Non Feedback Proportional Electric Control (Nfpe) Options A8 (12 V) / B8 (24 V) - Sauer Danfoss H1 Technical Information

Non Feedback
Proportional Electric
Control (NFPE)
Options A8 (12 V) /
B8 (24 V)
Pump displacement vs. input signal
NFPE control
Signal Current
mA(DC)
c
16
H1 Axial Piston Pump, Size 045/053, Single
Technical Information
General Technical Specifications
The Non Feedback Proportional Electric
(NFPE) control is an electrical automotive
control in which an electrical input
signal activates one of two proportional
solenoids that port charge pressure to
either side of the pump servo cylinder.
The NFPE control has no mechanical
feedback mechanism.
The pump displacement is proportional
to the solenoid signal current, but it also
depends upon pump input speed and
system pressure. This characteristic also
provides a power limiting function by
reducing the pump swashplate angle
as system pressure increases. A typical
response characteristic is shown in the
accompanying graph.
Under some circumstances, such as
contamination, the control spool could
stick and cause the pump to stay at some
displacement.
A serviceable 125 μm screen is located in
the supply line immediately before the
control porting spool.
100 %
a
b
"0"
a
100 %
Description
Mating connector
Wedge lock
Socket contact (16 and 18 AWG)
Sauer-Danfoss mating connector kit
11063344 • Rev EA • Dec 2012
NFPE Schematic
C1
F00B
Control signal requirements
Control current
Size
(cm )
3
45
53
* Factory test current, for vehicle movement or ap-
b c
plication actuation expect higher or lower value.
Connector
P003 187E
Quantity Ordering number
1 Deutsch® DT06-2S
1 Deutsch® W2S
2 Deutsch® 0462-201-16141
1 K29657
P003 192
M14
F00A
a* b c Pin
Voltage
mA mA mA connections
12 V 710 1135 1380
24 V 360 585 675
any order
12 V 715 1140 1495
24 V 365 570 720
1 2
P003 480
C2
T P
P003 188
T301 002E
T000 134E