User's Manual

Installation
15
External Battery Power Connections
!
C a u t i o n
The unit must be powered by a limited power
source (12V DC) in accordance with standard
UL/IEC 60950-1. See Power in Appendix A below.
This connection is used for normal operation of the PIU, when
radio communication is required, or when RS485 or RS232
ports are used.
1. Release the screw at the top of the battery chamber
door and slide the door out, as shown in Figure 10.
2. Connect the DC Adapter board (FCN6538B) to the DC
power input connector on the back of the unit (Figure
11).
3. Connect the FKN8250B 7 ft cable to the DC Adapter
board.
4. Connect the other cable end to an external 12VDC
battery
through 1A fuse (not supplied).
5. Close the battery
chamber door and secure with the
screw.
+
-
1A Fus
e
DC adapter board
FCN6538B
DC power in
FKN8250B
Figure 11
PIU Unit – Rear View with DC Adapter