Siemens Sinumerik 840C Diagnostics Manual page 76

1 Alarms
1.5.1 Alarm description
1172* Speed limit exceeded
Scan
Cyclic in servo cycle when LINK ON has been set for the following axis (from servo)
Effect
No reaction, machining not interrupted; the speed of the following axis is limited to the programmed maximum
value; the setpoint determined by the compensatory controller is not used in the calculation.
Explanation
The maximum value set for the following axis/spindle has been exceeded. Synchronism is in danger.
Remedy
Reduce feedrate or speed of leading axes. Check the speed limit value. Check the link factors.
Note
Applies as from SW 3
1176* Acceleration limit exceeded
Scan
Cyclic in servo cycle when LINK ON has been set for the following axis and MD bit "Suppression of acceleration
limitation" is not set (from servo).
Effect
No reaction. Machining is not interrupted; when interface signal "Acceleration limitation synchronous" is set; travel
is continued at maximum acceleration; any suppressed partial setpoints are traversed afterwards;
If interface signal "Acceleration limit synchronous" has not been set; any suppressed partial setpoints are not tra-
versed. The setpoint determined by the compensatory controller is not used in the calculation.
Explanation
The maximum value programmed for the following axis has been exceeded. Synchronism is in danger.
Remedy
Reduce the acceleration of the leading axes. Check the acceleration limit value. Check the link factors. Set MD bit
"Suppress acceleration limitation".
Note
Applies as from SW 3
1180* Following spindle corrected autom.
Scan
An error has occurred that has cancelled "Mode Group Ready".
Scan
Cyclic in servo cycle when LINK ON is set
Effect
Machining is interrupted. Interlocking of NC START: switchover to actual position link.
Explanation
An error has occurred for an axis/spindle in the mode group which usually causes a switch over to follow-up mode.
As long as the following axis is not affected by the fault, the link is maintained until "Delay controlled follow-up" has
been executed.
Remedy
Remove error from faulty axis/spindle.
Note
Applies as from SW 3
1192* Centering edge violated
Scan
Cyclic in IPO cycle when LINK ON and PLC interface signal "Semi-automatic centring is active" are set.
Effect
Interlocking of NC START, any movement towards edges already recognized are suppressed.
Explanation
The alarm is set when the axis tries to traverse across an edge that has already been recognized or if PLC inter-
face signal "Semi-automatic centring on" and "First edge approached" have been set without first traversing the
following axis.
Remedy
Move following axis away from the edge (in opposite direction to approach direction: if necessary remove interface
signal "x edge approached" traverse at least 1 increment between interface signal "Semi-automatic centring on"
and "First edge approached".
Note
Applies as from SW 3 up to SW 4.3
1192* No synchronous/switching positions defined
Scan
When synchronizing or switching on in relation to a position from PLC.
Effect
Interlocking of NC START, MACHINING STOP
Explanation
An attempt has been made to synchronize master and slave axes/spindles from PLC, or to switch on with
reference to a position, without there being any valid switching or synchronizing positions. Synchronization or
switching on with reference to a position is therefore not possible.
Remedy
For example, specified positions through the GI input display.
Note
Applies as from SW 4.4
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SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
Acknowledgement key
Acknowledgement key
Reset key
Acknowledgement key
Reset key