Nc-Controlled Esr; Nc-Controlled Retraction (Polf, Polfa, Polfmask, Polfmlin) - Siemens SINUMERIK 840D sl Programming Manual

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Function enable

The functions generator operation, shutdown, retraction are released by setting the

corresponding control signal $AA_ESR_ENABLE. This control signal can be changed by

synchronized actions.

Function triggering

ESR is triggered jointly for all enabled axes by setting the system variable

$AC_ESR_TRIGGER.

Generator operation is "automatically" activated in the drive when an imminent DC link

undervoltage is detected.

Drive-independent stopping and/or retraction become active when a communication failure

(between the NC and drive) is detected and when a DC link undervoltage is detected in the

drive (configuration and enable required).

Drive-independent stopping and/or retraction can also be triggered by the NC by setting the

appropriate control signal $AN_ESR_TRIGGER (broadcast command to all drives).

For detailed information on ESR, see:

Function Manual, Special Functions; Extended Stop and Retract (R3)

NC-controlled ESR

Certain initial conditions are required for NC-controlled retraction (see "NC-controlled

retraction (POLF, POLFA, POLFMASK, POLFMLIN) (Page 617)"). When these requirements

have been satisfied, then the rapid lift (LIFTFAST) configured for retraction axis(axes) in the

channel is activated by setting the system variable $AC_ESR_TRIGGER (or

$AA_ESR_TRIGGER for single axes).

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Programming Manual, 03/2013, 6FC5398-2BP40-3BA1

Additional functions

16.11 Extended stop and retract (ESR)

Sinumerik 828d Sinumerik 840de sl