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After replacing with a new plc a fault indication coming

9/30/2012 7:34 PM	Rate (0)
Muqtadar Posts: 7 Rating: (0)	Dear all, we r facing a problem in our plant,we have s7-300 plc(CPU 315-2DP)and simovert master drive ,yesterday plc got damage,after that we replaced it with new one and download the program now we r face a problem that in the HMI(simatic panel sreen touch)it showing fault message'LOW VOLTAGE' as 127 V but from the rectifier unit it isgiving the supply of 420v to all the drive i.e to motors and the HMI through which we control the speed to motor. we download the parameter in rectifier unit and also in drive but also it is showing the same fault so can anybody help me please....
Muqtadar Posts: 7 Rating: (0)
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10/1/2012 6:53 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 10/16/2025 Posts: 10239 Rating: (1183)	Hello, Did you check from where is comming that 'LOW VOLTAGE' status in software? Best regards, Hristo Mihalev

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10/1/2012 12:25 PM	Rate (0)
Muqtadar Posts: 7 Rating: (0)	Dear all Today i check in the software in simatic manager 5.3 it showing a error in the hardware module at CPU when i click on module information it show message that LED fault what does it means can u help me....
Muqtadar Posts: 7 Rating: (0)
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10/1/2012 12:44 PM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, Did you replace the CPU with same type? Look at the Tab Diagnostic Buffer (in module information. With Save as you can output the information you get as txt-file and post it here. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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10/1/2012 3:49 PM	Rate (0)
Muqtadar Posts: 7 Rating: (0)	Dear all, the problem is solved
Muqtadar Posts: 7 Rating: (0)
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10/1/2012 5:13 PM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, Can you please share what the problem caused and how it was solved. Could be usefull for others with same issue. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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This contribution was helpful to 1 thankful Users fritz

10/1/2012 7:49 PM	Rate (0)
Muqtadar Posts: 7 Rating: (0)	Dear sir, Actually we have replaced the cpu was different before we was having the cpu -315 dp (6es..AG0) but after that we replaced it with new cpu -315 DP(6ES....AH0) so it was not configured in HWI ,so after that we download all the blocks in plc and download the parameter in the rectifier unit now it working Alhamdulillah.
Muqtadar Posts: 7 Rating: (0)
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This contribution was helpful to 3 thankful Users dchartier O_Moderator Marcjan

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