9300 Servo PLC
System blocks
2.13 Internal motor control (MCTRL_MotorControl)
2-54
9300ServoPLC EN 1.4
2.13.8 Quickstop QSP
The quick stop function is used to stop the drive independently of the setpoint input, within a time
to be set.
MCTRL_bNMSwt_b
MCTRL_nHiMLim_a
MCTRL_nLoMLim_a
MCTRL_bILoad_b
MCTRL_bQspOut_b
C0907/3
C0907/2
C0906/3
C0906/4
OR
DCTRL_bQspIn_b
Any Variable
Abb. 2-29 Programming the QSP-function, if SB DCTRL is to trigger QSP
The Quickstop function is active if
MCTRL_bQsp_b
=TRUE
If the SB DCTRL is to trigger QSP, program the QSP-function according to Abb. 2-29.
Function:
• If torque control is selected, this will be deactivated. The drive is controlled by the speed
controller.
• The speed decelerates to zero, with the deceleration time set under C0105.
• The torque limiting
MCTRL_nLoMLim_a
and
MCTRL_nHiMLim_a
are switched to inactive.
• The phase controller is activated. If the rotor position is shifted actively, the drive generates a
torque against this displacement, if
– C0254 is not zero
–
MCTRL_nPosLim_a
triggered with a value > 0%.
Stop!
If the field is weakened manually (
MCTRL_nFldWeak_a
< 100%), the drive cannot supply the
maximum torque.
2.13.9 Field weakening
The field weakening does not have to be set if the motor type was set under under C0086. All
necessary settings are done automatically. The motor is operated in the field weakening, if:
• the output voltage of the controller exceeds the rated motor voltage set under C0090.
• the controller can no longer increase the output voltage with increasing speed, due to the
mains voltage or DC bus voltage.
Manual field weakening
A manual field weakening is possible via
MCTRL_nFldWeak_a
For max. excitation,
MCTRL_nFldWeak_a
must have +100% (= 16384)applied.
Stop!
The available torque is reduced by the field weakening.
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