Mitsubishi Electric AL.33

Brand: Mitsubishi ElectricModel: PLC (FX5U / iQ-R / iQ-F Series)Error code: AL.33

What the Fault Means

Overvoltage

Likely causes

  • DC bus overvoltage during rapid deceleration

Solution and Safe First Checks

  1. Add/enlarge external regenerative resistor; increase deceleration time

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Mitsubishi Electric error codes

Source: the Zeror.ai industrial fault database and Mitsubishi Electric technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.

Mitsubishi Electric AL.33 · Zeror.ai