Electrical Functions; Theory Of Operation - prime mover smx45 Master Service Manual

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Electrical Functions

1. Theory of Operation

The travel control system on the truck is electrically controlled
and monitored. The lift/lower systems are electrically
controlled and hydraulically operated. All circuits are
protected against overload with automatic resetting circuit
breakers. Refer to the following detailed electrical circuit
schematics as they apply. The complete electrical circuit
schematics can be found starting on
the truck, the transistor controller checks the closing
sequence of the micro switches in the circuit. For information
on the transistor controller see
Normal Operation
1. When the truck is first powered on, it displays an
hourmeter (see parameter 20 on
first five seconds. Then, it normally displays the
battery state-of-charge throughout operation.
2. While a Caution error code is tripped, it is
displayed 3.4 seconds out of every 5.1 seconds.
The other 1.7 seconds shows normal display.
3. When battery state-of-charge is zero percent, lift is
not allowed. When the battery state-of-charge is 10
percent or lower, the battery light blinks.
Master Service Manual
F-code Section
PT S5.0
Electrical Functions
Version no T-code
002 SMX
page 194. When starting
page 239.
page
2006-12-12
C-code
5000
178) for the
145