2-39
Cisco IE 3000 Switch Hardware Installation Guide
Chapter 2 Switch Installation
Connecting Power and Alarm Circuits
shows the completed wiring for two power supplies and two external alarm devices.
Figure 2-30
Completed Connections for Two External Alarm Devices on the Power and Relay
Connector
If your power source is –48 VDC, this table describes the wiring connections for
.
See the
“Attach the Power and Relay Connector to the Switch” section on page 2-23
for instructions on
how to connect the power and relay connector to the front panel.
1
Power source A positive connection
5
Power source B positive connection
2
Power source A return connection
6
Power source B return connection
3
External device 1, relay wire major alarm
connection
7
External device 2, relay wire minor alarm
connection
4
External device 1, relay wire major alarm
connection
8
External device 2, relay wire minor alarm
connection
201
8
20
RT A
V
A
RT A
V
A
1
2
3
4
5
6
7
8
1
Power source A return connection
5
Power source B return connection
2
Power source A –48 VDC connection
6
Power source B –48 VDC connection
3
External device 1, relay wire major alarm
connection
7
External device 2, relay wire minor alarm
connection
4
External device 1, relay wire major alarm
connection
8
External device 2, relay wire minor alarm
connection