213.805.022
23
Date: 2022-09-19
Re-calibrating overload
WARNING! Re-calibrating the overload affects safety mechanisms of the winch. Violation of the
maximum overload can cause a dangerous situation with risk of serious injury or death.
The winch is set to enter overload mode if the winch is loaded with more than the nominal load.
The overload is a safety feature to ensure that the winch cannot lift more than what is safe.
The overload detection is based on the motor current which is affected by the effectiveness of the
-calibrating.
It is therefore essential to control that the overload is correct at regular inspections.
The overload can be re-calibrated to lower values as follows:
1.
Ensure at least 1.5 m clearance below the winch
2.
Load the winch with the desired overload threshold 10% (max 11kg total)
3.
Set the DMX channels to 999
Attention! When setting the mode to 9, the winch will start moving
4.
Then set mode to 9
The winch will now run down a number of times. When the winch has moved back to the soft TOP
limit the overload has been re-calibrated.
Ensure to change the DMX channel and MODE away from 999 and 9 after re-calibration.
Synchronized movements of multiple winches
If several winches are installed to perform synchronized movements the best result is achieved by
using a fading 16-bit position. The winches have a slight deviation in performance of the motors,
so some motors have a slightly higher maximum speed than others.
This difference in speed can be solved by running the winches with fading positions, like when
fading conventional light over time, the position of the winch should be faded from one position
to another over a certain amount of time. In that way the winches will follow the fade-curve, and
multiple winches can follow the same fade curve.
When fading the positions:
1.
The speed channel should be a set to 100 to gain the highest possible speed.
2.
The position channel should be assigned as a 16-bit channel with
MSB
and
LSB
.
3.
The speed of the fade needs to be slower than the maximum speed, so the motors have
speed enough to follow the fade-curve.
If the fade of the positions is too fast, the winches will move at the maximum speed, and you will
see the difference in the motor speed.
If the fade is to slow the winches will move stop move stop, when the position changes, thus
giving a discontinuous movement.
Summary of Contents for Winch 10 Cable
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Page 39: ...213 805 022 39 Date 2022 09 19 Appendix 1 Winch 10 cable 4 m 212...
Page 40: ...213 805 022 40 Date 2022 09 19 Appendix 2 Winch 10 cable 10 m 213...
Page 41: ...213 805 022 41 Date 2022 09 19 Appendix 3...
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Page 43: ...213 805 022 43 Date 2022 09 19 Appendix 4...
Page 44: ...213 805 022 44 Date 2022 09 19 Appendix 5 A block diagram of the control system of the winch...
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