Mitsubishi Electric FX5 Error 1A4DH: Process alarm upper-lower limit value setting range error

PLC · taken from the manufacturer’s manual, pages cited

Error code1A4DH

The value not meeting the following conditions was set to CH□ process alarm upper-upper limit value to CH□ process alarm lower-lower limit value. The manual's first action is: “Reset CH□ process alarm upper-upper limit value to CH□ process alarm lower-lower limit value to the value meeting the following conditions. Upper-upper limit value≥Upper-lower limit value2Lower-upper limit value≤Lower-lower limit value”

Model
Mitsubishi Electric FX5
Display shows
Process alarm upper-lower limit value setting range error (1A4DH)
Type
Error code
Source
Manual p. 62

What 1A4DH means

Process alarm upper-lower limit value setting range error p. 62

Common causes

  • The value not meeting the following conditions was set to CH□ process alarm upper-upper limit value to CH□ process alarm lower-lower limit value. p. 62

What to do

  1. Reset CH□ process alarm upper-upper limit value to CH□ process alarm lower-lower limit value to the value meeting the following conditions. Upper-upper limit value≥Upper-lower limit value2Lower-upper limit value≤Lower-lower limit value p. 62

Before you service the product, read the safety instructions in the manual p. 3.

If 1A4DH is still not resolved

  • contact service / dealer p. 3
    “It is important to follow all precautions for personal safety.”
  • contact service / dealer p. 4
    “Failure to do so may cause electric shock or damage to the product.”

This page summarises what the manufacturer’s manual says about 1A4DH; 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 Mitsubishi Electric. Found a mistake? Report an error.