AC 800M HARDWARE ERROR - RESET Problems on PM861
Problem:Solution
- The error is corrected in PR:D and higher.
Workaround
For # 1. Repeat the pushing and reload the application program.
For # 2 and # 3.Remove the 24V DC socket and the battery for a while and then reconnect. Reload the application program.
Remark
All PM861 in stock with PR:C have been upgraded and retested. Deliveries from Feeder Factory as of W243 does not contain the above described error.
[ref 3BSE029566D0005 VASMASOITA0842 ]
- AC 800M HARDWARE ERROR - RESET Problems on PM861
A hardware error has been found on a limited number of the AC 800M controller CPU, PM861, which might result in any of the following situations:
# 1. In single configuration: As a result of an INIT push button interaction, e.g. in order to perform a Cold Restart, the PM861 might "Stall" and show a lit F-led with a 5 second cyclic short turn-off. The CPU will respond to further pushing of the INIT button but the result will be a Controller Reset, i. e. the application program is lost and needs to be reloaded.
# 2. In single configuration: As a result of an INIT push button interaction, e.g. in order to perform a Cold Restart, the PM861 might "Stall" and show a permanently lit F-LED. The CPU is not responding to any INIT or restart interactions.
NOTE to # 1 and # 2: Pushing the INIT button on the Primary CPU in a redundant configuration will cause a switch-over to the Backup and might, in case the actual HW is disposed for this error, end up with an "ex-primary" CPU in states according to 1 or 2 but the new Primary("ex-backup") CPU running normally.
# 3. In a redundant configuration: In case of a SW-crash ( i.e. primary crashes and backup intentionally halted), the intentionally halted "ex-Backup" CPU might be trapped in a state where it is no longer responding to any INIT or restart interactions. The F-LED is permanently lit.
Products concerned
AC 800M
Items concerned
Controller CPU PM861K01 and K02, 3BSE018105R1 and 3BSE018107R1, PR:A, PR:B and PR:C
- Article imported from the previous version of KnowledgeBank
Asked 12 years ago
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