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FANUC Alarm ISD-021 — WARN Low pressure (sup-Mat2) (ISD…)

Manufacturer wording — WARN Low pressure (sup-Mat2) (ISD%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC ISD-021 (“WARN Low pressure (sup-Mat2) (ISD…)”): This error is posted when the system detects inadequate pressure in the second material supply. First check: -  Make sure the supply line is ok.

Updated 2026-09-17 · LogrobotLM reference

Description

This error is posted when the system detects inadequate pressure in the second material supply. This condition is usually caused by one or more of the following:

Remedy

-  Make sure the supply line is ok. -  Make sure the low pressure limit value is appropriate. -  Make sure the low pressure time out value is appropriate.

Related codes

ISD-019WARN Low pressure (disp-Mat2) (ISD…)ISD-020WARN High pressure (sup-Mat2) (ISD…)ISD-022WARN Premature switching req (ISD…)ISD-023WARN Meter switching fault (ISD…)

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 →