Measuring Systems; Basics On Measuring Systems, Resolution - Bosch Rexroth IndraDrive MPH-02 Functional Description

5-50
Motor, Mechanical Axis System, Measuring Systems
"Third-Party Motor Dialog" in
DriveTop
Further Notes on
Commissioning
5.4

Measuring Systems

Basics on Measuring Systems, Resolution

Control Loops and Measuring
Systems
Possibilities of Position
Measuring
• C3205 Incorrect input for power factor
• C3206 Incorrect input for power
• C3207 Type plate list incomplete
• C3208 Error when writing parameters
With the commissioning tool "DriveTop" the output data of the third-party
motor can be entered via a so-called "third-party motor dialog". In the
dialog the requirements are checked and finally the values of the motor
parameters are calculated.
The motor parameter values are stored in a file. During commissioning
they can be loaded to the controller.
See chapter "Commissioning"
Brief Description
Operating drives in the closed control loop requires measuring systems in
order to metrologically acquire the current status of the physical value to
be controlled, the so-called actual value.
The following drive control loops are distinguished:
• torque/force control loop: actual value by evaluating the current
measuring system and converting the value
• velocity control loop: actual value by evaluating the position measuring
system and time-derivation
• position control loop: actual value by evaluating the position measuring
system
The actual value of the torque/force control loop is generated by means of
the internal current measurement. The measuring system is inaccessible
for the user and has a fixed configuration.
For acquiring the actual values of the velocity and position control loop
there are position measuring systems available that provide the user
possibilities of configuration. Position measurement can be carried out
• at the motor only (measurement via motor encoder)
- or -
• both at the motor and at the mechanical axis system (measurement
via motor encoder and "external" or "optional" encoder).
Note: Position measurement via motor encoder is always required,
measurement at the mechanical axis system is optional, the
encoder at the mechanical axis system is therefore called
"optional" encoder. It is also called "external" encoder because
this encoder is not installed internally at the motor, but
externally at the axis.
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P