M A E D A Mini-Crawler Crane Section 4 – ELECTRIC MOTOR (OPTION)
3/2019 MC305C-3 4-121
DC12V Power Switch
The DC12V power switch is used to switch the
DC power output source for the crane operation
system.
Fig. 4-356
• ON: Power is supplied to the crane operation
system.
• OFF: No power is supplied to the crane
operation system.
AC Circuit Power Switch
The AC circuit power switch is used to witch the
AC power output source for the Inverter unit and
inverter cooling fan.
Fig. 4-357
• ON: Power is supplied to the Inverter unit and
inverter cooling fan.
• OFF: No power is supplied to the Inverter unit
and inverter cooling fan.
NOTICE:
• No safety hazard is posed even if the DC12V
power switch and AC circuit power switch
remain on.
• The AC circuit power switch is illustrated in the
upper figure, and the DC12V power switch is
illustrated in the lower figure.
Power Light (White)
The power light is designed to indicate the
presence of energization to this machine from
power supply equipment.
Fig. 4-358
• ON: This machine is deriving power from
power supply equipment.
• OFF: This machine is deriving no power from
power supply equipment.
NOTICE: If the power lamp remains off despite
the power supply equipment breaker being
turned ON with power supply assured between
power supply equipment and this machine,
check the power supply on power supply
equipment.
Trouble Light (Red)
WARNING! An error occurs in the Inverter
unit, which causes the trouble light to come
ON.
Contact us or our sales service agency to
request inspection and repair in the above
event.
The trouble light is designed to indicate the
presence of an error in the Inverter unit.
Fig. 4-359
• ON: An error is detected in the Inverter unit.
• OFF: The Inverter unit is in normal operation.
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