AL.083 Servo drive excessive current – Delta servo troubleshooting

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Name	Description	ALM	WRN	SRV ON	Clear Way
AL.083 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	If applying non-standard power cable recommended by Delta, please check if the wiring sequence of UVW cable is correct. 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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