BETA SVU Alarms
Fanuc Beta Servo Unit Alarms and Error Codes.
Fanuc Beta Servo Unit Alarms. These alarm and error codes cover the A06B-6093 series. Please contact us if you need testing, a repair or an exchange part. For further information please visit our dedicated Fanuc Beta Servo Unit Page.
Servo Amplifier Unit Alarms If alarm condition related to the servo amplifier unit occurs, the alarm indicator on the amplifier front panel is lit. Check the description of alarm at servo tuning screen.
| Type | Description |
| Over voltage alarm (HV) | This alarm occurs if the DC voltage of the main circuit power supply is abnormally high |
| Low DC link voltage alarm (LVDC) | This alarm occurs if the DC voltage of the voltage main circuit power supply is abnormally low or the outer circuit breaker trips |
| Over regenerative discharge alarm ( DCOH) | This alarm occurs if:The average regenerative discharge energy is too high. |
| Overheat Alarm (OH) | This alarm occurs if the temperature of the amplifier is abnormally high |
| Fan Alarm (FAL) | The fan, built into the servo amplifier unit has stopped |
| Over current alarm (HC) | This alarm occurs if an abnormally over current flows in servo amplifier unit |
Alarm number in Series 0-C (Servo Alarms)
| Alarm No | Description |
| 309 Alarm2 | a pulse coder error alarm |
| 309 Alarm4 | Pulse coder communication error alarm |
| 400 Alarm1 bit7 | Overheat alarm (motor) |
| 414 Alarm1 bit5 | Overload alarm( OVC) |
| 414 Alarm1 bit3 | DC link over voltage alarm (LVDC) |
| 414 Alarm1 bit6 | Low DC link voltage (LVDC) |
| 414 Alarm1 bit2 | Over generative discharge alarm (DCOH) |
| 414 Alarm1 bit4 | Over current alarm (HC) |
| 416 Alarm1 bit1 | Feedback disconnected alarm |
| 417 | Invalid servo parameter setting alarm |
Alarm number in Series 16, 18, 20, 21 (Servo Alarms)
| Alarm No | Description |
| 350 Alarm3 | a pulse coder error alarm |
| 350 Alarm3 bit 3 | Rotation speed data error alarm |
| 351 Alarm4 | Pulse coder communication error alarm |
| 400 Alarm1 bit7 | Overheat alarm (motor) |
| 414 Alarm5 bit6 | Current conversion error alarm |
| 414 Alarm1 bit5 | Overload alarm( OVC) |
| 414 Alarm1 bit3 | DC link over voltage alarm (LVDC) |
| 414 Alarm1 bit6 | Low DC link voltage (LVDC) |
| 414 Alarm1 bit2 | Over generative discharge alarm (DCOH) |
| 414 Alarm1 bit4 | Over current alarm (HC) |
| 416 Alarm1 bit1 | Feedback disconnected alarm |
| 417 (normally FSSB) | Invalid servo parameter setting alarm |
Pulse Coder Alarms
| Alarm Code | Description of Alarm/Error |
| 360 | n axis: abnormal checksum (int) |
| 361 | n axis: abnormal phase data (int) |
| 362 | n axis: abnormal rev.data (int) |
| 363 | n axis: abnormal clock (int) |
| 364 | n axis: soft phase alarm (int) |
| 365 | n axis: broken LED (int) |
| 366 | n axis: pulse miss (int) |
| 367 | n axis: count miss (int) |
| 368 | n axis: serial data error (int) |
| 369 | n axis: data trans.error (int) |
| 380 | n axis: broken LED (ext) |
| 381 | n axis: abnormal phase (ext lin) |
| 382 | n axis: count miss (ext) |
| 383 | n axis: pulse miss (ext) |
| 384 | n axis: soft phase alarm (ext) |
| 385 | n axis: serial data error (ext) |
| 386 | n axis: data trans. error (ext) |
Servo Amplifier Alarms
| Alarm Code | Description of Alarm/Error |
| 430 | n axis: servo motor overheat |
| 431 | n axis: cnv. overload (OH) |
| 432 | n axis: cnv. lowvolt con./powfault (LV) |
| 433 | n axis: cnv. low volt DC link (DCLV) |
| 436 | n axis: softthermal (OVC) |
| 438 | n axis: inv. abnormal current (HC) |
| 439 | n axis: overvolt power (HV) |
| 440 | n axis: cnv.ex deceleration pow. (DCOH) |
| 441 | n axis: abnormal current offset |
| 443 | n axis: cnv. cooling fan failure (FAL) |
| 445 | n axis: soft disconnection alarm |
| 446 | n axis: hard disconnection alarm |
| 447 | n axis: hard disconnection (ext) |
| 448 | n axis: unmatched feedback alarm |
| 460 | n axis: FSSB disconnection |
| 461 | n axis: illegal amp interface |
| 462 | n axis: send CNC data failed |
| 463 | n axis: send slave data failed |
| 464 | n axis: write ID data failed |
| 465 | n axis: read ID data failed |
| 466 | n axis: motor/ amp combination |
| 467 | n axis: illegal setting of axis |
P/S Alarms
| Alarm Code | Description of Alarm/Error |
| 5134 | FSSB: open ready time out |
| 5135 | FSSB: error mode |
| 5136 | FSSB: number of amp is small |
| 5137 | FSSB: configuration error |
| 5138 | FSSB: axis setting not complete |
| 5197 | FSSB: open time out |
| 5198 | FSSB: ID data not read |