Siemens Sinumerik 840C Diagnostics Manual page 62

1 Alarms
1.5.1 Alarm description
3087 Error in transformation data
S
Scan
At POWER ON
S
On warm restart
S
Effect
Selected transformation data block is locked
Explanation
An NC machine data with an illegal value is present in the selected transformation data block. The invalid NC ma-
chine data number is entered in the block number of alarm 3087.
S
Remedy
Check NC machine data for transformation data (block number of alarm 3087)
Note
Alarm is displayed with reference to block and channel
3088 F collapse at block change
Scan
Processing in a channel with FIFO memory
Effect
None
Explanation
The programmed feedrate is too high. The control has not yet prepared the next block for processing.
S
Remedy
Decrease feedrate
S
Program G171 (to bridge the critical point with a rapid block change)
3091 Reduction on SW prelimit switch
S
Scan
In AUTOMATIC or MDA when processing a part program block or when positioning the axes in JOG
S
Effect
Speed reduction to the value set in the machine data
Explanation
The software prelimit switch has been exceeded and the axis speed is decelerated to the reduction speed (MD1).
If a position behind the software prelimit switch is taken with rapid traverse G00, the alarm "Reduction on SW preli-
mit switch" is not output. But the reduction is executed.
S
Remedy
Check the traversing block
S
Check value in NC machine data 1100 "Prelimit switch"
S
Position axis beyond the prelimit switch range and cancel the alarm by means of "Acknowledgement".
3092 Specified velocity too high
S
Scan
When traversing by the program in AUTOMATIC or MDA
S
Effect
Machining stops
Explanation
The specified speed (either programmed or by setting an override) is greater than the path speeds resulting from
the maximum speeds of the axes
In a circle block, the path velocity is reduced to the smallest velocity of the axes involved.
S
Remedy
Program a lower path speed or check override
S
Check NC machine data "Maximum velocity"
S
Program a smaller spindle speed with G95
3093 G171 not allowed
Scan
After programming G171
S
Effect
Function is not executed
Explanation
G171 is illegal for the following reasons:
S
No FIFO has been assigned to the current channel
S
"FIFO" has not been activated.
S
Remedy
Program a lower path speed or check override
S
Check NC machine data "Maximum speed"
S
Program a smaller spindle speed with G95
Note
Channel-specific
Applies up to SW 2
1–54
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SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
Acknowledgement key
Acknowledgement key
Acknowledgement key
Acknowledgement key
Acknowledgement key