Siemens Sinumerik 840C Diagnostics Manual page 24

1 Alarms
1.5.1 Alarm description
72 Too many fictitious axes
S
Scan
At POWER ON or warm restart
S
Effect
Interlocking of NC START
S
Interlocking of Mode Group Ready
S
Interlocking of NC Ready relay
S
Machining stops
Explanation
More fictitious axes than are permitted were defined in axis-specific machine data bits 564* during installation.
Remedy
Correct axis-specific machine data bits 564*.
73 Axis preset in wrong mode group
S
Scan
At POWER ON or warm restart
S
Effect
Interlocking of NC START
S
Interlocking of Mode Group Ready
S
Interlocking of NC Ready relay
S
Machining not possible
Explanation
At start-up, an incorrect assignment of NC machine data was made or the assignment of axis selector switch with
2 machine control panels is incorrect or a wrong axis is set in the program.
Remedy
Check and correct NC machine data "Axis valid in mode group".
S
Correct program
S
POWER ON
74 Too many drives
S
Scan
At POWER ON or warm restart
S
Effect
Interlocking of NC START
S
Interlocking of Mode Group Ready
S
Interlocking of NC Ready relay
S
Machining stops
S
Surplus axes do not appear in the service display
Explanation
The total number of spindles and real axes defined during installation is greater than permitted.
Remedy
Correct axis-specific machine data bits 564* and spindle-specific machine data bits 521*.
75 Max. number of meas. circuits exceeded
S
Scan
At POWER ON or warm restart
S
Effect
Interlocking of NC START
S
Interlocking of Mode Group Ready
S
Interlocking of NC Ready relay
S
Machining stops
S
Surplus axes do not appear in the service display
Explanation
Output of alarm if too many axes and spindles are defined.
Remedy
Reduce the number of axes (MD 564*) and spindles (MD 512*).
Note
Axes/spindles that are not assigned to a measuring circuit are included in the number of measuring circuits.
77 Mode group no. of axis invalid
S
Scan
At POWER ON
S
Effect
Interlocking of NC START
S
Interlocking of Mode Group Ready
S
Interlocking of NC Ready relay
S
Interlocking of machining
Explanation
Check and correct machine data for axis assignment and spindle assignment.
S
Remedy
Check and correct machine data for "Axis valid in mode group"
S
Perform POWER ON
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
POWER ON
POWER ON
POWER ON
POWER ON
POWER ON