Sitex SP38 Autopilot, Installation And Operation Manual

Page: 41 / 162

Sitex SP38 Installation and Operation
Document PN 29010101 V2r0
- 40 -
Figure 10b – SPU Connector Details
Wiring the SPU
Power Supply (J1, Batt IN)
The SP38 SPU operates on any voltage from 10VDC to 30VDC. This allows operation with
vessel battery systems of nominal voltages from 12 to 24 VDC.
Caution!
Do not power up the SPU until you have completed the installation, and
performed the steps outlined in “Post-Installation Checks.”
Generally, wiring for the positive leg of a DC system will be red or white, while wiring for the
negative leg (usually referred to as Ground) will be black.
Power to supply the autopilot should be taken directly from a breaker or distribution panel. The
autopilot should be wired into its own individual breaker or fuse.
Using appropriately sized
wire or cable (see 3.22 Wire Gauge Requirements ), wire the battery connections to the
connector plug and receptacle labelled J1 - B
ATTERY
I
NPUT OF THE
SPU.
Caution! The
SP38
SPU & the
SP38
Head are NOT reverse-
polarity
protected. If you wire the wrong voltage polarity at J1, you will
damage the SPU and Control Head! This will void the warranty.
Installation