Compatibility check

The Altion is designed for use with externally regulated alternators with a nominal voltage range of 12-48 volts, with a full operating range of 8-60 volts.

Verification Steps

To ensure compatibility and safe operation, check the following:

Nominal voltage: Verify if your alternator's nominal voltage falls within the range of 12-48 volts.
External voltage regulator compatibility: Ensure your alternator is designed for external regulation or has a suitable conversion kit installed.
ECU control: This voltage regulator is designed for use with alternators that are not controlled by the engine's ECU (Electronic Control Unit). Most marine main alternators fit this description. In RVs, however, main alternators are often ECU-controlled; this regulator is typically used with secondary alternators in such setups.
Avalanche Diodes: Avalanche diodes are highly recommended for all setups to protect the regulator from voltage spikes. Note these are often unavailable in 48 volt alternators.

For 48v setups, we highly recommend a CANbus connected setup through NMEA 2000 or RV-C for optimal charge control and safety.

Alternator Protection Modules: For additional safeguarding against load dump events, consider using alternator protection modules.
Ground Connection (Multiple Alternators): If you're using two alternators, it's critical that both alternator negatives are connected to the same ground. This prevents ground loops and potential damage to the regulator.

If you are unsure about any aspect of your alternator's compatibility, consult a qualified mechanic or the alternator manufacturer.