Parameters 221
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
Defines the proportional gain for the speed controller when an
emergency stop is active. See parameter
.
10.00
1.00…250.00
Proportional gain upon an emergency stop.
100 = 1
No.
Name/Value
Description
Def/FbEq16
Time
Speed reference
Actual speed
Time
Speed reference
Actual speed
ACS580 FW.book Page 221 Wednesday, September 21, 2016 9:48 PM