CANOGA PERKINS 9101 LAN Chassis - Manual (Page 19)

19
9101 LAN Chassis Canoga Perkins
The polarity of the source DC supply is fixed and therefore determines the appro-
priate connection to the 9101 DC terminals.
If a -48 VDC supply is indicated, the strap is connected from the Chassis Ground to
the +VDC terminal. Then the positive (+) or Common lead from the source DC
supply and the negative (-) lead from the source DC supply are connected to like
terminals on the 9101 power entry barrier strip.
Figure 3-8
9101 LAN Chassis Alarm Contacts
3.4 Connection to DC Power Supply
The connections for typical -48VDC and +48VDC power supplies are shown in
Figure 3-9.
-VDC Terminal for negative lead
CHS-GND Chassis ground terminal for DC supply
+VDC Terminal for positive lead
The chassis alarm contacts are illustrated in Figure 3-8. The interpretation of the
alarms are as follows:
Norm Open Open during normal operation / closed during a power fault
condition.
Common The common pin between alarm contacts.
Norm Clsd Closed during normal operation / open during a power fault
condition.