Parameters 235
22.02
SPEED ACT FTIME
Defines the time constant of the actual speed filter,
that is, the time within the actual speed has reached
63% of the nominal speed (filtered speed =
SPEED ACT).
If the used speed reference remains constant, the
possible interferences in the speed measurement
can be filtered with the actual speed filter. Reducing
the ripple with the filter may cause speed controller
tuning problems. A long filter time constant and fast
acceleration time contradict one another. A very long
filter time results in unstable control.
If there are substantial interferences in the speed
measurement, the filter time constant should be
proportional to the total inertia of the load and motor,
in this case 10…30% of the mechanical time
constant
t
mech
= (
n
nom
/
T
nom
) ×
J
tot
× 2
π
/ 60, where
J
tot
= total inertia of the load and motor (the gear ratio
between the load and motor must be taken into
account)
n
nom
= motor nominal speed
T
nom
= motor nominal torque
5.000 ms /
0.000…
10000.000 ms
Time constant for actual speed filter.
- /
1000 = 1 ms
22.03
SPEED FB FAULT
Selects the action in case of speed feedback data
loss.
Note:
If this parameter is set to
, a loss
of feedback will cause an internal faulted state. To
clear the internal fault and to reactivate speed
feedback, use parameter
ENC PAR
REFRESH.
Fault /
Fault
Drive trips on a fault (OPTION COMM LOSS,
ENCODER FAILURE, ENCODER CABLE or SPEED
FEEDBACK depending on the type of problem).
0
Warning
Drive continues operation with open loop control and
generates an alarm (OPTION COMM LOSS,
ENCODER FAILURE or SPEED FEEDBACK
depending on the type of problem).
1
No
Drive continues operation with open loop control. No
faults or alarms are generated.
2
22.04
SPEED REF SEL
Selects the source for speed reference.
INTERNAL /
INTERNAL
Speed reference based on parameter
.
0
No.
Bit/Name/Value/
Range
Description
Def/Type
FbEq
(16b/32b)
Summary of Contents for ACL30
Page 1: ...ABB high performance elevator drives User s manual ACL30 elevator drive ...
Page 4: ......
Page 20: ...20 Safety instructions ...
Page 34: ...34 Operation principle and hardware description ...
Page 42: ...42 Planning the cabinet installation ...
Page 60: ...60 Planning the electrical installation ...
Page 126: ...126 Using the control panel ...
Page 318: ...318 Maintenance ...
Page 334: ...334 The Safe torque off function ...
Page 338: ...338 Mains chokes ...
Page 342: ...342 EMC filters ...
Page 348: ...Dimension drawings 348 Frame size B D1 D2 W H1 H2 ...
Page 349: ...Dimension drawings 349 ...
Page 350: ...Dimension drawings 350 Frame size C D1 D2 H2 H1 W ...
Page 351: ...Dimension drawings 351 ...
Page 352: ...Dimension drawings 352 Frame size D ...
Page 354: ...354 Dimension drawings EMC filters JFI 0x ...
Page 356: ...356 Dimension drawings Brake resistors JBR xx ...
Page 358: ...358 Dimension drawings ...