is basically used to ensure backup power supply, not parallel operation of
power supplies. Therefore, each power supply to be used must meet the power allocation
specifications (must satisfy Steps 1 and 2).
6.3 Precautions for Communications Line Design
Fuse B
Model number
Power supply
cable
Description
Manufacturer
Cable B
* Can be purchased from OMRON 24 SER
VICE CO., Ltd.
Power supply Tap
Fuse A Fuse B
Ground
V- V+
terminal
Power supply device
6-15
1485T-P2T5-T5
• With reverse-current
prevention
• With ground terminal
∗
Allen-Bradley
V+
CAN H
DeviceNet special
Shield
cables on side B
CAN L
V-
Fuses used:
Little fuse 312008
Rated current: 8 A
Rated voltage: 250 V
×
φ
6.35 31.75 mm
6