Robotics in Manufacturing
SRVO-214

SRVO-214: 6ch amplifier fuse blown

Fuse FS2 or FS3 inside the numbered 6-axis servo amplifier has blown - or the familiar aux-axis configuration error is masquerading as it.

What it means

Fuse FS2 or FS3 inside the numbered 6-axis servo amplifier has blown - or the familiar aux-axis configuration error is masquerading as it.

Common causes

Ranked by what technicians most often find, most likely first.

  1. Blown FS2/FS3 in the amplifier - eliminate the cause before replacing.
  2. Configuration: αiSV-driven axis with amplifier type wrongly set to 1, or duplicated amplifier number.
  3. Failed amplifier.

How to fix it

  1. Check the aux-axis amplifier type/number configuration first - the documented soft cause.
  2. If the fuse is blown, find the overload cause, then replace the fuse.
  3. Replace the 6-axis amplifier if it keeps taking fuses. Qualified personnel; the amplifier carries lethal voltage and its bus capacitors hold charge after power-off.

Quick facts

Category
Servo
Affected series
R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
Alarm family
SRVO

Related codes

Verified against FANUC documentation (B-83284EN-1).Last reviewed: 2026-07-09.Editorial process