Drive & power stage alarms: 68 alarm codes

The fault sits on the energy chain: mains input, rectification, DC bus, braking resistor, inverter power devices and the drive board three-phase mains -> rectifier -> DC bus (bus capacitors) -> brake chopper / braking resistor -> inverter (IGBT) -> motor

Inspection line: measure the incoming three-phase voltage for balance and the DC bus against its rated window first, then check braking-resistor value and capacitor condition

Spares we carry: we stock the van along the energy chain: braking resistors, bus capacitors, input fuses, drive-board supply parts and the common power modules for the brand

Most frequent causes (by pages seen)

• High ambient temperature (seen on 3 pages)
• Motor cable short or connector contamination (seen on 2 pages)
• Motor winding insulation failure (seen on 2 pages)
• Braking resistor open or disconnected (seen on 2 pages)
• Blown input fuse or open phase (seen on 2 pages)
• Cabinet cooling fan failure or clogged filters (seen on 2 pages)

All 68 codes, grouped by brand

ESTUN 7 KUKA 7 YASKAWA 7 EPSON 6 INOVANCE 6 NACHI 5 OMRON 5 ABB 4 EFORT 4 Kawasaki 4 Staubli 4 Universal Robots 3 AUBO 2 JAKA 2 ROKAE 2

• ABB 34200 — Communication with All Drive Units Interrupted
• ABB 34251 — Missing Phase of Input Power
• ABB 34316 — Motor Current Error
• ABB 34400 — DC Link Voltage Too High
• AUBO 10001 — Joint Overcurrent (JOINT_ERR)
• AUBO 10007 — Joint Voltage Abnormal (JOINT_ERR)
• EFORT 1001 — Drive Overcurrent (TSINO Servo)
• EFORT 1010 — Drive DC Bus Overvoltage (TSINO)
• EFORT 1011 — Drive DC Bus Undervoltage (TSINO)
• EFORT 1020 — Motor Overload (TSINO)
• EPSON 4152 — Relay Welding Error of Main Circuit
• EPSON 4154 — Regeneration Resistor Overtemperature
• EPSON 5040 — Motor Torque Output Failure — High Power State
• EPSON 5048 — Overvoltage of Main Power Circuit
• EPSON 5049 — Overcurrent of Motor Driver
• EPSON 5054 — Motor Overload (Duty)
• ESTUN a-02 — Parameter Setting Error
• ESTUN a-10 — Overcurrent
• ESTUN a-30 — Regeneration Error / Regenerative Overload
• ESTUN a-40 — Main Circuit Overvoltage
• ESTUN a-41 — Main Circuit Undervoltage
• ESTUN a-71 — Overload — Instantaneous High Load
• ESTUN a-72 — Overload — Continuous Over-torque
• INOVANCE er-201 — Hardware Overcurrent
• INOVANCE er-210 — Motor Overload
• INOVANCE er-400 — Main Circuit Overvoltage
• INOVANCE er-410 — Main Circuit Undervoltage
• INOVANCE er-610 — Drive Overload (I2t)
• INOVANCE er-920 — Regenerative Overload
• JAKA 0x000031 — Bus Voltage Abnormal
• JAKA 0x000032 — Motor Overcurrent
• KUKA 12005 — Ballast Resistor Temperature Sensor — Wire Disconnection
• KUKA 26012 — General Servo Error (Drive N)
• KUKA 26013 — General Inverter Failure (Drive N)
• KUKA 26107 — KSP DC Link Overvoltage (Axis N)
• KUKA 26108 — KSP DC Link Undervoltage (Axis N)
• KUKA 26111 — KSP Device Overtemperature (Axis N)
• KUKA 26122 — KSP Braking Resistor Fault (Axis N)
• Kawasaki d1028 — Servo Board DC Power Abnormal (Servo FPGA)
• Kawasaki d1562 — Power Sequence Board — AC External Voltage Too High
• Kawasaki e1028 — Motor Overload (Axis XX)
• Kawasaki e1294 — Servo Board IO 24V Dropped
• NACHI e0028 — Motor Power Voltage Drop
• NACHI e0032 — Overcurrent
• NACHI e0038 — Overload
• NACHI e0042 — Motor Temperature Rise Abnormal
• NACHI e0044 — Motor Power Overvoltage
• OMRON 24 — 24V Supply Fault
• OMRON a — Amplifier Fault (Joint N)
• OMRON d-1021 — Duty Cycle Exceeded (Joint N)
• OMRON high-temp-amp — High Temperature — Amplifier (Joint N)
• OMRON hv — High Voltage Bus Fault
• ROKAE 10014 — Servo Drive Fault / Not Ready
• ROKAE 13200 — Bus Voltage Abnormal
• Staubli 24vext — External 24V Supply Fault (Safety System Dropout)
• Staubli dcbusuv — DC Bus Undervoltage at Power-Up (Pre-charge Failure)
• Staubli overtemp — Drive / Cabinet Overtemperature
• Staubli seg-4 — Amplifier Fault — DF Contactor Open (7-Segment Code 4)
• Universal Robots c50a102 — 48V Power Supply — Voltage Rising Too Slowly
• Universal Robots c55a34 — Current Distributor / Safety Relay Error
• Universal Robots c72a2 — Power Supply Cannot Deliver 48V
• YASKAWA a-100 — Overcurrent or Heat Sink Overheated (SERVOPACK)
• YASKAWA a-320 — Regenerative Overload
• YASKAWA a-400 — Overvoltage — Main Circuit DC Voltage Too High
• YASKAWA a-410 — Undervoltage — Main Circuit DC Voltage Too Low
• YASKAWA a-710 — Overload — High Load (Stall-level Torque)
• YASKAWA a-720 — Overload — Low Load (Continuous Over-torque)
• YASKAWA a-7a0 — Heat Sink Overheated (>100 degC)