Siemens SINUMERIK 840D sl Function Manual page 261

03.06
36949
MD number
Default value: 6.0
Change becomes effective after: Power ON
Data type: DOUBLE
Significance:
corresponds with...
Additional references
36950
MD number
Default value: 0.5
Change becomes effective after: Power ON
Data type: DOUBLE
Significance:
Special cases, errors,...
Additional references
© Siemens AG, 2006. All rights reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
$MA_SAFE_SLIP_VELO_T OL
Speed tolerance, slip
Min. input limit: 0.
Protection level: 7/2
Velocity difference that, for a 2-encoder system, is tolerated between the motor and load
sides without the crosswise data comparison between the drive and NCK signaling an
error.
MD 36949 is only evaluated if MD $MA_SAFE_FUNCTION_ENABLE, bit 3 is set.
Refer to Subsection 5.4.6: Actual value synchronization
$MA_SAFE_MODE_SWITCH_TIME
Tolerance time for SGE changeover
Min. input limit: 0
Protection level: 7/2
SGE changeover operations do not take effect simultaneously owing to variations in run
times (propagation times) for SGE data transmission in the two monitoring channels. A
crosswise data comparison would, in this case, output an error message.
This data is used to specify the period of time after SGE changeover operations during
which no crosswise comparison of actual values and monitoring results is carried-out
(machine data is still compared!). The selected monitoring functions continue to operate
unhindered in both monitoring channels.
A safety-related function is immediately activated in a monitoring channel if selection or
changeover is detected in this channel.
The different run time (propagation time) is mainly caused by the PLC cycle time.
Refer to Section 7.1: "safety-related input/output signals (SGE/SGA)"
8.1 Machine data for SINUMERIK 840D sl
Max. input limit: 6000.0
Max. input limit: 10
Data Description
Units: mm/min, rev/min
Units: s
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