Forward-Neutral-Reverse Electric Control (Fnr) - Danfoss H1 Series Technical Information

Technical Information
H1P 115/130 Axial Piston Single Pumps
Control Options

Forward-Neutral-Reverse Electric Control (FNR)

24 | © Danfoss | May 2018
The 3-position FNR control options A9 (12 V) and B1 (24 V) uses an electric input signal to switch the
pump to a full stroke position. A serviceable 125 μm screen is located in the supply line immediately
before the control porting spool.
Forward-Neutral-Reverse electric control (FNR)
P003 193
Pump displacement vs. electrical signal
100 %
"0"
Voltage V
100 %
Under some circumstances, such as contamination, the control spool could stick and cause the pump to
stay at some displacement.
Control current
Voltage
Min. current to stroke pump
Pin connections
FNR hydraulic schematic
C1
F00B
DC
12 V
750 mA
M14
C2
F00A T
24 V
DC DC
380 mA
any order
BC00000198en-US0901
P
P003 189