Lenze Drive PLC Developer Studio 9300 Servo PLC (V8.x) - Manual (Page 67)

9300 Servo PLC
System blocks
2.12 MCTRL_MotorControl (node number 131)
2−53
L
9300 Servo PLC EN 5.0
Signal limitation
If the drive outputs the maximum torque, the speed controller operates within the limitation.
·
The drive cannot follow the speed setpoint.
·
MCTRL_bMMax_b is set to TRUE.
Set integral action component
To select defined starting values for the torque, the integral action component of the speed controller
can be set externally (e.g. when using the brake control).
·
MCTRL_bILoad_b = TRUE
– The speed controller accepts the value at MCTRL_nISet_a for its integral action component.
– The value at MCTRL_nISet_a acts as a torque setpoint for the motor control.
·
MCTRL_bILoad_b = FALSE
– Function is switched off.
2.12.8 Torque control with speed limitation
Set MCTRL_bNMSwt_b = TRUE to activate this function.
·
For limiting the speed, a second speed controller (auxiliary speed controller) is connected.
·
MCTRL_nMAdd_a acts as a bipolar torque setpoint.
·
The speed controller 1 generates the upper speed limit.
– The upper speed limit is passed to MCTRL_nNSet_a in [%] of n
max
(positive sign for CW direction of rotation).
·
The speed controller 2 (auxiliary speed controller) generates the lower speed limit.
– The lower speed limit is passed to MCTRL_nNStartLim_a in [%] of n
max
(negative sign for CCW direction of rotation).
·
n
max
is selected under C0011. ( ^ 2−51)
Stop!
Use
·
the upper speed limit only for CW rotation (positive values) and
·
the lower speed limit only for CCW rotation (negative values),
otherwise the drive can accelerate in an uncontrolled way!