Parameters 163
Displays the filtered speed error. See the control chain
diagram on page
.
This parameter is read-only.
-
-6000.0 … 6000.0
rpm
Filtered speed error.
See par.
Displays the inverted (unfiltered) speed error. See the control
chain diagram on page
.
This parameter is read-only.
-
-6000.0 … 6000.0
rpm
Inverted speed error.
See par.
Defines a speed reference correction, ie. a value added to the
existing reference between ramping and limitation. This is
useful to trim the speed if necessary, for example to adjust
draw between sections of a paper machine.
Note:
For safety reasons, the correction is not applied when
an emergency stop is active.
WARNING!
If the speed reference correction exceeds
, a ramp stop may be
impossible. Make sure the correction is reduced or
removed when a ramp stop is required.
See the control chain diagram on page
.
0.00 rpm
-6000.00 …
6000.00 rpm
Speed reference correction.
See par.
Defines the time constant of the speed error low-pass filter.
If the used speed reference changes rapidly, the possible
interferences in the speed measurement can be filtered with
the speed error filter. Reducing the ripple with this 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.
0 ms
0…10000 ms
Speed error filtering time constant. 0 = filtering disabled.
1 = 1 ms
Enables/disables resonance frequency filtering. The filtering is
configured by parameters
The speed error value coming to the speed controller is
filtered by a common 2nd order band-elimination filter to
eliminate the amplification of mechanical resonance
frequencies.
Note:
Tuning the resonance frequency filter requires a basic
understanding of frequency filters. Incorrect tuning can
amplify mechanical oscillations and damage the drive
hardware. To ensure the stability of the speed controller, stop
the drive or disable the filtering before changing the parameter
settings.
0 = Resonance frequency filtering disabled.
1 = Resonance frequency filtering enabled.
Off
0.
0
On
1.
1
No.
Name/Value
Description
Def
/
FbEq16
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...