Maeda MC305C-3 - Lifting Height Upper Limit Switch and LED (Orange); Cancel Switch; Check Switch

M A E D A Mini-Crawler Crane Section 4 – MOMENT LIMITER (OVERLOAD DETECTOR)
3/2019 MC305C-3 4-67
Lifting Height Upper Limit Switch and
LED (Orange)
Use this switch to set or cancel the hook height
upper limit.
While the hook height is restricted by detecting the
height of the tip of the boom, the hook height on
the display panel shows the hook height when the
hook was raised to the over hoist detection status.
Fig. 4-179
Setup
With no upper limit value being set, set the boom
to the hook height you would like, and press the
switch for 2 seconds.
The hook height at this point is set as the upper
limit.
At the same time, the LED lights up indicating that
the upper limit value was set.
To enable this setting, turn the key switch to the
"ON" position again after turning it to the "OFF"
position, or reduce the hook height by "1.3 m" or
more from the set hook height to get out of the
pre-warning zone while the engine is being
started.
NOTICE: Be sure to verify that the boom
automatically stops at the set hook height before
performing the actual operation. If the boom does
not stop automatically, re-set the hook height
using the procedure above.
When the boom reaches the pre-warning zone or
stops at the upper limit with the hook height upper
limit set, the hook height upper limit LED flashes.
Cancel
With the upper limit value being set (LED ON),
press the switch for 5 seconds.
The current upper limit value setting will be
cleared. At the same time, the LED goes off
indicating that the upper limit value setting is
cleared.
NOTICE: The setting and cancelling will not
repeat even if you keep the switch pressed for
more than 2 seconds. Let your hand go off the
switch and press the switch again.
Cancel Switch
Use this switch to cancel the all setting sets in the
section 2 to 5 above.
Fig. 4-180
• Press this switch and "CHECK" switch at the
same time for 5 seconds or more.
The all value sets in the section 2 to 5 above will
be cancelled.
Check Switch
Use this switch to verify the values set in the
section 2 to 5 above.
Fig. 4-181
• Press this switch. Every time the switch is
pressed, the set value will be displayed in the
following order.
Fig. 4-182