GE Industrial Solutions AF-650 GP General Purpose Drive Programming Guide - Manual (Page 84)

SP-55 Output Filter
Option: Function:
[2] Sine-
Wave
Filter
Fixed
This parameter sets a minimum allowed limit to
the switching frequency and ensures that the filter
will be operated within the safe range of switching
frequencies. Operation is possible with all control
principles. For FLUX control principle the
parameters SP-56 Capacitance Output Filter and
SP-57 Inductance Output Filter have to be
programmed (these parameters have no effect in
Advanced Vector Control and U/f). The modulation
pattern will be set to SFAVM which gives the
lowest acoustic noise in the filter. Always set
SP-55 Output Filter to [2] Sine-wave fixed when
using a sine-wave filter.
SP-56 Capacitance Output Filter
Range: Function:
2.0 uF * [0.1 - 6500
uF]
Set the capacitance of the output filter.
The value can be found on the filter label.
NOTE
This is required for correct compen-
sation in Flux mode (H-41 Motor
Control Principle)
SP-57 Inductance Output Filter
Range: Function:
7.000
mH *
[0.001 - 65
mH]
Set the inductance of the output filter.
The value can be found on the filter
label.
NOTE
This is required for correct
compensation in Flux mode
(H-41 Motor Control Principle)
SP-59 Actual Number of Inverter Units
Range: Function:
1 * [1 - 1] Set the actual number of power units.
3.9.6 SP-7# Additional ADD/DEC Settings
Parameters to configure the jerk compensations for S-
Ramps settings on Accel/Decel Ramps 1 through 4.
For each of four ramps (parameter groups F-0#, E-1#, H-0#,
SP-7#, SP-8# and SP-9#) configure the ramp parameters:
ramp type, ramping times (duration of acceleration and
deceleration) and level of jerk compensation for S ramps.
Start by setting the linear ramping times corresponding to
the figures.
If S-ramps are selected then set the level of non-linear jerk
compensation required. Set jerk compensation by defining
the proportion of ramp-up and ramp-down times where
acceleration and deceleration are variable (i.e. increasing or
decreasing). The S-ramp acceleration and deceleration
settings are defined as a percentage of the actual ramp
time.
SP-71 Accel Time 1 S-ramp Ratio at Accel. Start
Range: Function:
50 % * [1 - 99 %] Enter the proportion of the total accel time
(F-07 Accel Time 1) in which the acceleration
torque increases. The larger the percentage
value, the greater the jerk compensation
achieved, and thus the lower the torque jerks
occurring in the application.
SP-72 Accel Time 1 S-ramp Ratio at Accel. End
Range: Function:
50 % * [1 - 99 %] Enter the proportion of the total accel time
(F-07 Accel Time 1) in which the acceleration
torque decreases. The larger the percentage
value, the greater the jerk compensation
achieved, and thus the lower the torque jerks
in the application.
SP-73 Decel Time 1 S-ramp Ratio at Decel. Start
Range: Function:
50 % * [1 - 99 %] Enter the proportion of the total decel time
(F-08 Decel Time 1) where the deceleration
torque increases. The larger the percentage
value, the greater the jerk compensation
achieved, and thus the lower the torque jerks
in the application.
SP-74 Decel Time 1 S-ramp Ratio at Decel. End
Range: Function:
50 % * [1 - 99 %] Enter the proportion of the total decel time
(F-08 Decel Time 1) where the deceleration
torque decreases. The larger the percentage
value, the greater the jerk compensation
achieved, and thus the lower the torque jerks
in the application.
SP-76 Accel/Decel Time 2 Type
Option: Function:
Select the ramp type, depending on
requirements for acceleration/deceleration. A
linear ramp will give constant acceleration
during ramping. An S-ramp will give non-
linear acceleration, compensating for jerk in
the application.
[0] * Linear
[1] S-ramp Const
Jerk
Acceleration with lowest possible jerk
Parameter Descriptions AF-650 GP Programming Guide
DET-618C 83
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