9/1/2016 6:46 PM | |
Posts: 38 Rating: (2) |
What version of NCU do you have? Here's the procedure for Solutionline NCU's: https://support.industry.siemens.com/cs/us/en/view/99922219/51730666891 Pay attention to the Note regarding leaving the NCU on during replacement:
The procedure for Powerline is in Section 8.1 on page 91 of this manual: https://support.industry.siemens.com/cs/us/en/view/28516629 You must power off the NCU to replace the battery for a Powerline NCU. |
Last edited by: SnSllvn at: 9/1/2016 7:03:48 PMLast edited by: SnSllvn at: 9/2/2016 7:26:52 PM |
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This contribution was helpful to1 thankful Users |
9/2/2016 1:51 AM | |
Joined: 10/17/2007 Last visit: 5/16/2024 Posts: 3985 Rating: (342) |
shut off POWER OF NCU, change battery--100% sure for 840D power line. you said already check Siemens manual? in the manual "....there is a capacitor on NCU board to hold and back up the data memory.. " Siemens suggest doing change in 15 min's--as I know less than 4 hours will be OK. However, prepare battery--check Siemens book there is order#, and if you like you can make one more time NCK/PLC data back up to HMI. I add picture for that manual
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Last edited by: nulizhang at: 9/2/2016 2:06:50 AMadd pic If you like my comments please |
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