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Page 20
SECTION 1.1
EHU WIRING
BLACK
RED
GREEN
WHITE
4 Pin Header Wiring Sequence
TERMINAL PLUG
TERMINAL HEADER
FIG. 1.10
FIG. 1.11
FIG. 1.12
FIG. 1.14
Cut the control cable in half, into two 5 foot lengths, one for each EHU.
Trim approximately 1.5
inches of the outer jacket of the control cable (4 wires). Remove the shield material and support thread,
then cut the ground wire off as shown in
Figure 1.10
. Attach electrical tape at the end of the trimmed con-
trol cable jacket so that there is no chance for a short. Remove 0.25 inches of the insulation from each of
the individual 22 AWG wires, leaving bare copper.
Tinning of the copper wire ends with solder is not
recommended by the connector manufacturer
.
Figure 1.11
shows what the control cable should look
like when you are finished with the trimming. Dip each of the copper wires into connector protector before
inserting into the terminal plug.
Figure 1.12
shows what the connector protector will look like.
The terminal header assembly consists of the terminal header and the terminal plug as shown in
Figure
1.14
. The plug is shipped loosely attached to the header. Remove this plug when wiring and firmly plug
back in when completed.
Follow the wire sequence in
Figure 1.14
for each EHU.
Be careful to ensure that there are no bare
wires protruding out from the terminal clamps, to avoid potential shorts. Also make sure you
are clamping down on bare wire, and not the insulation of the wire.
The wiring sequence for each EHU is also imprinted on the PCB that the terminal header is mounted on
(located inside the EHU), as shown in
Figure 1.13
. Pay no attention to the second row of imprinted text,
these pins are for use in the manufacturing of the board itself and are of no use to you.
Figure 1.13
shows
a blue line crossing out the text in question. The yellow circle shows the correct wiring sequence.
Figures 1.10
and
1.11
are for reference only. The 4
-
conductor cable has black shielding, with only 4 conduc-
tors.
FIG. 1.13
PREPARING THE BOOM ASSEMBLY
EHU Wiring