Siemens SINAMICS S120 - Page 411

Appendix
A.5 System rules, sampling times and DRIVE-CLiQ wiring
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
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]
Cycle times [ms]
Number
Current controller
Speed controller
Position controller
Positioner
Axes
Infeed
250
250
2
8
6
1 [250 μs]
250
250
1
4
5
1 [250 μs]
125 125 1 4 4 1 [250 μs]
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.