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Topic starter
20/01/2018 9:17 am
Have a Dover composite that’s been shutting down frequently.
When I get there my FT timer is on With the generator off.
If I manually pick up the MGX relay car will return to service. My problem is that according to the print, terminal “SY” feeds the MGX relay which then has a self latching contact.
I attached the circuit in question. I cannot find where SY is getting power from.
Does anyone know what is SY in this circuit and where does it get its voltage from?
When I get there my FT timer is on With the generator off.
If I manually pick up the MGX relay car will return to service. My problem is that according to the print, terminal “SY” feeds the MGX relay which then has a self latching contact.
I attached the circuit in question. I cannot find where SY is getting power from.
Does anyone know what is SY in this circuit and where does it get its voltage from?
20/01/2018 10:21 am
I think that goes to the common panel. Look for the PFT timer coils, they’re probably in the other column of that page. You should see a circuit showing SY getting power through a N/O SA contact from MG1 terminal which is on page 1, basically connected to SQS. It seems to be like a non-interference circuit to keep generators from starting at the same time.
It’s all on page 12 of this print
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Topic starter
21/01/2018 1:57 am
Thanks for the reply, after looking over your prints I realized I was missing a page from mine. I will check it out on Monday. Thanks again
Topic starter
24/01/2018 8:31 am
Just closing out thread. Ended up being a bad N/C contact on SB. Thanks Indirtwetrust for pointing me in the right direction.