What causes fault code SAF-001 (Safety Light Curtain Fault)?

Emitter and receiver misaligned — vibration or physical impact. Lens dirty — dust, grease, or moisture on optical surface. Cable damage on emitter or receiver unit. Internal fault — component failure in light curtain unit. External light source interference — direct sunlight or other light curtain

How do I fix fault code SAF-001?

Clean both emitter and receiver lenses with soft dry cloth. Check alignment indicators on both units — must show aligned. Realign units if needed — follow manufacturer alignment procedure. Inspect cables for damage — especially at connector and flex points. Shield from external light sources if interference suspected. If internal fault, replace the faulted unit (emitter or receiver)

Safety Light Curtain Fault

SAF-001

Safety light curtain reports internal fault or alignment error. Machine is locked out until fault is cleared.

critical general packaging palletizer conveyor

safety light curtain alignment lockout

Probable Causes (ranked)

Emitter and receiver misaligned — vibration or physical impact
Lens dirty — dust, grease, or moisture on optical surface
Cable damage on emitter or receiver unit
Internal fault — component failure in light curtain unit
External light source interference — direct sunlight or other light curtain

Fix Steps

1 Clean both emitter and receiver lenses with soft dry cloth
2 Check alignment indicators on both units — must show aligned
3 Realign units if needed — follow manufacturer alignment procedure
4 Inspect cables for damage — especially at connector and flex points
5 Shield from external light sources if interference suspected
6 If internal fault, replace the faulted unit (emitter or receiver)

Field Trick

Most light curtain faults are dirty lenses or misalignment from vibration. Clean first, realign second, replace last.

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