Section 4 – MOMENT LIMITER (OVERLOAD DETECTOR) Mini-Crawler Crane M A E D A
4-82 1/2019 MC405C-3
Moment Limiter Working Envelope
Setting
WARNING!
• The boom may go beyond the set value
when operated at high speed even if the
working envelope was restricted by the
moment limiter.
Be sure to set the working envelope with
safe distance from obstacles.
Operate the crane at low speed.
• Be sure to verify that the boom stops at the
set position after setting the boom working
envelope.
If the boom working envelope is limited due to
working space issue, you can set the boom
working envelope to the desired value.
Setting Working Envelope
Fig. 4-211
Operate the boom to the limit of the working
envelope you would like to restrict, and press the
appropriate SETUP/CANCEL switch for 2
seconds.
You can set that limit value.
At the same time, the LED above the appropriate
switch lights up.
Then, return the boom to the following setting to
enable the restriction control.
"Set value – 10 degrees or more" for boom
upper limit.
"Set value + 7 degrees or more" for boom
lower limit.
"Set value – 1.3 m or less" for working radius
upper limit
"Set value – 1.3 m or less" for lifting height
(With [Lower] or [Retract] operation of the
boom)
Or, turn the starter switch to the "OFF" position
and then turn again to the "ON" position to
enable the restriction.
NOTICE: The last status of the set value has
been held in memory even if the starter switch is
turned to the "OFF" position.
Cancelling Working Envelope Setting
Fig. 4-212
• Press and hold the CANCEL switch and
CHECK switch at the same time for 5 seconds
or more.
All the set working envelope restrictions are
cancelled.
At the same time, the LED above all the
working envelope limit switches go off to
complete the cancellation of the settings.
• Press the SETUP/CANCEL switch of the item
which restriction you would like to cancel for 5
seconds.
The set value of only the item can be cancelled.
At the same time, the LED above the switch
goes off to complete the cancellation of the
setting.
NOTICE: For more information on how to set limit
on the working envelope, see "Descriptions of
Switches on Moment Limiter Display" on page 4-
73.
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