Accel/Decel - ABB ACS800 Firmware Manual

180
Index Name/Selection

22 ACCEL/DECEL

22.01 ACC/DEC SEL
ACC/DEC 1
ACC/DEC 2
ACC/DEC DIR
PAR 22.08&09
22.02 ACCEL TIME 1
0.00 ... 1800.00 s
Actual signals and parameters
Description
Acceleration and deceleration times.
Selects the active acceleration/deceleration time pair.
Acceleration time 1 and deceleration time 1 are used. See parameters
and 22.03.
Acceleration time 2 and deceleration time 2 are used. See parameters
and 22.05.
Acceleration time 1 and deceleration time 1 are used in forward direction and
Acceleration time 2 and deceleration time 2 are used in reverse direction. See
figure below.
Max Speed
a1
d1
0
a2 = Acceleration time2
d2 = Deceleration time2
Min Speed
Acceleration and deceleration times given with parameters 22.08 and 22.09
Defines the acceleration time 1, that is the time required for the speed to
change from zero to the maximum speed.
- If the speed reference increases faster than the set acceleration rate, the
motor speed will follow the acceleration rate.
- If the speed reference increases slower than the set acceleration rate, the
motor speed will follow the reference signal.
- If the acceleration time is set too short, the drive will automatically prolong the
acceleration in order not to exceed the drive operating limits.
Acceleration time
a1 = Acceleration time1
d1 = Deceleration time1
a2 d2
FbEq
22.02 1
22.04 2
3
Motor Running
In Fwd Direction
t (s)
Motor Running
In Rev Direction
4
0 ... 18000