Siemens SINUMERIK 840D Description Of Functions page 364

7 Configuring example
7.2 Circuit examples
Setting-up with the protective door open
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Setting-up with the protective door closed
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Production with the protective door open:
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Production with the protective door closed:
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Once the safety functions have been defined function charts are drawn up for
Function charts
the individual functions to which the
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refer.
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Safely-reduced speed (SG1)
(example values) 2m/min 50 rpm
The axes and spindles must stop when the door is opened, or the speed of
axis/spindle must be < SG1 (this must be ensured by the PLC user
program).
The PLC program interlocks the NC modes MDA and AUTO.
Safely-reduced speed (SG2)
(example values) 10 m/min
(drives are monitored for maximum speed).
When the door is closed, Safety Integrated automatically changes over to
the SG2 limit
All NC operating modes are permitted when the protective door is closed.
The NC operating modes MDA and AUTO are disabled by the PLC
program – automatic mode is not permitted when the protective door is
open.
The safety function safe operating stop (SBH) is activated with the key-
operated switch position "Production" when the protective door is open.
This means that the drive is monitored for zero speed.
The axes and the spindle must stop when the protective door is opened
(this must be controlled by the PLC user program)
Safely-reduced speed (SG2) )
(example values)
When the door is closed, Safety Integrated automatically changes-over to
the SG2 limit
All operating modes are permitted when the protective door is closed.
SPL program
PLC program
Circuit diagram and
Machine data configuration
spindle axes
spindle axes
2000 rpm
axes spindle
10 m/min 2000 rpm
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11.03