Safety Circuit Fault — E-Stop Active

Emergency stop circuit is open. All motion disabled until circuit is restored and acknowledged at HMI.

Probable Causes (ranked)

• E-stop button physically pressed — intentional or accidental contact
• E-stop wiring break in series circuit — corroded terminal or broken conductor
• Safety relay module fault — monitoring circuit detecting wiring issue
• Light curtain triggered and latched — object in beam path
• Gate interlock switch open — access door not fully closed and latched

Fix Steps

1. 1 Walk the entire machine — check every E-stop button, twist/pull to reset each one
2. 2 Check safety relay module LED indicators for fault channel identification
3. 3 Verify all gate interlock switches — close all access gates fully until latch clicks
4. 4 Check light curtain alignment — clear any obstructions from beam path
5. 5 If all devices are clear, check wiring continuity through entire E-stop loop with multimeter
6. 6 Reset safety relay module and acknowledge fault at HMI panel

Suggested Replacement Parts

Parts matched to fault category: Safety Relay

Prices are estimates. Verify part numbers match your equipment before ordering.

Need a deeper diagnosis with photo analysis and AI-powered troubleshooting?