Slip Controller - Lenze i55AE125B Manual

Motor control
Optimisation of the control loops
Motor controller settings
Parameter Name / value range / [default setting]
0x2949:002 Negative torque limit source
(P337.02) (Neg. torqlim src)
• From version 03.00
0 (-) Max torque
1 Fixed Limit 0.0 %
2 Analog Input 1
3 Analog Input 2
4 Negative torque limit
5 Network target torque
0x2949:003 Actual positive torque limit
(P337.03) (Act postorqlim)
• Read only: x.x %
• From version 03.00
0x2949:004 Actual negative torque limit
(P337.04) (Act negtorqlim)
• Read only: x.x %
• From version 03.00
0x2DD5 Torque setpoint
• Read only: x.xx Nm
• From version 03.00
8.4.4.9

Slip controller

In case of V/f characteristic control with feedback (VFC closed loop), the slip is calculated and
injected by the slip controller. The default setting of the slip controller provides robustness
and moderate dynamics.
Preconditions
In 0x2C00 (P300.00), the motor control type "V/f characteristic control (VFC closed loop) [7]"
is selected and configured. For details, see chapter
loop)".
^ 172
Details
The slip controller is designed as PI controller.
•
In order to improve the response to setpoint changes, the setpoint speed of setpoint fre-
•
quency is added as feedforward control value to the output (correcting variable) of the slip
controller.
With the setting 0x2B14:003
•
Parameter Name / value range / [default setting]
0x2B14:001 Gain
0.000 ... [0.100] ... 65.535
0x2B14:002 Reset time
0.0 ... [100.0] ... 6553.5 ms
0x2B14:003 Frequency limitation
0.00 ... [10.00] ... 100.00 Hz
210
"V/f characteristic control (VFC closed
= 0 Hz, the slip controller is deactivated.
Info
Selection of the source for the negative torque limit source.
Negative torque limit source = (-) Max torque
Negative torque limit source = 0.0 %.
The negative torque limit source is defined as analog signal via the ana-
log input 1.
4Analog input 1
^ 597
The negative torque limit source is defined as analog signal via the ana-
log input 2.
4Analog input 2
^ 601
Negative torque limit source = Negative torque limit 0x60E1.
The negative torque limit source is defined as process data object via
network.
4Configuring the network
^ 226
Display of the current positive torque limit.
• 100 % ≡ Motor rated torque 0x6076 (P325.00)
Display of the current negative torque limit.
• 100 % ≡ Motor rated torque 0x6076 (P325.00)
Display of the current torque setpoint.
Info
Gain of the slip controller.
Reset time of the slip controller.
Frequency limitation of the slip controller.
• With the setting of 0 Hz, the slip controller is deactivated.
0x6072 (P326.00).