AL.083 Servo drive excessive current – Delta servo troubleshooting

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Name Description ALM WRN SRV ON Clear


Servo drive excessive current

When the output current from servo drive exceeds the setting level, AL083 will be triggered to protect IGBT. This could avoid IGBT to be burned out because of the excessive current.   No DI.ARST

Causes Checking Method Actions
UVW cable is shortcircuited. Check the configuration of motor power cable and connector cable. See if the metal wire is exposed or AWG is worn and causes short
circuit of UVW cable.
Replace by new UVW cable and avoid the metal conductor being exposed so as to eliminate the short circuit.
Wrong motor wiring
  1. If applying non-standard power cable recommended by Delta, please check if the wiring sequence of UVW cable is correct.
  2. Check if there is any problem of lack phase when connecting UVW from servo to motor (unconnected or wrong connection).
Please refer to the description of wiring in Chapter 3 and conduct the wiring again.
Analog signal (GND) from servo drive is interfered. Check if the GND of analog signal is misconnected to another ground signal. Please refer to Chapter 3 and conduct the wiring again. GND of analog signal cannot be grounded with other signals

(The above information is referenced from Delta Electronics IMSBU)

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Other reasons Checking Method Actions

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