Fuji Electric Frenic lift, Справочное руководство

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2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
The graph below shows a creepless operation applied when no CRPLS is assigned. Both the creep
speed (C07) and zero speed (C04) are set to 0.00 r/min. To prevent any impact to the load, when the
speed changes to zero speed from any other speed, the speed control should be programmed so that
the acceleration/deceleration time and S-curve zone will not change.
High speed
Speed
Time
Zero speed
ON FWD
SS1
SS2
ON
ON
SS4 ON
Release
Brake
Acceleration
Jerk
Creepless operation
Zero speed
command
High speed
command
L19: S-curve setting 1
E12: Acceleration/
deceleration timer 5
L25: S-curve
setting 7
L24: S-curve
setting 6
E13: Acceleration/
deceleration time 6
L28: S-curve
setting 10
Maximum speed
Acceleration time
Maximum speed
Deceleration time
Theoretical starting point of
creepless operation
Practical starting point of
creepless operation
(Calculated by arrival point and moving
distance)
Example of Creepless Operation without
CRPLS
Improving the landing position accuracy in a creepless operation
Observing the following rules improves the landing position accuracy (including the repeatability) in
a creepless operation.
(1) When using a multistep speed command to change the reference speed (pre-ramp) to zero speed,
lessen the number of terminals which should be switched.
Changing the setting of only a single terminal for changing the reference speed (pre-ramp) can
suppress the fluctuation of signals issued from the host controller, improving the stopping
accuracy. For that purpose, use L11 (Zero speed) to L18 (High speed).
(2) Use the multistep speed command agreement timer (E19) for multistep speed commands.
(3) Specify the filter time constant for reference speed (
final
) (L09) as small as possible. It is,
however, not necessary to specify the value smaller than the factory default.
Increasing the filter time constant makes the actual moving distance to a stop longer than the
one specified by L34 (Moving distance in creepless operation). If such is necessary, therefore,
increase the L34 data to adjust the landing position. In this case, it is difficult to calculate the
moving distance with Equations 1 and 2 given in "Deceleration point programming and moving
distance." Tune-up with the actual elevator is required.
(4) Increase the ASR gain.
In a creepless operation, keeping "Reference speed (final) = Detected speed" is ideal. It is,
therefore, necessary to increase the ASR gains to the extent that no hunting occurs, by setting
L36 to L42.
(5) Widen the S-curve zone at the start of deceleration.
With the same reason as stated in (4) above, to suppress the speed difference at the start of
deceleration, it is recommended that the S-curve zone be set to 20% or more to the deceleration
sequence.
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