Input/Output Signals of the AML (AML-L B) System (GR-700EXL-1) CN2 connector signals and functions are shown below: CN 2 connector Pin No.
Signal names and functions
name
Signal name: Automatic stop relay output This relay contact turns OFF and stops crane operation when the crane is overloaded, the hook is overwound or the AML main unit is out of order. Relay ON (DC24V): Normal operation is available. Relay OFF (DC0V): The crane operation is stopped. Relay output
Crane condition
ON
Moment ratio < 90%
ON
90%
Moment ratio < 100%
Moment ratio 1
RLY 1 OFF
100%
While boom lift with the jib mounted is performed, the crane operation stops autmatically when the load moment ratio reaches the ranges listed below, depending on the outrigger extension width. Maximum (7.2m)
Moment ratio
93%
Middle (6.7m)
Moment ratio
92%
Middle (5.5m)
Moment ratio
91%
OFF
Overwinding.
OFF
The crane movement going beyond the restriction while working range limit is registered.
OFF
Failure in the AML unit.
OFF
Operated to critical side when backward stability control activated.
Signal name: AML alarm relay output This relay contact turns ON and outputs alarm buzzer when the crane is overloaded. Relay ON (DC24V): Alarm buzzer is output. Relay OFF (DC0V): Alarm buzzer is not output. Relay output OFF
Moment condition Moment ratio < 90% 90%
4
RLY 4
ON/OFF
Moment ratio < 100%
While boom lift with the jib mounted is performed, the alarm buzzer is output when the load moment ratio reaches the ranges listed below, depending on the outrigger extension width. Maximum (7.2m)
84%
Moment ratio < 94%
Middle (6.7m)
84%
Moment ratio < 94%
Middle (5.5m)
82%
Moment ratio < 92%
Moment ratio
ON
100%
While boom lift with the jib mounted is performed, the alarm buzzer is output when the load moment ratio reaches the ranges listed below, depending on the outrigger extension width. Maximum (7.2m)
Moment ratio
94%
Middle (6.7m)
Moment ratio
94%
Middle (5.5m)
Moment ratio
92%
30
W301-0212E
