Interaction With Other Functions - Siemens Sinumerik 840D sl Function Manual

Interaction with other functions

11.1 Limiting the speed setpoint
The setpoint speed is parameterized as a function of the active safety monitoring
in MD36933 $MA_SAFE_DES_VELO_LIMIT. This machine data is not incorpora-
ted in the axis--specific checksum MD36998 $MA_SAFE_ACT_CHECKSUM, so
that changes can be made to the MD for the acceptance test without having to
again change the checksum.
If the spindle speed is limited by the SG--specific setpoint limiting, then this is
displayed using the axis--specific status signal DB3x.DBX83.1.
MD = 0%:
Setpoint limiting not active
MD > 0%:
Setpoint limiting = active SG limit multiplied by the MD value
For SBH, setpoint limit = 0
MD = 100%:
Setpoint limit = active SG limit
For SBH, setpoint limit = 0
S The function is effective in one channel in the NCK interpolator. The safety
monitoring channel provides a limit value that corresponds to the selected
safety monitoring type.
S This function influences both axes and spindles.
S The active setpoint limit can be viewed in the safety service screen:
Display value = --1.
Display value >= 0.
S The setpoint limit is changed--over when the SGE is changed--over:
SGE
SGE
SGE
SGE
Further, internal changeover operations in SBH have an effect as a result of a
stop response (STOP D, C, E).
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
corresponds to "setpoint limiting not active"
corresponds to "setpoint limiting active"
"SBH/SG deselection"
"SBH deselection"
"active SG stage, bits 0,1"
"SG override, bits 0, 1, 2, 3"
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