Forward-Neutral-Reverse (FNR) three-position electric control
The Forward-Neutral-Reverse (FNR) is a three-position control. It uses a 12 or 24 Vdc electrically operated
spool valve to port pressure to either side of the servo piston. Energizing one of the two solenoids will
cause the pump to go to its maximum displacement in the corresponding direction. The FNR control
does not use mechanical feedback.
All functions of the three position (FNR) electric control are preset at the factory.
FNR control on series 42 pump (28/32cc)
Service Manual
Series 42 Axial Piston Closed Circuit Pumps
Control Options
20 520L0638 • Rev 0300 • July 2015
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