Input/Output Signals of the AML (AML-L B) System (GR-120N-1)

CN 1 connector

Pin No. Name

35 MOINN/ ANAINH

36 MOSLD/ DET3SLD

Signal names and functions

Signal name: Input for pressure sensor for moment detection (retraction side)

Analog input to detect the elevating cylinder retraction pressure.

Input voltage: DC 0 to 5 V

Signal name: Shield for pressure sensor (moment detection)

Input voltage: DC0V

39 SIF1GND Signal name: Ground for serial port 1

Input voltage: DC0V

40 SIF1SRC Signal name: Power supply for serial port 1

Output voltage: DC24V

43 SIF1RXD+ Signal name: Receiving (+) input signal for serial port 1

44 SIF1RXD- Signal name: Receiving (-) input signal for serial port 1

(*1): Received signal name

Jib angle

45 SIF1SLD Signal name: Shield for serial port 1

Input voltage: DC0V

CN2 connector signals and functions are shown below:

CN 2 connector

Pin No. Name

The received data from the transmitter on the boom head (*1)

Signal names and functions

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. When the boom elevation stops, the slow stop function activates simultaneously. (The current controlled by the AML is output from the boom raising proportional valve output CNTL3P or the boom lowering proportional valve input CNTL4P to activate the slow stop function.) However, the slow stop function is not activated when the elevation slow stop/override switch is set to “OVERRIDE”.

Relay ON (DC24V): Normal operation is available. Relay OFF (DC0V): The crane operation is stopped. When the AML emergency switch is set to “Emergency” and the PTO switch is set to “OVERRIDE”, this relay output is shifted from OFF to ON and the AML automatic stop function is cancelled. The overwind cutout function is also cancelled by the diode circuit.