Adjustment Of A Safety Threshold And An Intermediate Threshold - Tractel Group dynasafe HF 31/1/A2 Notice D'assemblage

This configuration satisfies a number of applications such as, for example, fast lifting speed conditioned
to load lifted. Audible or visual signal triggered at 90 % of the WLL. Etc.
Preliminary conditions:
Equipment required:
GB
1
2
the safety threshold S1
3
4
the intermediate load "X".
5
the intermediate load S2
6

2.5.3. Adjustment of a safety threshold and an intermediate threshold.

- Load limiter correctly mounted and wired.
- Adjustment screws unscrewed to the maximum.
- Hook free of any load.
- A load (called "WLL") equivalent to 100 % of the nominal capacity
authorized for the lifting machine.
- An additional load equivalent to 10 % of the "WLL".
- A load "X" equivalent to the value of the intermediate threshold.
ACTIONS
Lift the two loads
(100 % + 10 % WLL)
by about 10 cm.
Adjust
Check
correct operation.
Lift
Lift
Check
correct operation.
REMARKS
The additional 10 % represents the overshoot
value authorized in accordance with the European
directives.
Gradually screw in the threshold adjustment
screws (§ 2.1 point 06) until the NC contact opens
(see § 2.3. b).
Use an ohmmeter, for example, to check the state
of the contact.
It must be possible to lift the "WLL" load.
It must be possible to lift the "WLL" load + 10 %.
Depending on the lifting speed, the dynamic effect
may produce an unintentional overload. In this
case, consult with a technician capable of
integrating a signal filtering device (example: time-
out, etc.).
Wait for the load to stabilize before adjusting
the threshold.
Gradually screw in the threshold adjustment
screws (§ 2.1 point 07) until the NC contact opens
(see § 2.3. b).
Use an ohmmeter, for example, to check the state
of the contact.
Check that micro switch S2 opens when the
load "X" is lifted
10