Intelligence Aided Lifting Equipment
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damage to the equipment or personnel.
The anti-drop function controls the output signal by detecting the relationship between the
weight of the load and the set anti-drop threshold value (weight value) to achieve protection. If the
load weight value < anti-fall threshold value, then the output signal is 0V, and the coil is energized;
If the load weight value
≥
anti-fall threshold value, then the output signal is 24V, and the coil is
de-energized.
5.5.1 Anti-drop threshold setting
1.
Enter the “Extended Function Setting”
→
“Anti-drop Setting”
→
“Anti-drop
Threshold Value” menu.
2.
Set the anti-drop threshold weight by the “ENT” button; (generally, the set threshold
value is slightly larger than the weight of fixtures).
5.5.2 Signal setting
The control of anti-drop function system relies on setting IO signals: the release signal is
controlled by the handle extension interface or the extension interface on expansion board (the
host does not support the output signal temporarily); set the corresponding IO number in
“Extended Function Setting” > “Expansion Interface Setting”> “Release Signal Output”.
For example:
The Pin 4 of the handle extension interface is used as the release signal output.
Link Pin 4 and Pin 1 to the outer coil KM1 (such as relay). In the “Release Signal Output”, set IO
number to 24. If the load weight value < anti-drop threshold value, then the coil KM1 has 24V
power supply; If the load weight value
≥
anti- drop threshold value, then the coil KM1 loses
power.
5.5.3 Clamping protection function
The anti-drop function may be added with the clamping feedback signal and release signal
input to ensure that the device is completely clamping before lifting. If the system has received the
clamping signal feedback, the device can run upwards as well as downwards. If the system fails to
receive the clamping signal feedback and the release input signal, the device cannot run upwards
but may downwards. When the system fails to receive the clamping signal feedback, but has
received the release input signal, if the current load weight value < anti-drop threshold value, then
the device can run upwards but cannot downwards; if the current load weight value
≥
anti- drop
threshold value, then the device cannot run upwards but may downwards.
Current load weight value
＜
anti-drop threshold value
Clamping
feedback signal
Release
signal input
Running status
0
0
Cannot run upwards, but
can run downwards
