Theory And Diagnostic Information; 48-Volt Power Circuit-Theory Of Operation - Textron JACOBSEN Eclipse 2 Technical/Repair Manual

Theory and Diagnostic
Information
48-Volt Power Circuit—Theory of
Operation
48-Volt Power Circuit Components
Battery Pack—If Equipped
The battery pack consists of four 12-VDC sealed lead
acid batteries (B1–B4) wired in series. The battery pack
is equipped with a battery gauge to monitor charge
status. The battery pack is protected with a 50-amp fuse
(F1).
Gen-Set—If Equipped
The gen-set consists of a generator with an internal
voltage regulator. As the engine turns, the generator
provides voltage to the voltage regulator. The voltage
regulator maintains voltage at or near 48 VDC.
Key Switch
The key switch (SW2) is a three-position switch (off, run,
and start), used to operate the main control unit.
Main Control Unit
The main control unit (U5) has a built-in LCD display and
manages all machine functions.
4262930-Rev A
48-Volt Power Circuit Operation—Battery
Pack
See Figures 4-6 and 4-7.
With the key switch in the off position, voltage is available
to the 30A fuse from the battery pack. From the 30A fuse,
voltage is available to key switch terminal B and main
control unit connector J1-3. Voltage is also available to
the work light connector positive terminal.
48-Volt Power Circuit Operation—Gen-Set
See Figures 4-8 and 4-9.
With the key switch in the run position, and the engine
running, voltage is available to the 30A fuse from the
generator. From the 30A fuse, voltage is available to key
switch terminal B and main control unit connector J1-3.
Voltage is also available to the work light connector
positive terminal.
Ignition Shutoff Circuit Operation—Gen-Set
See Figures 4-10 and 4-11.
With the key switch in the off position, ground is provided
to the ignition coil. When the ignition coil is grounded, it is
prevented from producing spark and the engine cannot
operate.
ELECTRICAL
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