MAKING MODERN LIVING POSSIBLE
Electrical Installation
Series 90 Pump
Non Feedback Proportional
Electric (NFPE)
powersolutions.danfoss.com
Electrical Installation S90 NFPE
Revision history Table of revisions
Date Changed Rev
August 2015 Converted to Danfoss layout BA
Apr 2007 AA
2 11023289 • Rev BA • August 2015
Electrical Installation S90 NFPE
Contents
Literature references
S90 Pump NFPE literature references....................................................................................................................................... 4
Latest version of technical literature.........................................................................................................................................4
Product overview
Product image................................................................................................................................................................................... 5
Nomenclature....................................................................................................................................................................................5
Theory of operation.........................................................................................................................................................................6
Signal current versus displacement..................................................................................................................................... 6
Hydrostatic drive line power...................................................................................................................................................6
Hydraulic schematics...................................................................................................................................................................... 7
Electrical specifications.................................................................................................................................................................. 7
Electrical installation
Pinout....................................................................................................................................................................................................8
AMP Junior Power Timer connector.....................................................................................................................................8
Pin compatibility...............................................................................................................................................................................8
S90 NFPE input/output matrix.....................................................................................................................................................8
Mating connector.............................................................................................................................................................................9
AMP connector parts list.......................................................................................................................................................... 9
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Electrical Installation S90 NFPE
Literature references
S90 Pump NFPE literature references
Literature title Description Literature number
S90 Axial Pumps Technical Information Complete product electrical
PLUS+1® Compliant S90 NFPE Control Function Block User
Manual
Latest version of technical literature
Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/
and mechanical
specifications
Compliant function block
set-up information
520L0603
11022913
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A R C M P J G N F L H T W Y Z K
Electrical Installation
Product overview
Product image
Nomenclature
S90 NFPE
S90 Pump NFPE
M module - NFPE control options
Option Description
FA Non Feedback Proportional Electric Control, 12 Vdc, 25 bar
FB Non Feedback Proportional Electric Control, 24 Vdc, 25 bar
FC Non Feedback Proportional Electric Control, 12 Vdc, 32 bar
FD Non Feedback Proportional Electric Control, 24 Vdc, 32 bar
FG Non Feedback Proportional Electric Control, 12 Vdc, 32 bar
FH Non Feedback Proportional Electric Control, 24 Vdc, 32 bar
FK Non Feedback Proportional Electric Control, 12 Vdc, 25 bar
FL Non Feedback Proportional Electric Control, 24 Vdc, 25 bar
FM Non Feedback Proportional Electric Control, 12 Vdc, 32 bar
FN Non Feedback Proportional Electric Control, 24 Vdc, 32 bar
Only certain control options for the Series 90 pump utilize the Non Feedback Proportional Control (NFPE).
Please refer to the pump's nomenclature to determine if the pump is equipped with the proper option.
The nomenclature can be found on the pump's name tag.
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"0"
Signal Current
Displacemen
t
100 %
100 %
W
Electrical Installation
Product overview
Theory of operation
S90 NFPE
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.
Signal current versus displacement
Hydrostatic drive line power
Warning
Unintended vehicle or machine movement hazard. The loss of hydrostatic drive line power, in any mode
of operation (forward, neutral, or reverse) may cause the system to lose hydrostatic braking capacity. You
must provide a braking system, redundant to the hydrostatic transmission, sufficient to stop and hold the
vehicle or machine in the event of hydrostatic drive power loss.
6 11023289 • Rev BA • August 2015
B
A
M5
M4
M3
M1
M2
L1
S
L2
M6
P003 174
Electrical Installation S90 NFPE
Product overview
Hydraulic schematics
Non feedback proportional electric (NFPE)
Electrical specifications
S90 NFPE electrical specifications
Voltage
Start current
End current
Maximum current
Coil resistance at 20 °C [70 °F]
Recommended PWM frequency**
Minimum PWM frequency
*
PWM signal required for optimum control performance.Verify the PWM frequency is set correctly in the PLUS+1
controller. The default is set at 4000 Hz which will significantly reduce EDC performance.
12V 24V
440 mA 220 mA
1290 mA 645 mA
1500 mA 750 mA
4.98 Ω 20.60 Ω
200 Hz
80 Hz
®
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2 1
W
Electrical Installation S90 NFPE
Electrical installation
Pinout
AMP Junior Power Timer connector
Pin location
Pinout
Pin Function
1 PWM signal
2 Ground
Pinout (alternative)
Pin Function
1 Ground
2 PWM signal
Pin compatibility
S90 NFPE input/output matrix
PLUS+1® module pin type
Pin Function
1, 2 PWMOUT/DOUT/PVG Power supply
1, 2 PWMOUT/DOUT/PVGOUT
1, 2 Power ground
*
Use output pins with configurable PWM frequency.
*
*
Warning
Unintended vehicle or machine movement hazard. Verify the wiring harness to ensure the correct PLUS
+1® pin is properly connected to each control pin.
Shaft rotation
Active solenoid
Port A flow
Port B flow
Servo cylinder
Clockwise Counterclockwise
A B A B
Out In In Out
In Out Out In
M5 M4 M5 M4
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Electrical Installation S90 NFPE
Electrical installation
Mating connector
AMP connector parts list
Description Quantity Ordering number
Two pin connector 1 Tyco Electronics 282189-1
Contacts 2 Tyco Electronics 929940-1
Seal plugs 2 Tyco Electronics 828904-1
Mating connector kit 1 Danfoss K19815
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Electrical Installation S90 NFPE
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Electrical Installation S90 NFPE
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