Zoomlion ZCC1100H, Operator'S Manual

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Operator’s Manual for Crawler Crane
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4-32
20°
10°
0°
50°
40°
30°
80°
60°
70°
90°
Figure 4-32 Position of boom angle indicator
4.4.6 Derricking limiter
It is used to detect main boom angle in real time according to the data collected by angle
sensors. Once detected angle exceeds safe angle range, an alarm will be sent out and
dangerous movements will be switched off so as to ensure safe crane operation.
a) Crane operation with main boom
When main boom angle reaches the maximum value within the minimum radius, the crane
movement “raise main boom” will be cut off automatically, the icon will appear on the
load moment limiter, the tricolor light will send out yellow and red warning, and the buzzer
will sound.
When main boom angle is less than 2° of the maximum angle, the buzzer will sound, but
main boom can still be raised up.
b) Crane operation with main boom and fixed jib
The requirements for main boom angle under this boom configuration are the same as that
under “Main boom” configuration. The fixed jib can be fitted in the angle of either 10° or 30°
to main boom.