Sun Sep 24, 2017 5:28 pm
#1560715
I have changed out my very very old B and C alternator
for a new model (200G) due to bearing failure.
The new one is up rated, to 12 amp from 8 I believe, and it came with a new regulator.
The replacement now comes with a crowbar over-voltage device and a warning lamp, all wired in and tested as far as possible.
So far so good.
But, now I get the ( Grand Rapids )EMS warning light coming on at anything under 1500rpm and sometimes at any revs, and the 'voltage' reading flashing to indicate an out of parameter issue.
It reads that the voltage coming into the EMS is 12.5 volts, which it doesn't like. When it raises to 12.6V or so it 'satisfies' the EMS and the light flashes regularly or goes out by itself.
Putting a load on by turning on the landing light has no effect, which suprises me as it's a big old fog lamp.
I'm told 13.5V. Is the proper charging voltage but there is no adjustment I know of.
The battery has started the engine ok on the 4 flights ( duration 4.5hrs) so far and doesn't seem to be going flat.
Any ideas?
I might be able to go into the settings and lower the trigger point for the EMS under-voltage warning light but is the 12.5 volts going to damage my battery?
Local opinions vary widely, any help would be appreciated.
for a new model (200G) due to bearing failure.
The new one is up rated, to 12 amp from 8 I believe, and it came with a new regulator.
The replacement now comes with a crowbar over-voltage device and a warning lamp, all wired in and tested as far as possible.
So far so good.
But, now I get the ( Grand Rapids )EMS warning light coming on at anything under 1500rpm and sometimes at any revs, and the 'voltage' reading flashing to indicate an out of parameter issue.
It reads that the voltage coming into the EMS is 12.5 volts, which it doesn't like. When it raises to 12.6V or so it 'satisfies' the EMS and the light flashes regularly or goes out by itself.
Putting a load on by turning on the landing light has no effect, which suprises me as it's a big old fog lamp.
I'm told 13.5V. Is the proper charging voltage but there is no adjustment I know of.
The battery has started the engine ok on the 4 flights ( duration 4.5hrs) so far and doesn't seem to be going flat.
Any ideas?
I might be able to go into the settings and lower the trigger point for the EMS under-voltage warning light but is the 12.5 volts going to damage my battery?
Local opinions vary widely, any help would be appreciated.