Lenze 8400 - Page 408

7 Technology applications
7.3 TA "actuating drive speed (AC Drive Profile)"
408
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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nBoost_a
INT
Additional setpoint for the motor voltage at speed = 0
• The entire voltage-frequency characteristic is provided with an offset.
• Scaling: 16384 ≡ 1000 V
 Stop!
Values selected too high may cause the motor to heat up due to the resulting
current!
nPWMAngleOffset
INT
Additional offset for the electrical angle of rotation
• If a torque is connected, e.g. dynamic acceleration processes can be generated.
• Scaling: ±32767 ≡ ±180 ° angle of rotation
nTorqueMotLim_a
nTorqueGenLim_a
INT
Torque limitation in motor mode and in generator mode (speed mode)
or torque setpoint selection (torque mode)
When "speed mode" is set, the following applies:
• The torque limitation in motor mode and generator mode are determined via
nTorqueMotLim_a.
•The nTorqueGenLim_a input is not effective.
When "torque mode" is set, the following applies:
• The torque setpoint is determined via nTorqueGenLim_a.
•The nTorqueMotLim_a input is not effective.
More notes for both inputs:
• These input signals are directly transferred to the motor control to limit the
inverter's maximum torque in motor and 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:
bSetSpeedCcw
BOOL
Change of direction of rotation
• For instance if a motor or gearbox is fixed laterally reversed to a machine part, but
the setpoint selection should still be executed for the positive direction of
rotation.
• Input only effective in case of local control (NetCtrl=0)
FALSE Clockwise rotation (Cw)
TRUE Direction of rotation to the left (Ccw)
bRLQCw
BOOL
Activate clockwise rotation (fail-safe)
• For a detailed functional description see the L_RLQ
FB.
FALSE Quick stop
TRUE CW rotation
Designator
Data type
Information/possible settings
n
N
M
N
M
-M
N
-n
N
n
TorqueMotLim
TorqueGenLim
TorqueMotLim
TorqueMotLim
TorqueGenLim