mrdegold
Lifetime Supporting Member
Hello again
As always thanks for being there. In my plant I am the only PLC/Control person and I use this forum quite a bit just so I can find someone speaking the same language.
My question for today has to do with Allen Bradley PLC’s batteries.
1) SLC 5/05 Processors (1747-L552 to be exact)
I was told that these batteries have no type of recharge while installed in the SLC. (True or False is the question here?) As well as that the SLC will / should hold it’s programming for the few minutes that the processor will be without power while a new battery is installed (same here is this true or false?)
2) PLC 5/40E (1785-L40E )
With this Processor I was told that if I remove the battery with no power to the processor that all the programming would be lost. (Again my question is true or false?)
I was also told that the PLC5 is designed to have the battery replaced while the processor is powered up i.e. 120-volt power applied to the rack (as seems to the theme of the day. True or false?)
We are scheduled to have a contractor come in on Wednesday for preventive maintenance to our high voltage system. I was planning to also replace batteries during this down time as well.
I will of course have as always a backed up copy of all programs (Ladders) just in case something goes wrong because here it seems something always goes wrong.
As always thanks for the help and thanks for just being members of this great forum
Michael
As always thanks for being there. In my plant I am the only PLC/Control person and I use this forum quite a bit just so I can find someone speaking the same language.
My question for today has to do with Allen Bradley PLC’s batteries.
1) SLC 5/05 Processors (1747-L552 to be exact)
I was told that these batteries have no type of recharge while installed in the SLC. (True or False is the question here?) As well as that the SLC will / should hold it’s programming for the few minutes that the processor will be without power while a new battery is installed (same here is this true or false?)
2) PLC 5/40E (1785-L40E )
With this Processor I was told that if I remove the battery with no power to the processor that all the programming would be lost. (Again my question is true or false?)
I was also told that the PLC5 is designed to have the battery replaced while the processor is powered up i.e. 120-volt power applied to the rack (as seems to the theme of the day. True or false?)
We are scheduled to have a contractor come in on Wednesday for preventive maintenance to our high voltage system. I was planning to also replace batteries during this down time as well.
I will of course have as always a backed up copy of all programs (Ladders) just in case something goes wrong because here it seems something always goes wrong.
As always thanks for the help and thanks for just being members of this great forum
Michael