I²t function, Positioning controller, 3 i²t function – Festo Контроллер двигателя CMMD-AS User Manual

Page 51: 4 positioning controller

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3. Product description

Festo P.BE-CMMD-AS-HW-EN 1002NH

51

3.7.3

I²t function

An integrator monitors the current²-time integral of the motor controller. As soon as the
parameterized time is exceeded, a warning message is output and the maximum current is
limited to the rated current.

3.7.4

Positioning controller

A positioning control system is set above the current controller. Up to 64 positions
(homing + 63 positions) can be selected per axis and run via a trajectory generator.
There are also volatile position data records for positioning via the fieldbus.

The position records are made up of a position value and a motion profile. The following
parameters can be set for the eight positioning profiles:

- Travel speed
- Acceleration
- Delay
- Smoothing
- Time
- Start delay
- Final speed
- Wait for current positioning, reject or ignore initial instruction.


From every position record, any other position record can be started directly. You can
transition to a new position record without first coming to a standstill.

The parameter sets can be called up as follows:

- over digital inputs (position record 0 ... 63 per axis)
- over the RS232 interface (for test purposes only) or
- over a fieldbus interface.

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