Lenze ECSCSxxx - Manual (Page 332)

Function library
Speed (speed control)
Setting of motor control
12
l
332 EDBCSXS064 EN 4.0
12.27.3 Setting of motor control
12.27.3.1 Torque setpoint/additional setpoint
SPEED−MCTRL.MAdd (C7431/5) serves as a torque setpoint or additional torque setpoint,
depending on the setting of SPEED−MCTRL.NMSwt (C7411/11). The controller calculates
the maximum possible torque from the motor parameters. You can read it off C0057.
ƒ Torque setpointorque setpoint"#
– If SPEED−MCTRL.NMSwt = TRUE, the torque control is active.
– SPEED−MCTRL.MAdd acts as torque setpoint.
– The speed controllers carry out a monitoring function.
– The torque setpoint is defined in [%] of the maximum possible torque.
– Negative values cause a torque in CCW rotation of the motor.
– Positive values cause a torque in CW rotation of the motor.
ƒ Additional torque setpoint "additional torque setpoint"#
– If SPEED−MCTRL.NMSwt = FALSE, the speed control is active.
– SPEED−MCTRL.MAdd is added to the output of the speed controller.
– The limits determined by the torque limitation SPEED−MCTRL.NegLoMLim
(C7431/3) and SPEED−MCTRL.HiMLim (C7431/4) are not exceeded.
– The additional torque setpoint is used e. g. for friction compensation or increase in
acceleration (dv/dt).
12.27.3.2 Torque limitation
An external torque limitation can be set via SPEED−MCTRL.NegLoMLim (C7431/3) and
SPEED−MCTRL.HiMLim (C7431/4). This enables you to select different torques for the
quadrants "driving" and "braking".
ƒ SPEED−MCTRL.HiMLim is the upper limit in [%] of the maximum possible torque.
ƒ SPEED−MCTRL.LoMLim is the lower limit [%] of the maximum possible torque.
The maximum possible torque depends on the motor parameters (C0057).
)
Note!
In case of quick stop (QSP), the torque limitation is switched to an inactive
state, i. e. the operation runs with ±100 %.