Re: Volvo 24v alternator exciter


There is a relay that uses the start engine 12v circuit to close the other side of the relay which is supplied with 24 volts. That is how the "excite circuit" works for the 24-volt alternator on all model Amels that I am familiar with that have 24-volt banks and alternators. Here are a few photos:
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On Sat, Sep 26, 2020 at 1:57 PM Mike Ondra via <> wrote:
24 V alternator recently requires higher RPM before producing voltage. Any suggestions about where to start troubleshooting? Exciter circuitry? Thanks!
Mike Ondra
Aletes SM240

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