ABB ACS880 Firmware Manual page 187

No. Name/Value
28.57 Critical frequency 3
high
-500.00 ... 500.00
Hz
28.71 Freq ramp set
selection
Acc/Dec time 1
Acc/Dec time 2
DI1
DI2
DI3
DI4
DI5
DI6
DIO1
DIO2
Other [bit]
28.72 Freq acceleration
time 1
0.000 ... 1800.000
s
28.73 Freq deceleration
time 1
0.000 ... 1800.000
s
28.74 Freq acceleration
time 2
0.000 ... 1800.000
s
Description
Defines the high limit for critical frequency 3.
Note: This value must be greater than or equal to the value of
28.56 Critical frequency 3
High limit for critical frequency 3.
Selects a source that switches between the two sets of
acceleration/deceleration times defined by parameters
28.72...28.75.
0 = Acceleration time 1 and deceleration time 1 are in force
1 = Acceleration time 2 and deceleration time 2 are in force
0.
1.
Digital input DI1 (10.02 DI delayed
Digital input DI2 (10.02 DI delayed
Digital input DI3 (10.02 DI delayed
Digital input DI4 (10.02 DI delayed
Digital input DI5 (10.02 DI delayed
Digital input DI6 (10.02 DI delayed
Digital input/output DIO1
Digital input/output DIO2
Source selection (see Terms and abbreviations
Defines acceleration time 1 as the time required for the
frequency to change from zero to the frequency defined by
parameter 46.02 Frequency scaling
Maximum frequency)
If the reference increases faster than the set acceleration
rate, the motor will follow the acceleration rate.
If the reference increases slower than the set acceleration
rate, the motor frequency will follow the reference.
If the acceleration time is set too short, the drive will
automatically prolong the acceleration in order not to exceed
the drive torque limits.
Acceleration time 1.
Defines deceleration time 1 as the time required for the
frequency to change from the frequency defined by
parameter 46.02 Frequency scaling
30.14 Maximum frequency) to zero.
If there is any doubt about the deceleration time being too
short, ensure that DC overvoltage control
control) is on.
Note: 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.
Defines acceleration time 2. See parameter
acceleration time 1.
Acceleration time 2.
low.
status, bit 0).
status, bit 1).
status, bit 2).
status, bit 3).
status, bit 4).
status, bit 5).
(11.02 DIO delayed status, bit 0).
(11.02 DIO delayed status, bit 1).
on page 88).
(not to parameter
(not from parameter
(30.30 Overvoltage
28.72 Freq
Parameters 187
Def/FbEq16
0.00 Hz
See par.
46.02
Acc/Dec time
1
0
1
2
3
4
5
6
7
10
11
-
20.000 s
30.14
10 = 1 s
20.000 s
10 = 1 s
60.000 s
10 = 1 s