Cha pte r B
User Mode
Cha pte r B
7.2.2 Restriction contents When the stored stop set value or higher is reached, the crane stop output is performed while the crane is operated toward to the critical side. Even after the stop output condition is canceled, the stop output is maintained for 2 seconds. In order to suppress the hunting, hysteresis is used in the range limit judgment. The critical side operations of slewing limit and displayed error codes are as shown below. With the slewing limit, the error code is displayed even when the limit is canceled. (1) Boom height limit
(4) Load radius limit
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Boom extension
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Boom extension
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Elevation raising
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Elevation lowering
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Jib extension
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Jib extension
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Jib tilt raising
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Jib tilt lowering
Code at stop: "W0028 Stopped at lifting height limit
Code at stop:
restriction"
"W0029 Stopped at load radius limit restriction"
(2) Boom upper limit angle restriction -
(5) Right slewing limit
Elevation raising
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Right slewing
Code at stop: "W0026 Stopped at upper boom angle
Code at stop:
limit restriction"
"W0042 Right swing (slewing) restriction limit"
(3) Boom lower limit angle restriction -
(6) Left slewing limit
Elevation lowering
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Left slewing
Code at stop: "W0027 Stopped at lower boom angle
Code at stop:
limit restriction"
"W0043 Left swing (slewing) restriction limit"
7.2.3 Cancel condition Regarding the range limit functions other than the slewing, they can be canceled by the AML emergency (override) switch.
7.2.4 Storing of setting condition With the range limit function, the set limit value is stored in the backup RAM, and the value is retained and used when the machine is restarted within 2 hours. The set value is stored when the range limit value and limit status are changed.
B - 50
W301-0471E
