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[?]: CPU 414-2 After power supply ''off'' is lost project

Posted: Fri Jan 13, 2017 2:04 am
by Vital864
After power supply ''off'' is lost project.
The battery is new.
What could it be?

Re: [?]: CPU 414-2 After power supply ''off'' is lost projec

Posted: Fri Jan 13, 2017 5:39 am
by CoMod
CPU old ?
Firmware version ?
https://support.industry.siemens.com/cs ... 0&lc=en-WW

Use memory card
https://support.industry.siemens.com/cs ... s7-400-cpu

use external backup power
https://support.industry.siemens.com/cs ... s7-400-cpu
On the front side of the S7-400 CPUs, you have the possibility of supplying a DC voltage of 5V to 15V via the "EXT.-BATT." socket. This provides a backup supply for all the slots in the rack. This external power supply is not monitored by the CPU.

Note
More information on external backup power supplies is available in the device manual "S7-400 CPU Data" in Entry ID: 23904550.

Re: [?]: CPU 414-2 After power supply ''off'' is lost projec

Posted: Sun Feb 12, 2017 12:50 pm
by Vital864
1.Changed the firmware to the new one.
2. Memory card new. Have used on other CPU. There is no problem.
3. Connect an external power supply for 10 volts.

The problem remained. Where can you find a schematic diagram for the Board?

Re: [?]: CPU 414-2 After power supply ''off'' is lost projec

Posted: Sun Feb 12, 2017 3:15 pm
by CoMod
Vital864 wrote:The problem remained. Where can you find a schematic diagram for the Board?
no schemes :(
only photo http://s7detali.narod.ru/S7_417/S7_412.html

Siemens does not repair them - changes to new board