Input/Output Signals of the AML-LIID System (GT-350C-1) CN 2 connector Pin No
Signal names and functions
Name
Other control functions
1
3
RLY 1
RLY3
OFF
When the moment is abnormal When the actual load value calculated inside the AML becomes negative, the crane operation toward critical side (main winch hoisting up, auxiliary winch hoisting up, boom extending, boom lowering) is stopped. However, it is not stopped while the boom is retracted to the traveling posture. When all the conditions below are satisfied, the AML judges that the boom is being retracted to the traveling posture. With GT-350C-1 (1) The boom angle is 2° or less. (2) The boom length is 10.5 m or less. (3) The swing position is within front 10°. When the boom reaches the elevation stroke end When the boom deviates from the boom angle range in which the extension/retraction side pressure of the elevating cylinder can be properly detected (GT-350C-1: -2.4° to 80.6°), the boom elevating operation is stopped. In the boom angle range of 80.4° or more, when the extension/retraction side pressure of the elevating cylinder cannot be properly detected and the moment load factor becomes 100% or more, the automatic stop function by overloading (stop of boom lowering operation) is canceled.
Signal name: Jib set control relay output When the boom is fully retracted (both Di2 and Di3 are ON) and the AML is set to Jib set, the relay output turns ON and the jib can be mounted/stowed. Relay ON (DC24 V): When the jib lock pin is pulled out, the jib mounting/stowing operable lamp lights. Jib can be mounted/stowed. Relay OFF (DC0 V): Even if the jib lock pin is pulled out, the jib mounting/stowing operable lamp does not light. Jib cannot be mounted/stowed. Signal name: AML alarm relay output When the crane is overloaded, this relay contact turns ON, and the buzzer sounds. Relay ON (DC 24 V): The alarm buzzer sounds. Relay OFF (DC 0 V): The alarm buzzer does not sound. Relay output
Conditions for alarming Moment load factor < 90%
4
RLY 4
OFF
While the boom lift is performed with the jib mounted (extended) Moment load factor < 75% 90% ≤ Moment load factor < 100%
ON/OFF
While the boom lift is performed with the jib mounted (extended), the relay output turns ON/OFF when the moment load factor becomes as follows: 75% ≤ Moment load factor < 85%
28
W301-0251E
