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| 3/30/2019 5:56 AM | |
Joined: 9/9/2015 Last visit: 10/28/2024 Posts: 728 Rating:
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Dear Support, We have four modules are currently having ADC/DAC Fault. The part number is 6ES7 138-7FA00-0AB0. Those modules are usually working before a Full hardware download and Full Chart download. Then, never after. These are the trial that we have tried. 1. removed the field cables. The ADC/DAC faults remained. 2. removed the power by removing the module from the slot and insert it again. The module went to green colour for a few seconds, then went red colour. The ADC/DAC faults remained. 3. replace the modules in that particular slot with a new one, configured the Dip switch correctly based on the previous configuration. The module went to green colour for a few seconds, then went red colour. The ADC/DAC faults remained. 4. Full hardware download and full chart download on the previous projects that were backup before full download of new projects. The ADC/DAC faults remained. 5. Off the power for the IM152 and turn on again. The result is the same. 6. Switch the active Master for IM152 and check; the result is the same. I have no solutions right now. This is quite critical as we are waiting for these safety instruments to continue the testing. I hope I can listen to you soon. Thank you so much.
Attachment20190330_ADCDACFaults.zip (290 Downloads) |
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| 3/30/2019 9:35 AM | |
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Joined: 9/9/2015 Last visit: 10/28/2024 Posts: 728 Rating:
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We have resolved our IM152 ADC/DAC issue. There is a procedure to resolve the issue. 1. Initial condition: The IM152 and the modules are in powered. 2. Then, REMOVE all the field cables in the ADC/DAC faulty modules. 3. Then，power off the module by dismantle the modules. 4. Then, insert the modules again. The issue was resolved. 5. Then, measure the field cable to ensure no power supply from the field cables if 2DMU is configured. If the transducer/sensor has its own power supply, it may burn ADC input resistor or sensor. 6. Insert the field cables one channel by one channel to see the fault remained. Interference will cause this issue as well. See attached video, testing with walkie talkie. AttachmentWalkieTalkie.wmv (336 Downloads) |
Last edited by: JazTai at: 11/09/2019 10:21:29Please give me 5 stars Rating if my post is helpful for you. :) |
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