I always get AL003 when I power up the LXM28, following the installation manual.
Product Line: LXM28
AL003 alarm on power-up
Alarm ´AL003´ will allways occur if the ´Control Supply´ on L1 and L2 is connected but the ´Power Supply´ is not connected on R and S (T) when the drive has already booted up.
If you ensure that the the mains supply voltage is correct, you can either do an explicite "FaultReset" or an automatic reset.
The drive provides a parameter to make an automatic "FaultReset" after an "undervoltage error" ´AL003´ was detected.
It's parameter P2:66 (Bit 2 = TRUE). When you set P2:66 to 4, the ´AL003´ will be reset automatically after the "Power supply" is connected and the voltage level is correct.
The ´Undervoltage Monitoring - Threshold Value´ can be set with parameter P4:24.