FANUC Alarm SRVO-296 — SERVO PSM DISCHG alm
Error- Hardware
- cabinet cooling
- Controllers
- R-J3iB / R-30iA
- FANUC class
- SERVO
Manufacturer wording — SERVO PSM DISCHG alm(G:%d A:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC SRVO-296 (“SERVO PSM DISCHG alm”): PSM control power is low voltage Cable between PSM and SVM is disconnected PSM is abnormal. First check: Change cable between PSM and SVM Change PSM.
Updated 2026-10-22 · LogrobotLM reference
Description
PSM control power is low voltage Cable between PSM and SVM is disconnected PSM is abnormal. Or SVM is abnormal
Remedy
Change cable between PSM and SVM Change PSM. Or change SVM
Field diagnosis
The fan of the power supply module discharge resistor has stopped, or the resistor is overloaded.
What to check
- Check that the resistor fan rotates and replace it; reduce the taught speeds; as a last resort, replace the power supply module.
- Note: PSM version of SRVO-043.
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 →