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Operati
on
11
Operation
11.1
Starting | Stopping the CM2
XL
General description
The CM2
XL
has a BARTH STG-125
diesel engine governor. The STG-125
combines the ignition switch and built-in
display lights in one unit. The controlled
preheating and engine start procedure,
combined with the automatic engine stop
function in the event of a fault, ensure the
longest possible service life of the engine.
Fig. 9 - STG-125
Ignition/Engine ON
Status display of the STG-125 engine governor
Battery
Control/monitoring of the generator voltage. Faults are
indicated by the red LED light.
Engine faults
Failed engine start, sensor or cable break are
indicated by the yellow LED light.
Oil pressure gage
Low oil pressure leads to an immediate engine stop.
Malfunctions prevent the engine from starting and are
indicated by the red LED light.
Temperature gage
Indicates engine overheating that results in an
immediate engine stop.
Control
By pressing the START/STOP button for a
short time (<1s)
the ignition of the relay output
is changed, which turns on all ignition loads
OFF
OFF
OFF
Ignition On
without starting the engine.
This mode has a
battery monitor, which blocks the entire
ignition load, in case of low battery
voltage. Pressing this
Engine is
running without
problems
button for longer (> 1s) initiates the
Engine malfunction
engine start. At the beginning
the STG-125 checks if a preheating start
procedure is necessary.
OFF
OFF
OFF
OFF
Start procedure
Then the starter is driven until it reaches
idling speed. Pressing
OFF
OFF
OFF
Low oil pressure
engine
malfunction
Engine malfunction
START/STOP again causes the engine
to stop immediately.
OFF
OFF
OFF
Temperature error
STATUS
OFF
OFF
OFF
OFF
Regulator in
Standby Mode
Engine starting
process
OFF
OFF
OFF
OFF
OFF
OFF
OFF
