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Annex 5 – Rollback control and ride comfort
When the Playboard controller is applied to installations equipped with closed loop gearless machines, comfort and
precision can be optimized thus avoiding undesired effects such as rollback (typical of lifts with unbalanced load).
The following parameters can be adjusted to achieve optimal setting for your installation. It is suggested to follow the
procedure from start to end in the proposed sequence.
GEARED motor
In old motors the auto-tuning may fail: in these cases the auto-tuning type 1 (at point 10 select P04 = 1) can be
executed but in this case the values P06 and P12 must be manually entered.
Typical values of P06 are between 30% and 70% of P03.
F.r. = Frequency rated
S.s. = Speed synchronous
S.r. = Speed rated
Acceptable values of P12 are between 0.5 and 5 Hz.
For instance, for a 4-pole motor, the Rated Frequency is 50 Hz, the synchronous speed is 1500 rpm and the Rated
Speed is on the motor nameplate (always in revolutions per minute).
GEARLESS motor
In case of a problem “Error 52 = er7 Error VVVF” will show in the MENU ERRORS. In this case please check the
connections of the motor encoder, clear the errors in the “Errors” menu and repeat the poletuning procedure from
point 14.
After the poletuning procedure try to move the elevator in maintenance in up and down for some motor revolutions. If
it moves correctly the procedure is over, otherwise, in the event of an error of the VVVF (ere or Ocx or Os), reverse
the two motor phases changing the VVVF’s H190 parameter, clear the errors in the “Fault” menu and repeat the
poletuning procedure.
Adjust the following Parameters to compensate for other undesired effects.
Parameter Description
Default
Suggested Adjustments
Gearless Geared
Starting phase adjustments