Incremental Encoder Functionality - Siemens Sinumerik 840D sl Function Manual

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Interaction with other functions

11.6 Incremental encoder functionality

Parking an axis with absolute reference (SE/SN)

As a result of the fact that the actual value sensing of the two safety monitoring

channels NCK and SINAMICS S120 has been disabled, then the absolute refer-

ence of the axis is no longer detected in a safety--related fashion. The safety moni-

toring channels then respond as follows:

-- Alarms 27000/C01797 are displayed "Axis no longer safely referenced"

-- SGA "Axis safely referenced" cancelled on NCK and drive side

These alarms are only displayed for axes for which safety monitoring functions with

absolute reference are activated, i.e. for SE and SN. Alarms are not displayed for

axes that do not have these monitoring functions.

Machine data 36965 $MA_SAFE_PARK_ALARM_SUPPRESS can be used to

suppress Alarms 27000/C01797 until parking has been withdrawn.

If "parking axis" was not requested, however "parking active" is signaled from the

drive or encoder, then Alarm 27001 is output with fine code 1025.

When a drive object that has Safety Integrated functions released is switched to

"Parking" state, the Safety Integrated software responds by activating STO without

generating a separate message.

Incremental encoder functionality

The function "Save actual value with incremental encoder" is enabled in MD

$MA_ENC_REFP_STATE for the parameterizable incremental encoder, and a

monitoring function with absolute reference (SE/SN) is enabled in MD

$MA_SAFE_FUNCTION_ENABLE. This combination of functions is not permitted.

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

Sinamics s120