280 Parameters
and
define a gear function between
the motor speed feedback and motor control. The gear is
used to correct a difference between the motor and encoder
speeds for example if the encoder is not mounted directly on
the motor shaft.
See also section
(page
).
Note:
This parameter cannot be changed while the drive is
running.
1
-2147483648 …
2147483647
Motor gear numerator.
-
See parameter
.
Note:
This parameter cannot be changed while the drive is
running.
1
-2147483648 …
2147483647
Motor gear denominator.
-
Selects how the drive reacts to loss of measured motor
feedback.
Fault
Drive trips on a
or
fault.
0
Warning
Drive generates an
or
warning and
continues operation using estimated feedbacks.
Note:
Before using this setting, test the stability of the speed
control loop with estimated feedback by running the drive on
estimated feedback (see
1
Forces the Vector motor model to use estimated motor speed
as feedback. This parameter can be activated when the
encoder data is obviously unreliable because of slippage, for
example.
Note:
This parameter only affects the selection of feedback
for the motor model, not for the speed controller.
No
The motor model uses the feedback selected by
0
Yes
The motor model uses the calculated speed estimate
(regardless of the setting of
,
which in this case only selects the source of feedback for the
speed controller).
1
Selects the source of load speed and position feedbacks used
in control.
None
No load feedback selected.
0
Encoder 1
Load feedbacks are updated based on the speed and position
values read from encoder 1.
The values are scaled by the load gear function (
).
The encoder is set up by the parameters in group
.
1
No.
Name/Value
Description
Def
/
FbEq16
Motor speed
Encoder speed
=
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 ...