74
Power Supply Wiring
Section 3-5
The method for supplying communications power and I/O power depends on
the types of cable and Slave Unit that are used. The differences are shown in
the following table.
Multi-power Supply
Slave Units
Using Round Cable I
• Communications Power Supply
Supply power to the power supply terminals of the communications con-
nectors of individual Units (or to the PORT1 connector for Repeater Units).
• 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. To prevent noise, be sure
to use separate power supplies for I/O and communications.
Using Round Cable II or
Flat Cable I/II
• Communications Power Supply
Supply communications power to the Master Unit's communications power
supply connector (or to the downstream port communications power sup-
ply connectors on Repeater Units).
• 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.
Slave Unit classifica-
tion according to
power supply method
Cable type
Communications
power supply
I/O power supply
Multi-power supply
Round cable I
Supplied to Units
individually.
Supplied to indi-
vidual Units sepa-
rately from the
communications
power supply.
Round cable II
Flat Cable I/II
Supplied through
the Communications
Cable by supplying
power to the Master
Unit.
Network power supply
Round cable I
Cannot be used.
Round cable II
Flat Cable I/II
The communications power supply and
the I/O power supply are provided
together through Communications Cable.
BD
H
BD
L
BS
+
BS
−
V G
Communica-
tions power
supply
terminals
I/O power
supply
terminals
24-VDC com-
munications
power supply
24-VDC
I/O power
supply
Round cable I
Master Unit
BS+
BDH
BDL
BS
−
BS+
BS
−
Overcurrent
protection
(current limit: 4 A)
When complying with UL standards,
install a device to limit the current
between the external power supply
and the Unit to 4 A or less for the
communications power supply.
Содержание CRT1 - 10-2008
Страница 2: ...CRT1 Series CompoNet Slave Units and Repeater Unit Operation Manual Revised October 2008...
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Страница 15: ...xvi...
Страница 23: ...xxiv Conformance to EC Directives 6...
Страница 51: ...28 Slave Unit Models Section 1 2...
Страница 123: ...100 Connecting External I O for Slave Units Section 3 6...
Страница 365: ...342 Temperature Input Units Section 7 5...
Страница 381: ...358 Expansion Unit Specifications Section 8 2...
Страница 418: ...395 Repeater Unit Section 10 2 Dimensions 42 3 50 3 1 27 5 95 mm...
Страница 419: ...396 Repeater Unit Section 10 2...
Страница 424: ...401 CX Integrator Section 11 1...
Страница 575: ...552 Current Consumption Summary Appendix D 552...
Страница 581: ...558 Index...
Страница 583: ...560 Revision History...