How to Use the Working Range Limit
Function
[NOTICE]
◆
If the selected working range limits allow the
crane to approach too close to an obstruction, the
crane may be contacted or hit, depending on the op-
erational status and the manner in which the load is
handled. When selecting limits, allow sufficient
clearance.
The working range restricting function makes the boom
automatically stop at the previously registered boom an-
gles (upper and lower), lifting height and radius.
If makes the alarm sound when the boom reaches the
previously registered swing restriction.
The function is useful for handing a load in a confined
place because it defines the area in which the boom can
operate.
◆
Turning the power off (PTO switch: OFF) automatical-
ly erases all the previous settings stored in memory after
approximately 2 hours. To resume the operation more
than 2 hours after the power has been last turned off,
enter the settings all over again.
Boom Angle Limit
Raise or lower the boom to the desired angle, and press
the boom upper or lower limit restriction key. The corre-
sponding limit restriction indicator lamp will flash and the
buzzer will sound continuously, indicating that the limit
boom angle has been registered in the memory. When
the boom is moved back to an angle within the set limit,
the limit restriction indicator lamp stops flashing and
stays illuminated and the buzzer stops.
Thereafter, the upper or lower boom angle limit restric-
tion indicator lamp flashes and the buzzer sounds
continuously whenever the upper or lower limit previous-
ly registered is reached.
To cancel the boom angle limit function, press the boom
angle limit restriction key again. The corresponding
boom angle limit restriction indicator lamp will go off.
T038300E
40
AML (Overload Prevention Device)
AML (Overload Prevention Device)
T24155E
R
Load radius restricted
H
Lifting height restricted
θ
u
θ
L
Upper boom angle restricted
Lower boom angle restricted
Swing restricted
t
max t
m
m
T24156E
Upper boom angle
limit restriction indicator
lamp
Lower boom angle
limit restriction indicator
lamp
Upper boom angle
limit restriction key
Lower boom angle
limit restriction key
Summary of Contents for GT-550E-2
Page 20: ...A 19 Safety Rules Safety Rules...
Page 23: ...A 22 Safety Rules Safety Rules...
Page 29: ...A 28 Safety Rules Safety Rules...
Page 30: ...A 29 Warning Labels Warning Labels...
Page 32: ...A 31 Warning Labels Warning Labels 1 2 3 JIB PIN STATUS...
Page 36: ...1 Contents Contents...
Page 37: ...2 Contents Contents...
Page 38: ......
Page 41: ...6 Layout of Controls Layout of Controls of Controls Layo out...
Page 46: ...H000450E OPERATION...
Page 73: ......
