Omron OMNUC W R88A-NCW152-DRT, Manual

Page: 112 / 292

6.3 Precautions for Communications Line Design
6-15
6
Power Supply Tap Configuration
* Can be purchased from OMRON 24 SER
VICE CO., Ltd.
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.
„ 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).
Model number 1485T-P2T5-T5
Description • With reverse-current
prevention
• With ground terminal
Manufacturer
Allen-Bradley
∗
Connector C
Connector A Connector B
Cable A
Power supply
cable
Fuse A
Fuse B
Cable B
V+
CAN H
Shield
CAN L
V-
V+
CAN H
Shield
CAN L
V-
V+ V-
Fuse A Fuse B
Fuses used:
Little fuse 312008
Rated current: 8 A
Rated voltage: 250 V
6.35
φ
31.75 mm
Power supply device
DeviceNet special
cables on side A
Ground
terminal
Power supply Tap
DeviceNet special
cables on side B
×