Siemens SINAMICS S120 Commissioning Manual page 411

Using EPOS
The following table lists the number of axes that can be operated with a SINAMICS S120
when using a "basic positioner" (EPOS) function module. The number of axes depends on
the current controller sampling time.
Table A- 11 Sampling times when using EPOS
Cycle times [µs]
Current controller Speed controller
250
250
125
The CPU processing time required for the EPOS function module (with 1 ms position
controller/4 ms positioner) corresponds to the same CPU processing time of 0.5 V/f axes
with 500 μs.
Use of the SINAMICS Web server
The available computation time can be used for the SINAMICS Web server. The following
supplementary condition applies here:
● The utilization of the system (r9976) must be less than 90%!
● A maximum of five users can access data on the same drive via the SINAMICS Web
server.
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
Cycle times [ms]
Position controller
250 2
250 1
125 1
A.5 System rules, sampling times and DRIVE-CLiQ wiring
Positioner
8
4
4
Appendix
Number
Axes Infeed
6 1 [250 μs]
5 1 [250 μs]
4 1 [250 μs]
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