S-D4012 Timer module The system includes: A magnetic pickup (MPU) for detecting the speed of the prime mover. Frequency-voltage converter for converting MPU frequencies to S-D4012 internal circuits. Speed reference for comparison with prime mover speed.
Idle and S-D4012 speed controls provide rated speed references. This speed reference is used by the operator via an external switch.) Speed adder/amplifier that outputs the steam required to maintain a reference speed proportional to the amount of fuel or at any given load.
Actuator valves for positioning fuel or steam mechanisms (injector rack or steam).
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