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6
Positioning mode
112
Festo – GDCP-CMMS/D-FW-EN – 1404NH – English
6
Positioning mode
6.1
Function: Position control
In the positioning mode, the motor controller receives the positioning setpoint value(position/position
record number) via the control interface (fieldbus/digital inputs).
–
In the direct, individual record, record linking, homing and jog modes, the point-to-point positioning
(trapezoidal speed curve) is calculated in the controller-internal positioning controller from the
positioning parameters and passed on as position/speed setpoint values.
–
In the case of interpolating positioning mode, the interpolated positioning curve is calculated in the
interpolator and passed on as position/speed setpoint values.
The regulator cascade (position, speed and current regulator) processes the deviation between set-
point value and actual value and thus controls the output stage and the connected motor.
Current control
(Torque)
CMMS/CMMD
Control section
Speed regu-
lator
Position
controller
Power section
Output stage
M
Motor
Motor encoder
Actual position value
Actual speed value
Actual current value
–
–
–
+
+
+
Position setpoint
value
Speed setpoint value
Current setpoint
value
Controller-internal positioning control
Control interfaces
Interpolator
Speed pilot control
Fig. 6.1
Overview: Position control
Содержание CMMD-AS series
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