ABB ACQ580 Firmware Manual page 177

No. Name/Value
28.57 Critical frequency 3
high
-500.00...500.00
Hz
28.72 Freq acceleration
time 1
0.000...1800.000 s
28.73 Freq deceleration
time 1
0.000...1800.000 s
28.76 Freq ramp in zero
source
Active
Inactive
DI1
DI2
DI3
DI4
DI5
DI6
Other [bit]
28.82 Shape time 1
0.000...1800.000 s
28.92 Frequency ref act 3
-500.00
...500.00 Hz
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.
Defines acceleration time 1 as the time required for the
frequency to change from zero to the frequency defined by
parameter 46.02 Frequency
been reached, the acceleration continues with the same rate
to the value defined by parameter
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.
Selects a source that forces the frequency reference to zero.
0 = Force frequency reference to zero
1 = Normal operation
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
Source selection (see Terms and abbreviations
Defines the shape of acceleration ramp at the beginning of
acceleration.
Shape time 1.
Displays the frequency reference after selection
Ext1/Ext2 selection). See the control chain diagram on page
404.
This parameter is read-only.
Frequency reference after selection.
low.
scaling. After this frequency has
30.14 Maximum
(not from parameter
(30.30 Overvoltage
status, bit 0).
status, bit 1).
status, bit 2).
status, bit 3).
status, bit 4).
status, bit 5).
on page 100). -
(19.11
Parameters 173
Def/FbEq16
0.00 Hz
See par.
46.02
5.0 s
frequency.
10 = 1 s
5.0 s
10 = 1 s
Inactive
0
1
2
3
4
5
6
7
0.000
10 = 1 s
-
See par.
46.02