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s7400 External Battery

8/29/2008 1:22 PM	Rate (0)
Deleted User Posts: 767 Rating: (69)	Hello to all. i can seeon some s7-400 Cpus that "EXT.-BATT 5...15V DC" it looks like a DC adapter socket. Does anybody knows which type of external battery or DC adapter can be used for this?
Deleted User Posts: 767 Rating: (69)
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8/29/2008 2:15 PM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 12/19/2025 Posts: 9085 Rating: (1202)	Hello sim-a-tech, Please have a look at this link: http://support.automation.siemens.com/WW/view/en/24525963 And chapter 2.1 of manual: http://support.automation.siemens.com/WW/view/en/23904550 Best regards, Wizard

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8/29/2008 2:17 PM	Rate (0)
Aret Posts: 2348 Rating: (265)	Form"Automation System S7-400 CPU Specifications" You can use one or two backup batteries – depending on the module type – in the power supply modules of the S7-400 ..... You can achieve the same backup power by connecting a voltage between 5 V and 15 V DC to the “EXT.-BATT.” socket of the CPU. Note You will require the external incoming supply at the “EXT.-BATT.” socket if you replace a power supply module and want to provide a backup supply for the user program stored in RAM and the data mentioned above while the module is being replaced. Well, i guess external power supply power should be same as PS module power or greater.
Aret Posts: 2348 Rating: (265)
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8/29/2008 2:31 PM	Rate (0)
Deleted User Posts: 767 Rating: (69)	thanks for kind replies. it will be helpful for me.
Deleted User Posts: 767 Rating: (69)
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