Siemens SINUMERIK 840D sl Function Manual page 635

27004 Axis %1 difference safe input %2, NCK %3, drive %4
Parameter %1 = axis name, spindle number
%2 = monitoring function involved
%3 = interface identifier, NCK input
%4 = interface identifier, drive input
Explanation A difference has been detected at the specified safe input. The state of the specified input signal differs in
the two monitoring channels NCK and drive during the time set in MD36950
$MA_SAFE_MODE_SWITCH_TIME.
Monitoring function involved (%2):
SS/SV difference in SGE "deselect Safe Operating Stop / safely reduced speed"
SS difference in SGE "deselect Safe Operating Stop"
SV difference in SGE "select safely reduced speed"
SP difference in SGE "select safe limit positions"
SVOVR difference in SGE "select SG corrections"
Interface identifier NCK input (SPL interface):
<io> = parameterized system variable range (01=$A_INSID, 02=$A_INSED)
<dword> = system variable - double word (1,2)
<bit> = bit number in the system variable double word (1...32)
<value> = value of the NCK-SGE (0,1)
Interface identifier, drive input (%4):
DBX<byte><bit>=<value>
<byte> = byte number in the axis-specific DB (22, 23, 32, 33)
<bit> = bit number in the byte (0...7)
<value> = value of the drive SGE (0,1)
This alarm can be suppressed using the MD10096 $MN_SAFE_DIAGNOSIS_MASK, bit 0=0.
Response Alarm display
Remedy Check the interface of the safety-related input signals (SPL parameterization, PLC-DB supply).
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
27005 Axis %1 error for crosswise data comparison: Static actual value difference
Parameter %1 = axis name, spindle number
Explanation A difference in the actual values was detected using the crosswise data comparison between NCK and drive
monitoring channel. This difference is greater than the maximum tolerance defined in MD36942
$MA_SAFE_POS_TOL. This can be checked using the safe position actual values of the two monitoring
channels displayed in the service screen. The alarm is only displayed, if monitoring with absolute reference
(SE/SN) has been enabled for the specified axis and if the user agreement has been set. The alarm is cleared
as soon as the user agreement is deleted or the actual difference between the two monitoring channels again
drops below the maximum permissible difference.
Response Alarm display
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
11.2 NCK safety alarms for SINUMERIK 840D sl
Diagnostics
635