8/31/2012 2:33 PM | |
Posts: 739 Rating: (55)
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Hello, A0503 = alarm, undervoltage The line supply voltage of the drive inverter is switched-out and the DP module (PROFIBUS module) is supplied through an external 24V. In this particular case, alarm message A0503 is output. This alarm message can be ignored. Normally, the electronics power supply is realized from the DC link of the drive inverter. The power supply is also sensed/measured via the DC link. When the drive inverter is powered-down, the electronics is supplied from the external 24V and the DC link is in a no-voltage condition. This is why A0503 is output.http://support.automation.siemens.com/WW/view/en/8822493 |
9/18/2012 7:35 PM | |
Posts: 2 Rating: (0) |
i got it fixed |
9/6/2018 8:31 AM | |
Joined: 1/12/2010 Last visit: 8/5/2024 Posts: 5 Rating: (0) |
Try to change the card behind the rectifier because it responsible of sensing of DC voltage |