Speed hysteresis v1 for SSM and SSR

• Menu: 4.9.30-1.1-1
• Index: 8706.57[0]

Description

If the actual speed fluctuates around the parameterized limit speed, then the status of the safety sub-functions transferred via the safe process data also fluctuates. To obtain a stable status, a hysteresis value can be assigned to the limit speed.

The parameter is used in the SSM and SSR safety sub-functions.

In the SSM safety sub-function:

• If the limit speed is exceeded, the status of the safety sub-function switches from 1 to 0.
• When the speed drops back below the difference of the limit speed and the hysteresis value, the status of the safety sub-function switches from 0 to 1.

In the SSR safety sub-function:

• If the speed is outside the speed range, the status of the safety sub-function switches from 1 to 0.
• When the sum of the speed range and the hysteresis value is exceeded again, the status of the safety sub-function switches from 0 to 1.