Omron CRT1 - 10-2009, Operation Manual

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86
Power Supply Wiring
Section 3-5
• I/O Power Supply
Supply I/O power to the I/O power supply terminals of individual Units, sep-
arately from the communications power supply.
Network Power
Supply Slave Units
These Units use the same set of power supply terminals for both communica-
tions and I/O power, so there is no need to provide separate power supplies.
(Bit Slave Units are sold with a Flat Cable already attached.) The common
communications and I/O power supply is provided to the Master Unit's com-
munications power supply connector (or to the downstream port communica-
tions power supply connectors on Repeater Units).
3-5-1 Power Supply Specifications
Use a communications power supply that meets the following specifications.
BS+
BDH
BDL
BS
−
BS+
BS
−
BD
H
BD
L
BS
+
BS
−
V G
24-VDC com-
munications
power supply
Master Unit
(or Repeater Unit)
Communica-
tions power
supply
terminals I/O
power
supply
terminals
24-VDC
I/O power
supply
Round cable II or
Flat Cable I/II
Communications power supply connector on Master Unit
(or downstream port communications power supply connector
on Repeater Unit)
Overcurrent
protection
(current limit: 4 A)
When using the UL standards,
please install a unit to restrict
current between the external power
supply and this unit to 4 A. (Only
communications power supply)
BS +
BDH
BDL
BS
−
BS +
BS
−
BD
H
BD
L
BS
+
BS
−
24-VDC com-
munications
power supply
Master Unit
(or Repeater Unit)
Round cable II or
Flat Cable I/II
Communications power supply connector on Master Unit
(or downstream port communications power supply connector
on Repeater Unit)
Overcurrent
protection
(current limit: 4 A)
When using the UL standards,
please install a unit to restrict
current between the external power
supply and this unit to 4 A. (Only
communications power supply)
Item Specification
Output voltage 24 VDC
±
10%
Output ripple 600 mVp-p