Lenze 8400 - Manual (Page 187)

Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
187
5 Motor control (MCTRL)
5.7 Sensorless vector control (SLVC)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.7.2.2 Torque control with speed limitation
A torque setpoint is defined for the drive system to be used during torque-controlled operation.
Unlike the Speed control with torque limitation , this control mode uses the speed controller for
speed limitation.
• Due to its limitation, the speed-controlled drive can only rotate within a speed range whose
positive speed is limited by nSpeedHighLimit_a and whose negative speed is limited by
nSpeedLowLimit_a.
• The speed is defined by the process.
• The torque setpoint is calculated directly from nTorqueSetValue_a.
• From version 12.00.00 onwards, the torque limitation is active via nTorqueMotLimit_a and
nTorqueGenLimit_a in this control mode, too, for the torque setpoint to be limited. The
torque limitation can be deactivated in C2865/1 via bit 0 to obtain the previous function.

Note!
Absolute speed limitation to speed 0 min -1 (nSpeedLowLimit_a or
nSpeedHighLimit_a = 0) is only possible from version 12.00.00 .
Identifier
DIS code | data type
Information/possible settings
nTorqueSetValue_a
C00830/27 | INT
Torque setpoint / additive torque
• Scaling: 16384 ≡ 100 % M
max
( C00057 )
nSpeedHighLimit_a
C00830/88 | INT
Upper speed limit for speed limitation
(only for torque-controlled operation)
• Scaling: 16384 ≡ 100 % rated speed ( C00011 )
nSpeedLowLimit_a
C00830/23 | INT
Lower speed limit for speed limitation
(only for torque-controlled operation)
• Scaling: 16384 ≡ 100 % rated speed ( C00011 )
nTorqueMotLimit_a
C00830/29 | INT
Torque limitation in motor mode
• Scaling: 16384 ≡ 100 % M
max
( C00057 )
• Setting range: 0 … +199.99 %
• If keypad control is performed: Parameterisable via C00728/1 .
nTorqueGenLimit_a
C00830/28 | INT
Torque limitation in generator mode
• Scaling: 16384 ≡ 100 % M
max
( C00057 )
• Setting range: -199.99 ... 0 %
• If keypad control is performed: Parameterisable via C00728/2 .