Kato SR-300L, Instruction Manual

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2) Voice warning, warning chime or emergency sound emitted
depending on extent of entry into restricted region
If slewing does not stop automatically immediately before the
restricted region, but overruns into the region due to a "slewing
stop system" malfunction, unlevel machine or strong winds, a
voice warning, warning chime or emergency sound is emitted,
according to how far it slewed into the restricted region, to
notify the operator of the danger.
In addition, even if slewing is reversed to escape the restricted
region, the warning sound will continue until the crane is no
longer in the restricted region.
Slewing operation Slewing position Voice warning Warning sound
Continuing to slew
in same direction
Point D and beyond ―――――――― "DING DONG", "DING DONG",
…
Restart slewing in
same direction
Region E
"Slewing limit reached"
(each time lever operated)
"DING DONG", "DING DONG", …
Region E and beyond
(Point D + 20
°
or more)
―――――――― ――――――――――
Reverse slewing
From any point
(from any slewing angle)
―――――――― ――――――――――
(611A-0054-0E)
Be sure to always park and level the machine on firm ground before operating the crane. If not
level, the slewing will not automatically stop at the correct position even if the "slewing stop
system" is functioning normally. This can cause the crane to tip over, hit obstructions,
electrocution or other accidents.
(541A-0241-1E)
Always leave the key for the ACS emergency switch with the site safety manager before starting
crane operations.
If it becomes necessary to switch the ACS emergency switch to "release", due to the "slewing
stop system" or "ACS system" malfunctioning, always report the situation to the safety manager
and obtain their permission.
(611A-0055-0E)