This document is a Siemens variable frequency drive MM4 selection of external resistors for analog input, which introduces how to correctly select external resistors
This document explains how to select the appropriate potentiometer resistance when using the analog input of a Siemens MM4 drive. It outlines the basic principles, limits, and power considerations for external series resistors.
The note also provides a short FAQ that answers common questions about resistance selection, and includes contact information for Siemens A&D Service & Support in China. This manual is written in Chinese.
| Typical potentiometer resistance used | 2 kΩ |
|---|---|
| Reference voltage for analog input | 10 V |