How do I fix Siemens SINUMERIK alarm 26005?

1. Please inform the authorized personnel/service department. 2. The nominal output voltage in [%] of the maximum setpoint value (10 V) is entered in the MD32250 $MA_RATED_OUTVAL, at which the rated motor speed in [degrees/ s] is to be reached (MD32260 $MA_RATED_VELO). 3. Clear alarm with the RESET key in all channels of this mode group. Restart part program

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Overtravel/Limit · Intermediate · 30-120 minutes

Alarm 26005

Siemens 26005 - Axis parameterization error: output rating

Alarm 26005 fires when the analog speed setpoint output rating parameters are misconfigured or set to zero, preventing proper velocity command evaluation in the NCK. This occurs when MD 32250 (RATED_OUTVAL) or MD 32260 (RATED_VELO) contains invalid zero values, breaking the output-to-velocity scaling chain for the specified axis.

Siemens SINUMERIKOvertravel/LimitIntermediate30-120 minutes

26005

Siemens 26005 - Axis parameterization error: output rating

Axis parameterization error: output rating

For analog drives: The output evaluation of the analog speed setpoint set in the MD32250 $MA_RATED_OUTVAL or in MD 32260 $MA_RATED_VELO is zero. For PROFIdrive drives: (ADI4, SIMODRIVE 611U, SINAMICS): The effective output evaluation of the speed setpoint interface is zero: - b. The corresponding drive-side standardizing parameter is zero, invalid or unreadable/unavailable although an automatic interface scaling adjustment has been selected on account of MD32250 $MA_RATED_OUTVAL=0. The drive parameter defining the standard is not determined by PROFIdrive, but is specific to the manufacturer (see the relevant drive documentation: For SIMODRIVE 611U: p880; for SINAMICS: p2000). The alarm can be reprogrammed in the MD11412 $MN_ALARM_REACTION_CHAN_NOREADY (channel not ready) Control reaction: Mode group not ready. The NC switches to follow-up mode. Channel not ready. NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Channel not ready.

Root Cause Summary

Safety

Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.

Causes and Fixes

1
Access Siemens SINUMERIK HMI or TIA Portal and navigate to Machine Data → Axis [%1] → Analog Output.
2
Locate MD 32250 RATED_OUTVAL (typically ±10V or ±20mA depending on drive interface). Verify the value matches your analog drive interface specification from the servo amplifier documentation.
Do not leave this parameter blank or zero; typical values are 10.0 for voltage or 20.0 for current.
3
If using current-loop interface, ensure MD 32250 is set to the rated drive input current (e.g., 20mA). If voltage-loop, set to rated voltage (e.g., 10V).
4
Perform machine data save and axis re-initialization via NCK → Axis → Parameter Download to validate the new setting.

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