Frequency Detection Module – 24 v
Frequency Detection Module: 24 V for all ranges from UC-P7 of STAMFORD Alternators.
The STAMFORD Frequency Detection Module (FDM) is used with a separately-excited alternator, deriving an alternator frequency (rotational speed) signal from the Permanent Magnet Generator (PMG).
The FDM operates a relay if the frequency falls below an adjustable preset under-frequency threshold. Changeover contacts can be used for engine control to disengage a starter motor, for example.
The FDM operates a relay if the frequency rises above an adjustable preset over-frequency threshold. Changeover contacts can be used for engine control to initiate an over-speed shutdown.
Key features include:
- Robust and reliable solid-state electronics
- Independently powered from the engine battery
- Simple connection to the
