Preventing the mechanical limit speed from being exceeded

To prevent the mechanical limit speed of the encoder from being exceeded, the following overspeed limits are monitored by the MOVISAFE® CSS..A safety options:

Encoder type

Overspeed limit

min-1

Mechanical limit speed of the encoder

min-1

EI7C FS

3800

5700

AK0H, EK0H

6329

9000

AK1H

6445

12000

E.7S, EK8S

5500

6000

A.7W, AK8W

5500

6000

The overspeed limit for the CSA31A safety option can be parameterized in Assist CS.. in the "Encoder functions" tab.

INFORMATION

Exceeding the overspeed limit results in a fault message in the safety option with the fault response "STO" within 11 ms for sin/cos encoders or 13 ms for the EI7C FS built-in encoder. The fault response is executed by the STO circuit within another 2 ms.
Measures in the application must ensure that the mechanical limit speed is not reached during this time (11 ms/13 ms).