FANUC Alarm SRVO-297 — SERVO PSM LowVolt alm
Error- Hardware
- servo amplifier
- Controllers
- R-J3iB / R-30iA / R-30iB
- FANUC class
- SERVO
Manufacturer wording — SERVO PSM LowVolt alm(G:%d A:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SRVO-297 (“SERVO PSM LowVolt alm”): Calculated velocity value is abnormal on Servo First check: Check status of pulse coders and motors Power off and on to reset
Updated 2026-10-22 · LogrobotLM reference
Description
Calculated velocity value is abnormal on Servo
Remedy
Check status of pulse coders and motors Power off and on to reset
Field diagnosis
The control supply voltage of the power supply module has dropped.
What to check
- Measure the three-phase input; replace the power supply module, then the amplifier module.
- Note: Often preceded by SRVO-134 in the history.
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →