Operating Instructions ACTIVE 06/07120
120 Operating Instructions ACTIVE 06/07
13.6.3 Fixed Percentages
The four percentage values define reference values which are selected via the parame-
ters
Fixed Percent Change-Over 1 75 and Fixed Percent Change-Over 2 76. The
parameter
Reference Percentage Source 476 defines the addition of the various
sources in the reference percentage channel.
Parameter Settings
No. Description Min. Max. Fact. sett.
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 frequencies 1 through 4 can be selected:
Fixed Percentage Control
Fixed percentage value
change-over 1
75
Fixed percentage value
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
13.7 Frequency ramps
The ramps determine how fast the frequency value is changed if the reference value
changes or after a start, stop or brake command. The maximum admissible ramp gra-
dient 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 taken over for
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 direc-
tion of rotation.
Parameter Settings
No. Description Min. Max. Fact. sett.
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 9999.99 Hz/s -0.01 Hz/s
423 Deceleration Anticlockwise -0.01 Hz/s 9999.99 Hz/s -0.01 Hz/s
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