160
Operating Instructions ACU
12/16
15.6.3
Fixed percentages
The four fixed percentages define reference values which are selected via
the Fixed Percent
Change-Over 1
75
and
Fixed Percent Change-Over 2
76
. The
Reference Percentage Source
476
defines the addition of the various sources in the reference frequency channel.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
520 Fixed Percentage 1
-300.00 %
300.00 %
0.00 %
521 Fixed Percentage 2
-300.00 %
300.00 %
20.00 %
522 Fixed Percentage 3
-300.00 %
300.00 %
50.00 %
523 Fixed Percentage 4
-300.00 %
300.00 %
100.00 %
By combining the logic states of the fixed percentage change-over modes 1 and 2, fixed percentages
1 through 4 can be selected:
Fixed percentage control
Fixed
Percent
Change-Over 1
75
Fixed
Percent
Change-Over 2
76
Function / active fixed value
0
0
Fixed Percentage 1
520
1
0
Fixed Percentage 2
521
1
1
Fixed Percentage 3
522
0
1
Fixed Percentage 4
523
0 = Contact open
1 = Contact closed
15.7
Frequency ramps
The ramps determine how quickly the frequency value is changed if the reference value changes or
after a start, stop or brake command. The maximum admissible ramp gradient can be selected
according to the application and the current consumption of the motor.
If the settings of the frequency ramps are identical for both directions of rotation, the
parameterization via the parameters
Acceleration (Clockwise)
420
and
Deceleration (Clockwise)
421
is sufficient. The values of the frequency ramps are applied to
Acceleration Anticlockwise
422
and
Deceleration Anticlockwise
423
if these have been parameterized to the factory setting of -
0.01 Hz/s.
The parameter value of 0.00 Hz/s for the acceleration blocks the corresponding direction of rotation.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
420 Acceleration (Clockwise)
0.00 Hz/s
9999.99 Hz/s
5.00 Hz/s
421 Deceleration (Clockwise)
0.01 Hz/s
9999.99 Hz/s
5.00 Hz/s
422 Acceleration Anticlockwise
- 0.01 Hz/s
1)
9999.99 Hz/s
- 0.01 Hz/s
423 Deceleration Anticlockwise
- 0.01 Hz/s
2)
9999.99 Hz/s
- 0.01 Hz/s
1)
Value -0.01 Hz/s means that the value of
Acceleration (Clockwise)
420
is used.
2)
Value -0.01 Hz/s means that the value of
Deceleration (Clockwise)
421
is used.
Setting 0.00 Hz/s will not accelerate nor decelerate the drive due to the limitation of
the ramp.
The ramps for
Emergency Stop Clockwise
424
and
Emergency Stop Anticlockwise
425
of the drive
to be activated via
Operation Mode
630
for the stopping behavior must be selected according to the
application. The non-linear (S-shaped) course of the ramps is not active in the case of an emergency
stop of the drive.
Содержание active cube 201
Страница 1: ...ACTIVE CUBE Operating Instructions Frequency inverter 230 V 400 V 0 25 kW 132 kW...
Страница 2: ......
Страница 45: ...12 16 Operating Instructions ACU 45...
Страница 181: ...12 16 Operating Instructions ACU 181...
Страница 284: ......