Lenze 8400 - Page 313

Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 313
5 Motor control (MCTRL)
5.15 Internal interfaces | System block "LS_MotorInterface"
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
nTorqueMotLimit_a
C00830/29 | INT
nTorqueGenLimit_a
C00830/28 | INT
Torque limitation in motor mode and in generator mode
• The drive cannot output a higher torque in motor/generator mode than set here.
• The applied values (any polarity) are internally interpreted as absolute values.
• If V/f characteristic control (VFCplus) is selected, limitation is indirectly
performed via a so-called I
max
controller.
• If sensorless vector control (SLVC) or servo control (SC) is selected, limitation has
a direct
effect on the torque-producing current component.
• Scaling: 16384 ≡ 100 % M
max
(C00057)
Torque limits in motor and generator mode:
bTorqueInterpolatorOn
C00833/29 | BOOL
Torque setpoint interpolation
FALSE Deactivate interpolation
TRUE Activate interpolation
nVoltageAdd_a
C00830/31 | INT
Additive voltage impression
• An additional setpoint for the motor voltage can be specified via this process
input.
• If there are, for instance, different loads at the motor output end, it is possible to
apply a voltage boost at the starting time.
• If the value is negative, the voltage is reduced.
• Scaling: 16384 ≡ 1000 V
This process signal also serves to implement a load adaptation.
Example of V/f characteristic control (VFCplus): Adaptation of the voltage
characteristic as a function of the load in motor mode/in generator mode in case of
CW/CCW rotation
• CW rotation in motor mode: Increase voltage
• CCW rotation in generator mode: Reduce voltage
 Stop!
Values selected too high may cause the motor to heat up due to the resulting
current!
bAutoBoostOn
C00833/32 | BOOL
(from version 04.00.00)
Reserved
Designator
DIS code | data type
Information/possible settings
n
N
M
N
M
-M
N
-n
N
n
TorqueMotLim
TorqueGenLim
TorqueMotLim
TorqueMotLim
TorqueGenLim
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