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Page 25
CHAPTER TWO
SECTION 2.1
MOUNTING THE EHU’s ON THE BOOM (continued)
EHU WIRING
Trim approximately 1.5 inches of the outer jacket of the control cable (4 wire). Remove the shield material,
the support thread and cut the ground wire off as shown in
figure 211
. Attach electrical tape at the end of
the trimmed control cable jacket so that there is no chance for a short. Remove 0.25 inches of the insula-
tion from each of the individual 22 AWG wires, leaving bare copper. Tinning of the copper wire ends with
solder is not required but may be helpful in keeping the ends together while attaching the control cable
wires.
Figure 2.12
shows 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 2.13
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
2.15
. 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 2.15
for each EHU.
Be careful to ensure that
there are no bare wires protruding out from the terminal clamps, to avoid potential shorts.
The wiring sequence for each EHU is also imprinted on the PCB that the terminal header is mounted on
(located inside the EHU). 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 2.14
shows a blue line crossing out
the text in question. The yellow circle shows the correct wiring sequence.
BLACK
RED
GREEN
WHITE
4 Pin Header Wiring Sequence
TERMINAL
PLUG
TERMINAL
HEADER
FIG. 2.15
FIG. 2.11
FIG. 2.13
FIG. 2.14
FIG. 2.12
