ZF Marine ClearCommand 9000 Series, Installation, Operation And Troubleshooting Manual, Page: 155 / 272

Page A-25
ZF Mathers, LLC
12125 Harbour Reach Drive, Suite B
Mukilteo, WA 98275 U.S.A.
800-546-5455 / 425-583-1900
Fax: 425-493-1569
S-214 Rev.E 5/03
A) GENERAL INFORMATION
The APS (Automatic Power Selector), Model 13505, provides a simple, solid state solu-
tion to the need for routing redundant DC power sources for vital electronic equipment
while maintaining isolation of the DC power sources.
Two independent batteries rated at the same nominal voltage are wired to separate ter-
minals on the APS and internal diodes maintain total isolation between them. A single
output terminal is wired to the ZF Mathers Propulsion Control System.
The APS is rated for loads of up to 70 Amps on 12-24V systems. The unit is ruggedly
constructed with heavy-duty wiring studs and epoxy-potted components in an anod-
ized aluminum case.
B) APS SPECIFICATIONS
Model: 13505
Maximum Load Current: 70 amps
Operating Temperature: -40 degrees C to +80 degrees C; derate linearly from 100% @
50 degrees C to 70% @ 80 degrees C
Voltage Drop: 0.7 VDC @ 50% load; 0.9 VDC @ full load
Dimensions: 3.25" x 4.5" x 3.1" (8,3 x 11,4 x 7,9 cm)
C) MATERIALS PROVIDED
The single APS is supplied with a hardware packet containing (6) hex nuts, (3) lock
washers, (4) self-tapping mounting screws, (1) instructions diagram.
The twin APS is supplied with (2) single APS hardware packets.
D) INSTALLATION
Refer to the installation Drawing 11488C.
1. Shut off all charging sources and disconnect the negative (ground) side of each
battery which will be wired to the APS.
2. Mount the APS(s) in a suitable location which will keep wire runs to a mini-
mum length, and is (preferably) ventilated, for cooler operation. The case of the
APS is electrically isolated from the internal diodes, so mounting on either a
metal or non-metal surface is acceptable.
3. Complete the wiring as indicated on either Drawing 11488C-1 or 11488C-2.
4. Reconnect the negative battery posts.
E) IMPORTANT NOTE ABOUT BATTERY SOURCES
Whenever the load is turned on, it can be drawing power from the batteries. There-
fore, if the batteries are not simultaneously being recharged, or if charging will not be
available for an extended period, it is recommended that the load be shut off to prevent
complete discharge of batteries.
Automatic Power Selector (APS) Model: 13505
NOTE: N
OT ALL OF THE HARDWARE WILL BE USED IN THE INSTALLATION
;
SOME SPARES ARE
PROVIDED
. N
UT SIZE IS
M-6.