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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 101652 - Below currently valid limit
Alarm 101652 indicates that a programmed or commanded value (such as feed rate, spindle speed, or axis position) has fallen below the currently active lower limit defined by machine data, protection zones, or program constraints. This typically occurs during program execution when calculated values violate minimum thresholds, or when dynamic overrides reduce values beyond permissible ranges.
101652
Siemens 840D 101652 - Below currently valid limit
Below currently valid limit
Siemens SINUMERIK operator message 101652: Below currently valid limit. This is an informational message from the SINUMERIK control indicating a system status or operation result that may require operator action.
Root Cause Summary
Alarm 101652 indicates that a programmed or commanded value (such as feed rate, spindle speed, or axis position) has fallen below the currently active lower limit defined by machine data, protection zones, or program constraints. This typically occurs during program execution when calculated values violate minimum thresholds, or when dynamic overrides reduce values beyond permissible ranges.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Check current feed override and spindle override settings on the HMI. Verify they are not reduced to levels causing calculated values below minimum thresholds.
- 2
Review the active NC program block and verify programmed F (feed) and S (spindle) values are within acceptable ranges. Check for extremely low programmed values.
- 3
Access machine data MD36300 $MA_JOG_AND_POS_FEED_PER_REV_LIMS[0] for minimum feedrate limit and spindle-related MDs (MD35110-35130) for minimum spindle speed. Verify programmed values comply with these limits.
Modifying machine data requires appropriate access level and OEM documentation. Incorrect changes can cause machine malfunction.
- 4
Increase override settings or modify program to use higher F/S values. Reset alarm and restart program execution.
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Always verify with your machine manual or a certified technician before performing service procedures.