Siemens SIMATIC S7-300 Manual page 244
Fm 354 servo drive positioning module
Hide thumbs
Also See for SIMATIC S7-300:
- Manual (676 pages) ,
- Reference manual (574 pages) ,
- Installation and operating manual (356 pages)
Table of Contents
Description of Functions
Synchronization
Creating the position reference between the internal FM position value and
mechanical position of the axis.
Measured value
Irrespective of the approach direction, the synchronization point can be lo-
synchronization
cated on the side of the lower or the higher actual position values in relation
with incremental
to the reference point switch position. It is demarcated by the rising edge of a
encoders
zero pulse or by the reference point switch. This selection is made by the
MD18 (together with the approach direction).
Example
With reference to the synchronization point, the reference point can be lo-
cated on the side of the lower or the higher position actual values. In the "ref-
erence point approach" operating mode the machine axis additionally tra-
verses this distance, during its last phase of motion, once the synchronization
point has been found. Consequently, the axis halts the motion, in each
instance, exactly on the reference point.
Example
9-68
zero pulse
Measurement grid
Cyclical zero mark
Variant 1
Variant 2
RV –
Measurement grid
Cyclical zero mark
RV – Reference point offset
Axis direction +
RPS
Synchronization point
Axis direction +
RV +
Axis direction +
Synchronization point
Reference point
FM 354 Servo Drive Positioning Module
- Quick Links:
- Table of Contents
- Troubleshooting
- Troubleshooting
Hide quick links:
Table of Contents
Troubleshooting
