YASKAWA MOTOR DRIVER SIGMA5 ERROR CODE

SIGMA5 ALARM DISPLAY
SIGMA5 ALARM DISPLAY

Comprehensive guide to Yaskawa Sigma-5 servo driver error codes, their causes, and practical troubleshooting steps for efficient fault diagnosis and system recovery.

The following code lists representative error codes of the Sigma-5(with korean)-YASKAWA

์—๋Ÿฌ ์ฝ”๋“œ ์„ค๋ช… (์˜ค๋ฅ˜๋ช…) ์›์ธ ํ•ด๊ฒฐ ๋ฐฉ๋ฒ•
A.020 ๊ณผ์ „๋ฅ˜ (Overcurrent) ๋ชจํ„ฐ์— ๊ณผ๋„ํ•œ ์ „๋ฅ˜๊ฐ€ ํ˜๋ €์Œ (๋‹จ๋ฝ, ๊ธ‰์ •์ง€, ๊ฒฐ์„  ์˜ค๋ฅ˜ ๋“ฑ) ๊ฒฐ์„  ํ™•์ธ, ๊ธฐ๊ณ„ ๋ถ€ํ•˜ ํ™•์ธ, ์ ˆ์—ฐ ์ƒํƒœ ์ ๊ฒ€, ๊ธ‰์ •์ง€ ํ”ผํ•˜๊ธฐ
A.030 ๊ณผ์ „์•• (Overvoltage) ์„œ๋ณด ๋“œ๋ผ์ด๋ธŒ DC ์ „์› ์ „์••์ด ํ—ˆ์šฉ์น˜๋ฅผ ์ดˆ๊ณผํ•จ ํšŒ์ƒ ์ €ํ•ญ ํ™•์ธ, ์ „์› ์ž…๋ ฅ ์ „์•• ์ธก์ •, ๊ฐ์† ์กฐ๊ฑด ์™„ํ™”
A.040 ์ €์ „์•• (Undervoltage) DC ๋ฒ„์Šค ์ „์••์ด ๋„ˆ๋ฌด ๋‚ฎ์Œ ์ „์› ์ž…๋ ฅ ํ™•์ธ, ์ „์› ์ƒํƒœ ์ ๊ฒ€, ๊ณต๊ธ‰ ์ „์•• ์•ˆ์ •ํ™”
A.050 ๊ณผ์—ด (Overheat) ๋“œ๋ผ์ด๋ธŒ ๋‚ด๋ถ€ ์˜จ๋„๊ฐ€ ํ—ˆ์šฉ์น˜ ์ดˆ๊ณผ ๋ƒ‰๊ฐ ํŒฌ ํ™•์ธ, ํ†ตํ’ ์ƒํƒœ ์ ๊ฒ€, ์ฃผ๋ณ€ ์˜จ๋„ ๋‚ฎ์ถค
A.070 ์—”์ฝ”๋” ์˜ค๋ฅ˜ (Encoder Error) ์—”์ฝ”๋” ๊ฒฐ์„  ์˜ค๋ฅ˜ ๋˜๋Š” ์—”์ฝ”๋” ์†์ƒ ์ผ€์ด๋ธ” ์ ๊ฒ€, ์—”์ฝ”๋” ๊ต์ฒด ๋˜๋Š” ์—ฐ๊ฒฐ ์ƒํƒœ ํ™•์ธ
A.080 ๋ธŒ๋ ˆ์ดํฌ ํšŒ๋กœ ์˜ค๋ฅ˜ (Regenerative Overload) ํšŒ์ƒ ์—๋„ˆ์ง€ ํก์ˆ˜ ์‹คํŒจ ํšŒ์ƒ ์ €ํ•ญ ์šฉ๋Ÿ‰ ์ฆ๊ฐ€, ์ €ํ•ญ ์†์ƒ ์—ฌ๋ถ€ ํ™•์ธ
A.090 ํŒŒ๋ผ๋ฏธํ„ฐ ๋ฐ์ดํ„ฐ ์˜ค๋ฅ˜ ์„ค์ • ํŒŒ๋ผ๋ฏธํ„ฐ๊ฐ€ ์ž˜๋ชป๋จ ํŒŒ๋ผ๋ฏธํ„ฐ ์ดˆ๊ธฐํ™” ๋˜๋Š” ์žฌ์„ค์ •
A.100 ์ดˆ๊ณผ ์†๋„ ์˜ค๋ฅ˜ (Overspeed) ๋ช…๋ น์†๋„ > ์ œํ•œ ์†๋„ ์†๋„ ์ œํ•œ ์žฌ์„ค์ •, ๋ช…๋ น๊ฐ’ ํ™•์ธ
A.120 ์œ„์น˜ ์ถ”์ข… ์˜ค๋ฅ˜ (Position Error Overflow) ๋ช…๋ น๊ณผ ์‹ค์ œ ์œ„์น˜ ์ฐจ์ด๊ฐ€ ํผ ์„œ๋ณด ๊ฒŒ์ธ ์กฐ์ •, ๊ธฐ๊ณ„ ๊ตฌ์กฐ์ ๊ฒ€, ํŒŒ๋ผ๋ฏธํ„ฐ ํ™•์ธ
A.130 ๊ณผ๋ถ€ํ•˜ (Overload) ์žฅ์‹œ๊ฐ„ ๊ณผ๋ถ€ํ•˜ ์šด์ „ ๊ธฐ๊ณ„ ๋ถ€ํ•˜ ์ค„์ด๊ธฐ, ๋“€ํ‹ฐ ์‚ฌ์ดํด ์žฌ์กฐ์ •
A.140 ํ†ต์‹  ์˜ค๋ฅ˜ (Communication Error) Host์™€ ํ†ต์‹  ๋ถˆ๋Ÿ‰ (MECHATROLINK, Modbus ๋“ฑ) ํ†ต์‹  ๋ฐฐ์„  ํ™•์ธ, ํ†ต์‹  ํŒŒ๋ผ๋ฏธํ„ฐ ์ ๊ฒ€
A.150 ์ ˆ์—ฐ ์ €ํ•˜ (Insulation Error) ๋ชจํ„ฐ๋‚˜ ์ผ€์ด๋ธ” ์ ˆ์—ฐ ์ €ํ•˜ ๋ชจํ„ฐ ๋ฐ ์ผ€์ด๋ธ” ๊ต์ฒด ๋˜๋Š” ์ ˆ์—ฐ ์ธก์ •
A.170 ์—”์ฝ”๋” ๋ฐฑ์—… ๋ฐฐํ„ฐ๋ฆฌ ๋ถ€์กฑ ์ ˆ๋Œ€์น˜ ์—”์ฝ”๋”์˜ ๋ฐฐํ„ฐ๋ฆฌ ์ „์•• ๋‚ฎ์Œ ๋ฐฐํ„ฐ๋ฆฌ ๊ต์ฒด (ํ†ต์ „ ํ›„ ๊ต์ฒด ๊ถŒ์žฅ)
A.300 ์•ˆ์ „ ํšŒ๋กœ ์ด์ƒ FLS, RLS, Safety ํšŒ๋กœ ์˜ค๋ฅ˜ Safety ๋‹จ์ž ํ™•์ธ, ์ธํ„ฐ๋ก ํšŒ๋กœ ์ ๊ฒ€
A.510 EEPROM ์˜ค๋ฅ˜ ๋‚ด๋ถ€ ๋ฐ์ดํ„ฐ ์ €์žฅ ์˜ค๋ฅ˜ ์ดˆ๊ธฐํ™” ๋˜๋Š” ๋“œ๋ผ์ด๋ฒ„ ๊ต์ฒด
A.520 RAM ์˜ค๋ฅ˜ RAM ์ €์žฅ ๋ฐ์ดํ„ฐ ์˜ค๋ฅ˜ ๋“œ๋ผ์ด๋ฒ„ ๊ต์ฒด ํ•„์š”
A.530 Flash ์˜ค๋ฅ˜ ํ”„๋กœ๊ทธ๋žจ ๋ฉ”๋ชจ๋ฆฌ ์†์ƒ ํŽŒ์›จ์–ด ์žฌ์„ค์น˜ ๋˜๋Š” ๋“œ๋ผ์ด๋ธŒ ๊ต์ฒด
A.710 ๋ถ€ํŠธ ๋ชจ๋“œ ์—๋Ÿฌ ๋“œ๋ผ์ด๋ธŒ ๊ธฐ๋™ ์ค‘ ์ด์ƒ ๋ฐœ์ƒ ์ดˆ๊ธฐํ™” ํ›„ ์žฌ์‹œ์ž‘ ๋˜๋Š” ํŽŒ์›จ์–ด ๋ณต๊ตฌ
A.910 ์•ˆ์ „ ๊ด€๋ จ ํŒŒ๋ผ๋ฏธํ„ฐ ์˜ค๋ฅ˜ FSoE ๋˜๋Š” STO ์„ค์ • ์˜ค๋ฅ˜ Safety ํŒŒ๋ผ๋ฏธํ„ฐ ํ™•์ธ ๋ฐ ์ˆ˜์ •
A.930 ์ œ๋กœ ์„ค์ • ์˜ค๋ฅ˜ ํ™ˆ ํฌ์ง€์…˜ ์„ค์ • ์‹คํŒจ ์ œ๋กœ ์„ค์ • ๋‹ค์‹œ ์‹œ๋„, ์„ค์ • ํ™•์ธ
A.940 ๋น„์ •์ƒ ์‹œ์šด์ „ ์ข…๋ฃŒ ์‹œ์šด์ „ ๋„์ค‘ ์•Œ๋žŒ ๋ฐœ์ƒ์œผ๋กœ ์ค‘๋‹จ๋จ ์›์ธ ๋ถ„์„ ํ›„ ์‹œ์šด์ „ ์žฌ์‹œ๋„
A.950 ํŒŒ์ผ ํฌ๋งท ์˜ค๋ฅ˜ ํŒŒ๋ผ๋ฏธํ„ฐ ์ €์žฅ ๋˜๋Š” ๋ณต์› ์ค‘ ์˜ค๋ฅ˜ ๋‹ค๋ฅธ ํŒŒ๋ผ๋ฏธํ„ฐ ํŒŒ์ผ๋กœ ๋ณต๊ตฌ ์‹œ๋„

The following code lists representative error codes of the Sigma-5(with english)

Error Code Description Cause Solution
A.020 Overcurrent Excessive current through the motor (short circuit, abrupt stop, wiring issue) Check wiring, load conditions, insulation; avoid sudden stops
A.030 Overvoltage DC bus voltage exceeded allowable limit Check regenerative resistor, measure input voltage, slow down deceleration
A.040 Undervoltage DC bus voltage is too low Check power supply input, ensure stable power
A.050 Overheat Internal temperature exceeded allowable limit Inspect cooling fan, improve ventilation, reduce ambient temperature
A.070 Encoder Error Encoder connection failure or malfunction Check encoder cable and connector, replace encoder if faulty
A.080 Regenerative Overload Failure to absorb regenerative energy Check or upgrade regenerative resistor, inspect for damage
A.090 Parameter Error Incorrect or corrupted parameters Reset or reload correct parameters
A.100 Overspeed Commanded speed exceeds limit Adjust speed limit settings, verify command input
A.120 Position Error Overflow Difference between commanded and actual position too large Adjust servo gains, inspect mechanical system, review parameters
A.130 Overload Sustained overload operation Reduce load, adjust duty cycle
A.140 Communication Error Failed communication with host (MECHATROLINK, Modbus, etc.) Check communication wiring and parameters
A.150 Insulation Error Degradation of motor or cable insulation Perform insulation test, replace motor or cable if needed
A.170 Encoder Battery Low Absolute encoder battery voltage low Replace battery (recommended with power on)
A.300 Safety Circuit Error FLS, RLS, or safety circuit abnormal Check safety terminals and interlock wiring
A.510 EEPROM Error Internal data save error Initialize or replace drive
A.520 RAM Error RAM data fault Drive replacement required
A.530 Flash Memory Error Program memory corruption Reinstall firmware or replace drive
A.710 Boot Mode Error Abnormality during drive startup Restart, attempt firmware recovery
A.910 Safety Parameter Error FSoE or STO parameter misconfiguration Review and correct safety parameters
A.930 Zero-Point Setting Error Failure in home position setup Retry zero setting, check configuration
A.940 Abnormal Tuning Stop Tuning aborted due to error Investigate cause, retry tuning
A.950 File Format Error Error during parameter save/load Try a different parameter file or restore defaults

๐Ÿ“Œ Notes

  • Model Variations: Some error codes may differ slightly depending on the Sigma-5 model (e.g., SGDV, SGDH).
  • Immediate Stop Recommended: Most errors trigger system protectionโ€”stop operation and diagnose immediately.
  • Monitor Temperature & Voltage: Repetitive overheating or overvoltage can damage internal circuits.
  • For Communication Errors: Confirm proper node settings, cable lengths, and master-slave configuration.
  • STO/FSoE Safety: The motor will not operate if the STO terminals are not properly configured or closed.

If you need an official Sigma-5 manual (PDF, EN/KO) or model-specific documentation, let me know the exact model number (e.g., SGDV-120D01A) and Iโ€™ll provide it accordingly.

Also available upon request:

  • Safety wiring diagram examples
  • Regenerative resistor sizing method
  • Communication setup guide (MECHATROLINK, Modbus, EtherCAT)

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