78
Common problems during stopping and their solutions
Initial Start Up
Speed
t
LF.33 = 1000
Offset value OK.
LF.33 = 1000
OK but corner speed US.21 too low. In this case
the speed begins to lag during the deceleration but
then recovers in the nal approach. With gearless
it is often necessary to raise the corner speed of
the start of the offset to a higher value.
Raise US.21 from 24ft/min to 100ft/min.
Speed
t
US.20
US.21
Speed
t
LF.33 = 3000
Higher offset value leads to bunching or steps
during nal approach, faster oscillations, reduce
value in steps of 500.
Speed
t
LF.33 = 500
Speed lags during the nal phase of decel, one
slow oscillation just before stop, under shooting of
oor. Raise in steps of 500.
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