Vacon 100 Flow Error 50: AI low fault

Vacon 100 Flow drive · taken from the manufacturer’s manual, pages cited

Fault code50

One or more analogue input signals are below 50% of the minimum signal range due to a defective cable, loose connection, or malfunctioning source. The manual's first action is: “Replace the defective parts. Do a check of the analogue input circuit. Make sure that parameter AI1 Signal Range is set correctly.”

Model
Vacon 100 Flow
Display shows
AI low fault (50)
Type
Fault code
Source
Manual p. 375

What 50 means

AI low fault p. 375

Common causes

  • 1 or more of the available analogue input signals is below 50% of the minimum signal range. A control cable is defective or loose. A malfunction in a signal source. p. 375

What to do

  1. Replace the defective parts. Do a check of the analogue input circuit. Make sure that parameter AI1 Signal Range is set correctly. p. 375

Before you service the product, read the safety instructions in the manual p. 88.

If 50 is still not resolved

  • contact your nearest service center or partner. p. 201
    “If the access code is lost, contact your nearest service center or partner.”
  • Go into the submenu Reset faults and use the parameter Reset Faults. p. 187
    “Go into the submenu Reset faults and use the parameter Reset Faults.”
Open the manual at page 375 All 100 Flow error codes Manual details & download

This page summarises what the manufacturer’s manual says about 50; 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 Vacon. Found a mistake? Report an error.