Siemens SINUMERIK 840D Description Of Functions page 291

11.03
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Alarm No. NCK
27010
27023
27024
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This state is only active from time to time as the described acceptance test
mode has some associated internal and extensive consequences. It is de-
selected using the following conditions:
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Acceptance tests For test steps associated with group 2 – this also involves testing the SE
without acceptance response – under defined secondary conditions, an additional state is active
test mode that has specific internal features to support the test procedure.
This acceptance test (group 2) becomes active under the following secondary
conditions (in a test of group 2):
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© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
a traversing speed greater than the actual SG monitoring without having to
change the selected reference (setpoint) speed limiting.
SI POWER ON alarms can be temporarily acknowledged with a reset so
that after an SBH response has been tested for an axis, an NCK reset
does not have to be initiated for the fault acknowledgement. The
acknowledgement criteria for the following alarms is involved:
Alarm No. drive
300907
300901
300900
Traversing motion is possible in spite of the external Stop C/D. This means
that it is also possible to test the active SBH monitoring state that results
from an external Stop.
An active Stop in another axis does not result in the traversing inhibit for
the axis being tested also for the setting MD 36964
$MA_SAFE_IPO_STOP_GROUP = 0 for this axis.
When traversing the axes using the JOG buttons, then the set speed limits
are ignored – such as e.g. MD 32020 $MA_JOG_VELO – and the G0
value is activated as effective limit value (maximum axis speed).
As a result of an NCK Reset
When an internal timer value expires that defines the maximum time that
the state can be active.
This timer value is set in the following machine data
MD 36958 $MA_SAFE_ACCEPTANCE_TST_TIMEOUT (NCK) and
MD 1358 $MD_SAFE_ACC_TEST_TIMEOUT (drive).
Automatically when the measured value trace has been completed.
If the monitoring function to be tested, that was active when selected, is no
longer active; e.g. when changing-over from SBH to SG monitoring with
the mode active.
With the mode active, if the JOG NC mode is no longer active.
There is no active SI power on alarm for the axis to be tested.
The pulses of the axis to be tested are enabled.
JOG is active as NC operating mode
The SI monitoring function selected for the particular test step is active, this
means, for example, that if the SE1 test is selected as test, if SE2 is active,
the acceptance test mode (group 2) is not active.
The NCK monitoring channel allows the mode to be activated through one
channel.
5 Commissioning
5.4 NCK acceptance test support
Alarm text
Tolerance for safe operating stop
exceeded:
STOP B activated
STOP A activated
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