4 Data Descriptions
11.03
4.2 Machine data for SIMODRIVE 611 digital
© Siemens AG 2003 All Rights Reserved
4-248
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
$MD_SAFE_POS_TOL. If this value is exceeded, STOP F is initiated with fine
code 3 or 44-57 (actual value comparison or dynamic limit value comparison).
1350
$MD_SAFE_MODE_SWITCH_TIME
611 digital
Tolerance time for SGE changeover
Relevant for:
FD/MSD
Unit:
ms
Default:
500
Minimum value:
0
Maximum value:
10 000
Data type:
float
Becomes
effective:
POWER ON
Timer for SGE changes. The timer is started every time new SGEs are
accepted. The new monitoring functions are immediately active, however, the
crosswise comparison of the result lists, position actual value and dynamic
position limit values must be delayed for a specific time as the two monitoring
channels cannot detect the SGE changes at precisely the same time.
Note
System-dependent minimum tolerance time:
2 x PLC cycle time (maximum cycle) + 1 x IPO cycle time
The variations in runtime in the external circuitry (e.g. relay operating times)
must also be taken into account.
1351
$MD_SAFE_VELO_SWITCH_DELAY
611 digital
Delay time speed changeover
Relevant for:
FD/MSD
Unit:
ms
Default:
100
Minimum value:
0
Maximum value:
10 000
Data type:
float
Becomes
effective:
POWER ON
Timer for the SGE delay timer.
The timer is started at the transition from the safely-reduced speed function to
the safe operating stop mode or when the speed monitoring limit is reduced to
a lower speed. During this period, the last selected SG limit remains active.
Example:
1. The timer is interrupted as soon as a higher or identical SG limit (i.e. to that
which was previously active) is selected.
2. The timer is immediately stopped if a changeover is made to "non-safe
operation" (=NSB SGE "de-select SBH/SG=1).
3. The timer is restarted if an SG limit, lower than the one previously active, is
selected or a changeover made to SBH while the timer is running.
1352
$MD_SAFE_STOP_SWITCH_TIME_C
611 digital
Transition time from STOP C to safe operating stop
Relevant for:
FD/MSD
Unit:
ms
Default:
100
Minimum value:
0
Maximum value:
10 000
Data type:
float
Becomes
effective:
POWER ON
When the time in this timer expires, a transition is made from STOP C (initiated
by SG or SE) to SBH.
After the time has elapsed, the axis/spindle is monitored for a safe operating
stop. If it has still not reached zero speed, a STOP A or STOP B is initiated.
