196
Wiring for Power Supply
Section E-5
Round Cable II, Flat Cable I and Flat Cable II
•
Communications power:
Supplied through the communications power supply connector on the Master
Board.
Supplied through the downstream port of communications power supply
connector on the Repeater Unit.
•
I/O power:
Supplied separately from the communications power to each I/O power
supply terminal on the Unit.
Master Board
BS
+
BDH
BDL
BS
−
BS
+
BS
−
BS
+
BD
H
BD
L
BS
−
V
G
Overcurrent protection
(current limit: 4 A)
Round Cable I
I/O power
supply
24 VDC
I/O power
supply terminals
Communications
power supply terminals
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.
Communica-
tions power
supply
24 VDC
Communications power supply connector on Master Unit
or downstream port's communications power supply connector on Repeater Unit
Master Board or
Repeater Unit
BS
+
BDH
BDL
BS
−
BS
+
BS
−
BS
+
BD
H
BD
L
BS
−
V
G
Round Cable II, Flat
Cable I, or Flat Cable II
Overcurrent protection
(current limit: 4 A)
I/O power
supply
24 VDC
I/O power
supply terminals
Communications
power supply terminals
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.
Communica-
tions power
supply
24 VDC
Summary of Contents for 3G8F7-CRM21
Page 4: ...iv...
Page 10: ...x TABLE OF CONTENTS...
Page 46: ...26 Connecting the Communications Power Supply Cables Section 2 4...
Page 74: ...54 Board Hardware Error Notification Section 4 8...
Page 173: ...153 APPENDIX D Sample Program D 1 Sample Program 154...
Page 230: ...210 Wiring for Power Supply Section E 5...
Page 234: ...214 Index...
Page 236: ...216 Revision History...
Page 237: ......