User Mode
Cha pte r B
B-6
Cha pte r B
Do Output Control
6.1 Cause for AML automatic stop output The AML automatic stop output is an output to drive the solenoid of unload valve for main pumps circuit. ON is output during crane operation, and OFF is output while the operation is being stopped. Once the operation is stopped, in order to prevent the repetition of detection signal (stop <=> operation), the unload status is maintained for 2 seconds even after the stop condition is resolved. However, during this period of 2 seconds, when an operation is performed only to return to the safe side, the on-load output is performed immediately to allow the return operation to be performed. In the stop status, a intermitted warning is given using the AML built-in buzzer. At the same time, an error code is displayed on the graphic display. The causes for stop are as follows: Stop item
Error code W0023 or
1
100% lifting performance stop
2
Anti-two-block stop
W0024
3
Backward stability stop
W0025
4
Boom upper limit stop (When area limit is set)
W0026
5
Boom lower limit stop (When area limit is set)
W0027
6
Lifting height limit stop
W0028
7
Load radius limit stop
W0029
8
Elevation lower limit (At cylinder stroke end)
W0054
9
Elevation upper limit (At cylinder stroke end)
W0055
W0124 (In the case of main winch used for jib)
B - 41
W301-0471E
