Speed Reference Conditioning; Speed Control - ABB ACQ80-04 Firmware Manual

No. Name/Value
23.13 Deceleration time 1
0.000...1800.000 s
24
24 Speed reference
conditioning
24.01 Used speed
reference
-30000.00...
30000.00 rpm
24.02 Used speed
feedback
-30000.00...
30000.00 rpm
24.03 Speed error filtered
-30000.0... 30000.0
rpm
24.12 Speed error filter
time
0...10000 ms
25

25 Speed control

25.01 Torque reference
speed control
-1600.0...1600.0%
Description
Defines the time required for the speed to change from the
speed defined by parameter
parameter 30.12 Maximum
If the speed reference decreases slower than the set
deceleration rate, the motor speed will follow the reference.
If the reference changes faster than the set deceleration rate,
the motor speed will follow the deceleration rate.
If the deceleration rate is set too short, the drive will
automatically prolong the deceleration in order not to exceed
drive torque limits (or not to exceed a safe DC link voltage).
Notes
• Applicable only when
parameter MPPT reference is enabled, then the parameter
should be set to it's default value.
• If a short deceleration time is needed for a high inertia
application, the drive should be equipped with braking
equipment such as a brake chopper and brake resistor.
Deceleration time 1.
Speed error calculation; speed error window control
configuration; speed error step.
Displays the ramped and corrected speed reference (before
speed error calculation).
This parameter is read-only.
Speed reference used for speed error calculation.
Displays the speed feedback used for speed error calculation.
This parameter is read-only.
Speed feedback used for speed error calculation.
Displays the filtered speed error. This parameter is read-only. -
Filtered speed error.
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.
Speed error filtering time constant. 0 = filtering disabled.
Speed controller settings.
Shows speed controller output that is transferred to the
torque controller. This parameter is read-only.
Limited speed controller output torque.
46.01 Speed scaling
speed) to zero.
79.40 MPPT reference is disabled. If
Parameters 97
Def/FbEq16
20.000
(not from
10 = 1
-
See par.
46.01
-
See par.
46.01
See par.
46.01
0 ms
1 = 1 ms
0.0
10 = 1