8
GB
4.4. Connection diagram
S1
Green
Blue
Brown
Grey
White
Pink
NC
NC
NO
NO
S2
Yellow/Green
4.5. Threshold adjustment
NOTE
In the examples given below, we have arbitrarily
designatedthresholdS1asthesafetythresholdand
thresholdS2asthecomplementarythreshold.Since
themicroswitcheshavethesamecharacteristics,
theseconfigurationscanbeinverted.
4.5.1 Factory preset load limiters
WhenyoupurchasealoadlimiterHF31/1/A2withthe
factor preset option, the load limiter is supplied with
the adjustment screws and locknuts locked with red
varnish. The nameplate on the load limiter indicates
thethresholdsettingvalueandthewireropediameter
for which the thresholds have been adjusted. The
spacers supplied and placed between the fixed and
mobile half-clamps must mandatorily be reinstalled
(see§2.2pointe).
4.5.2 Adjustment of a safety threshold
Preliminaryconditions:
– Loadlimitercorrectlymountedandwired.
– Adjustmentscrewsunscrewedtothemaximum.
– Hookfreeofanyload.
Equipmentrequired:
– 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».
ACTIONS
REMARKS
1
Liftthetwoloads
(100%+10%WLL)
byabout10cm.
The additional 10 % represents
the overshoot value authorized
inaccordancewiththeEuropean
directives.
2
Adjust
thesafetythreshold
S1.
Graduallyscrewinthethreshold
adjustmentscrews(§4.1,rep.6)
untiltheNCcontactopens(see
§4.3.b).
Use an ohmmeter, for example,
tocheckthestateofthecontact.
3
Check
correctoperation.
It must be possible to lift the
“WLL”load.
It must be possible to lift the
“WLL”load+10%.
Depending on the lifting speed,
thedynamiceffectmayproduce
anunintentionaloverload.Inthis
case, consult with a technician
capable of integrating a signal
filtering
device
(example:
time-out,etc.).
