Siemens MICROMASTER 420 Error A0501: Current Limit

Siemens MICROMASTER 420 inverter · taken from the manufacturer’s manual, pages cited

Warning codeA0501

The inverter has detected a current limit condition. The manual's first action is: “Check whether the motor power corresponds to the inverter power”

Model
Siemens MICROMASTER 420
Display shows
Current Limit (A0501)
Type
Warning code
Source
Manual p. 72

What A0501 means

Current Limit p. 72

Common causes

  • Motor power does not correspond to the inverter power p. 72
  • Motor leads are too short p. 72
  • Earth faults p. 72

What to do

  1. Check whether the motor power corresponds to the inverter power p. 72

Before you service the product, read the safety instructions in the manual p. 6.

If A0501 is still not resolved

  • Contact your service dealer for assistance. p. 72
    “Check whether the motor power corresponds to the inverter power”
Open the manual at page 72 All MICROMASTER 420 error codes Manual details & download

This page summarises what the manufacturer’s manual says about A0501; 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.