Parameters 171
Defines the derivation time for acceleration(/deceleration)
compensation. In order to compensate for a high inertia load
during acceleration, a derivative of the reference is added to
the output of the speed controller. The principle of a derivative
action is described under parameter
.
Note:
As a general rule, set this parameter to the value
between 50 and 100% of the sum of the mechanical time
constants of the motor and the driven machine.
The figure below shows the speed responses when a high
inertia load is accelerated along a ramp.
No acceleration compensation:
Acceleration compensation:
0.00 s
0.00 … 1000.00 s
Acceleration compensation derivation time.
10 = 1 s
Defines the acceleration (or deceleration) compensation filter
time constant. See parameters
.
8.0 ms
0.0 … 1000.0 ms
Acceleration/deceleration compensation filter time.
1 = 1 ms
No.
Name/Value
Description
Def
/
FbEq16
Time
%
Speed reference
Actual speed
Time
%
Speed reference
Actual 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 ...