Faldic MHT259a (RYS-L type) Error AL OC: Overcurrent, output overcurrent

AC Servo System · taken from the manufacturer’s manual, pages cited

Alarm codeAL OC

Overcurrent, output overcurrent means the amplifier’s output current exceeded its specified limit. The manual's first action is: “The output current from the amplifier to the motor exceeded a specified value.”

Model
Faldic MHT259a (RYS-L type)
Display shows
Overcurrent, output overcurrent (AL OC)
Type
Alarm code
Source
Manual p. 326

What AL OC means

Overcurrent, output overcurrent p. 332

Common causes

  • Overcurrent, output overcurrent p. 332
  • Contents of alarm p. 332
  • Cause, check and remedy p. 332

What to do

  1. The output current from the amplifier to the motor exceeded a specified value. p. 332
  2. The power wiring to the motor may be short-circuited or grounded. As a general rule, minimum insulation resistance between motor terminals and grounding (earth) terminal (symbol "E" or "\u201c") is about 1 [M\u03A9]. The motor winding resistance value between each phase is as same. p. 332

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

If AL OC is still not resolved

  • contact service / dealer p. 3
    “reference must be made to this manual and other related documents.”
  • contact service / dealer p. 4
    “Customers, who want to use the products introduced in this manual for special systems or devices such as for atomic-energy control, aerospace use, medical use, and traffic control, are requested to consult the Fuji.”
Open the manual at page 326 All MHT259a (RYS-L type) error codes Manual details & download

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