Siemens CU240S Error F00028: Power limit exceeded during regeneration

Siemens CU240S · taken from the manufacturer’s manual, pages cited

Fault codeF00028

Power limit exceeded during regeneration occurs when motor is driven by active load causing excessive regeneration, or at high load inertias during ramp down. The manual's first action is: “Reduce regeneration from active load”

Model
Siemens CU240S
Display shows
Power limit exceeded during regeneration (F00028)
Type
Fault code
Source
Manual p. 382

What F00028 means

Power limit exceeded during regeneration p. 382

Common causes

  • Occurs if motor is driven by an active load, causing motor to go into excessive regeneration. p. 382
  • Occurs at very high load inertias, when ramping down. p. 382
  • Increase Imax regeneration limit in p1253 p. 382

What to do

  1. Reduce regeneration from active load p. 382
  2. Reduce ramp down rate p. 382

If F00028 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.

Open the manual at page 382 All CU240S error codes Manual details & download

This page summarises what the manufacturer’s manual says about F00028; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.