Functions of and How to Use Us er Mode (GT-250C-1/GT-350C-1)

Boom Angle Limit

Warning

The swing operation range cannot be restricted. Pay sufficient attention when the extension status of outriggers differs or the performance varies due to operation area with no front jack used.

How to Use the Working Area Limiting Function [NOTICE]

 If the working area limit is registered very close to an obstacle, there is a risk of the crane colliding with the obstacle, depending on the operational status and the manner in which the load is handled. Secure a sufficient allowance when registering. The working area limit function limits operation of the boom to the pre-registered boom angle (upper limit, lower limit), lifting height, and load radius. Use this function when performing operation in a place where there are obstacles around the machine, requiring the working-area limitation of the boom.

Even after the power supply is turned off (PTO switch: OFF), the registered data is stored, and when the power supply is turned on again, the system is resumed with the stored operation status. However, the maximum storage period is 2 hours. If 2 hours or more have passed before the next power on, the registered data is erased. To resume the operation, register the settings all over again.

- Upper boom angle limit

- Lower boom angle limit

- Lifting height limit

- Load radius limit

Automatic stop and alarm buzzer (AML built-in buzzer sounds for 3 seconds.)

If the capacity is exceeded during swing and the alarm buzzer sounds, stop swinging immediately and bring down the lifted load onto the ground or swing to the opposite side to avoid danger. Upper

Move the boom to a desired limit boom angle, and press the upper boom angle limit key or lower boom angle limit key. The corresponding boom angle limit indicator lamp will flash, and the alarm buzzer will sound continuously, indicating that the boom angle limit has been registered in the memory. When the boom is moved back to a lifting angle within the set limit, the boom angle limit indicator lamp stops flashing and stays lit, and the alarm buzzer stops. Thereafter, the boom angle limit indicator lamp flashes and the alarm buzzer sounds continuously whenever the boom angle previously registered is reached. (Boom raising and lowering stop automatically.) To cancel the boom angle limit, press the upper boom angle limit key or lower boom angle limit key again. The corresponding boom angle limit indicator lamp will go out.