Safety chain & e-stop alarms: 48 alarm codes

Continuity of one series loop: e-stop buttons, door switches, light curtains, safety relays and the enabling device e-stop / door / curtain -> safety relay (dual channel) -> controller safety input -> motor-off and brake apply

Inspection line: the first step is always measuring loop continuity and confirming both channels switch together

Spares we carry: we stock along the loop: safety relays, common door switches, e-stop buttons, light-curtain pairs and terminal blocks

Most frequent causes (by pages seen)

• A safety device on the stop inputs (door, light curtain, PLC stop) opened (seen on 1 pages)
• Switching from automatic to manual mode, which always enters guard stop (seen on 1 pages)
• An E-stop button on the cell, FlexPendant or operator panel is pressed (seen on 1 pages)
• E-stop chain wiring open or damaged (seen on 1 pages)
• Safety limits edited to impossible values (seen on 1 pages)
• Safety I/O assigned but not wired (seen on 1 pages)

All 48 codes, grouped by brand

FANUC 16 KUKA 4 AUBO 3 EFORT 3 JAKA 3 Universal Robots 3 ABB 2 EPSON 2 OMRON 2 ROKAE 2 Staubli 2 YASKAWA 2 ESTUN 1 INOVANCE 1 Kawasaki 1 NACHI 1

• ABB 10012 — Guard Stop (Protective Stop) State
• ABB 10013 — Emergency Stop State
• AUBO 20002 — Safety Configuration Error
• AUBO 30001 — Collision Detected
• AUBO 30002 — Emergency Stop Active
• EFORT 1801 — Safety Circuit Major Fault (EC2-S)
• EFORT 1802 — Emergency Stop Active (EC2-S)
• EFORT 1810 — Enable Switch Fault (EC2-S)
• EPSON 4105 — Emergency Connector Connection Failure
• EPSON 4150 — Redundant Input Signal Failure of Emergency Stop
• ESTUN e-11 — Emergency Stop Circuit Open
• FANUC srvo-004 — Fence Open (Legacy RJ3)
• FANUC srvo-005 — Robot Overtravel
• FANUC srvo-006 — Hand Broken (HBK)
• FANUC srvo-007 — External Emergency Stop (Legacy)
• FANUC srvo-105 — Door Open or E.Stop
• FANUC srvo-201 — Panel E-Stop
• FANUC srvo-202 — TP E-Stop
• FANUC srvo-204 — External E-Stop (SVEMG Abnormal)
• FANUC srvo-230 — Chain 1 (+24V) Abnormal
• FANUC srvo-231 — Chain 2 (0V) Abnormal
• FANUC srvo-232 — NTED Input Abnormal
• FANUC srvo-235 — Short-Term Chain Abnormal
• FANUC srvo-271 — EXEMG1 Status Abnormal
• FANUC srvo-277 — Panel E-Stop (SVEMG Abnormal)
• FANUC srvo-280 — SVOFF Input
• FANUC srvo-348 — DCS MCC OFF Alarm
• INOVANCE 0x9001 — Safety Chain Open (IRCB501 Controller)
• JAKA 0x000035 — Collision Detected
• JAKA 0x0f0102 — Emergency Stop Active
• JAKA 0x0f0103 — Safety I/O Configuration Error
• KUKA 1001 — Operator Safety Acknowledgment Required
• KUKA 1002 — Drives-On Not Asserted ($DRIVES_ON)
• KUKA 1010 — Move Enable Missing — E-Stop or Safety Relay Open
• KUKA 15074 — Safety Junction Error in Drive — Channel N
• Kawasaki e1027 — Safety Circuit Cut
• NACHI e0062 — Emergency Stop or MSHP Cut
• OMRON es — E-Stop Active
• OMRON s — Safety System Fault (Code N)
• ROKAE 15000 — Safety Stop / E-Stop Chain Open
• ROKAE 15010 — Protective Stop Triggered
• Staubli armpowerrefused — Arm Power Enable Request Refused
• Staubli estopchain — Emergency Stop Circuit Open — Power Cannot Enable
• Universal Robots c152 — Protective Stop — Position Close to Safety Plane Limits
• Universal Robots c191a1 — Safety Violation — Joint Position Limit Violated
• Universal Robots c191a2 — Safety Violation — Joint Speed Limit Violated
• YASKAWA 1219 — Enable Switch Sticking (DX100/DX200/YRC1000)
• YASKAWA 4780 — F-SAFE Error — Safety Range/Speed Limit Violation