49
Figure 27 Completed DC Power Connections on the Power Connectors
For a –48 VDC power source, this table describes the wiring connections for
.
Attaching the Power Connectors to the Switch
To attach the power connectors to the front panel of the switch, follow these steps:
1.
Insert one power connector into the DC-A receptacle on the switch front panel, and the other into the DC-B
receptacle. See
.
Warning:
Failure to securely tighten the captive screws can result in an electrical arc if the connector is accidentally
removed.
Statement 397
Warning:
When you connect or disconnect the power and/or alarm connector with power applied, an electrical arc
can occur. This could cause an explosion in hazardous area installations. Be sure that all power is removed from the
switch and any other circuits. Be sure that power cannot be accidentally turned on or verify that the area is
nonhazardous before proceeding.
Statement 1058
1
Power source A positive connection
3
Power source B positive connection
2
Power source A return connection
4
Power source B return connection
1
Power source A return connection
3
Power source B return connection
2
Power source A –48 VDC connection
4
Power source B –48 VDC connection
332023
1
2
3
4
