Siemens Sinumerik 840C Diagnostics Manual page 89

04/96
07/97
1372* Protection zone collision minus
Scan
Cyclic with active function "Collision monitoring"
Parameters
Axis number
Effect
Machining standstill;
disabling of NC Start
Explanation
Overlap of two protection zones has been recognized
Remedy
Travel free and trigger mode group reset
Note
Applies as from SW 6.
1376* Check absolute value encoder position
S
Scan
Loading of complete NC MD files
S
Absolute value encoder available and range expansion of Endat absolute value encoder parameterized
Effect
None
Explanation
Startup, whjich is to be performed by loading an NC MD file, has possibly not yet been terminated on an axis with
absolute value encoder. The start–up engineer must then decide whether further startup steps have to be carried
out. This alarm remains present even after Power Off.
S
Remedy
Bring axes to closed–loop control mode (terminate possible initial clear mode) and check the actual postion
displayed.
S
If the actual postion is not correct (e.g. after loss of data in SRAM through hardware replacement), startup
steps must be carried out.
S
Acknowledge alarm (not possible in initial clear mode!)
2000* LEC – grid spacing illegal
Scan
Cyclic
Effect
Removal of NC START
Explanation
In the case of the spindle (e.g. synchronous spindle mode), a modulo value has been entered for the axis concer-
ned which cannot be divided exactly into 360°, which means that the grid spacing is not equal.
Remedy
Check NC MD* 3440*
Note
Applies as from SW 3
2001* Speed setpoint warning limit responded
Scan
Cyclic
Effect
Interlocking of NC START
S
Explanation
The setpoint on the DAC is higher than entered in NC MD 268* "Max. speed setpoint (DAC)". It is not possible
to increase the setpoint any further.
The alarm 2001* "Speed setpoint warning limit" can occur when an M19 positioning is requested while the
drive unit is not ready (e.g. setpoint cable break: actuator switched off; actuator not enabled by PLC).
S
An incorrect feedback polarity has been parameterized in the spindle positioning mode (sign error).
S
Remedy
Traverse at slower speed
S
Check the actual values (encoder)
S
Check NC MD "Max. speed setpoint (DAC)"
S
Check the drive actuator
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SINUMERIK 840C / SIMODRIVE 611–D (DA)
1 Alarms
1.5.1 Alarm description
RESET
Cancel key
POWER ON
Reset key
1–81