Siemens Micromaster 420 Parameter List

About this manual

This document is a comprehensive reference for the MICROMASTER 420 inverter. It lists every configurable parameter in functional order, explains the data types, units, default values, and access levels, and includes function diagrams, alarm messages, and quick‑commissioning procedures.

The parameter list is intended to be used together with the Operating Instructions or Reference Manual. It shows how to reset the drive to factory defaults, how to filter parameters by functional group, and how to interpret alarm codes for troubleshooting.

What's inside

• Parameters
• Function Diagrams
• Faults and Alarms
• Quick Commissioning
• Parameter Description
• Seven‑segment Display
• User Access Levels

Specifications

Frequently asked questions

What does alarm A0501 indicate?

It signals a current‑limit condition, usually caused by motor power not matching the inverter power or short motor leads.