MAKING MODERN LIVING POSSIBLE
Electrical Installation
S42 Pump
Non-Feedback Proportional
Electric (NFPE) Control
powersolutions.danfoss.com
Electrical Installation S42 NFPE Control
Revision history Table of revisions
Date Changed Rev
September 2015 Converted to Danfoss layout BA
May 2010 First edition AA
2 L1022132 • Rev BA • September 2015
Electrical Installation S42 NFPE Control
Contents
Literature references
S42 NFPE Control literature references.................................................................................................................................... 4
Latest version of technical literature.........................................................................................................................................4
Product overview
Product image................................................................................................................................................................................... 5
Nomenclature ...................................................................................................................................................................................5
Theory of operation.........................................................................................................................................................................6
Hydraulic schematics...................................................................................................................................................................... 6
Electrical specifications.................................................................................................................................................................. 7
Electrical installation
Pinout....................................................................................................................................................................................................8
Pin compatibility...............................................................................................................................................................................8
Input/output matrix........................................................................................................................................................................ 9
Mating connector.............................................................................................................................................................................9
L1022132 • Rev BA • September 2015 3
Electrical Installation S42 NFPE Control
Literature references
S42 NFPE Control literature references
Literature title Description Literature number
S42 Axial Piston Pumps Technical Information Complete product electrical
S42 NFPE Controls Function Blocks User Manual Compliant function block
Latest version of technical literature
Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/
and mechanical
11022637
specifications
L1020210
set-up information
4 L1022132 • Rev BA • September 2015
S42
Rotation
Y C D E F Q R G S T U H J K L M N P
Electrical Installation
Product overview
Product image
Nomenclature
S42 NFPE Control
S42 NFPE Control
Code D options
Option Description
G1A1 Bolt-on, 12V, 650 to1500 mA, 5 to 20 bar supply pressure, AMP Jr connector
G2A1 Integral valves in housing, 12V, 650 to 1500, 5 to 20 bar supply pressure, AMP Jr connector
G2A2 Integral valves in housing, 12V, 650 to 1500, 5 to 20 bar supply pressure, Packard Weather-Pack
connector
Only certain control options for the S42 pump utilize the Non-Feedback Proportional Electric (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 nametag. For nomenclature details, refer to S42 Axial
Piston Pumps Technical Information, 11022637.
L1022132 • Rev BA • September 2015 5
D
i
s
p
l
a
c
e
m
e
n
t
100%
100%
1000
650
650
1000
Signal current mA (dc
avg
)
∆p
system=345b
ar
∆p
system=345bar
∆p
system=35bar
∆p
system=35bar
W
M5
M4
B
A
Electrical Installation
Product overview
Theory of operation
S42 NFPE Control
The Non-Feedback Proportional Electric (NFPE) control is an electric control in which an electric input
signal activates one of two solenoids that port charge pressure to either side of the servo piston. Series 42
pumps equipped with NFPE control have a special servo cylinder capable of providing proportional
control with an electric input.
Swashplate position is proportional to the input signal current, but displacement is also dependent on
pump speed and system pressure. This characteristic of non-feedback controls provides a natural power
limiting function by reducing the pump swashplate angle as system pressure increases. The
accompanying graph shows typical operating characteristics.
NFPE pump displacement to input signal
Hydraulic schematics
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.
NFPE hydraulic schematic
6 L1022132 • Rev BA • September 2015
D
i
s
p
l
a
c
e
m
e
n
t
100%
100%
1000
650
650
1000
Signal current mA (dc
avg
)
∆p
system=345b
ar
∆p
system=345bar
∆p
system=35bar
∆p
system=35bar
Electrical Installation S42 NFPE Control
Product overview
Electrical specifications
NFPE pump displacement to input signal
S42 NFPE electrical specifications
Voltage
Threshold current
End current
Maximum current
Rated power
Coil resistance at 20ºC [70ºF]
Coil resistance at 80ºC [176ºF]
PWM frequency range
Recommended PWM frequency
*
Verify the PWM frequency is set correctly in the PLUS+1® controller. The default is set at 4000 Hz which will
significantly reduce NFPE performance.
12 V
650 mA
1500 mA
1500 mA
27 W
5.30 Ω
6.53 Ω
100 to 200 Hz
*
200 Hz
L1022132 • Rev BA • September 2015 7
2 1
A
B
W
Electrical Installation
Electrical installation
Pinout
S42 NFPE Control
AMP Junior Power Timer connector pin location
Pinout
Pin Description
1, A PWM signal
2, B Ground
Packard Weather Pack connector pin location
Alternative pinout
Pin Description
1, A Ground
2, B PWM signal
Pin compatibility
PLUS+1® module pin type
Pin Function
1, 2, A, B PWMOUT/DOUT/PVG Power supply
1, 2, A, B PWMOUT/DOUT/PVGOUT
1, 2, A, B 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.
8 L1022132 • Rev BA • September 2015
B
A
B
A
Electrical Installation S42 NFPE Control
Electrical installation
Input/output matrix
28cc NFPE Control; 41cc NFPE Control
Pump output flow direction versus control signal
Shaft rotation
Coil energized
Port A flow
Port B flow
Servo port pressurized
*
For coil location, refer to installation drawings in the S42 Axial Piston Pumps Technical Information, 11022637
*
CW CCW
A B A B
In Out Out In
Out In In Out
M5 M4 M5 M4
Mating connector
AMP Junior Power Timer mating connector parts list
Description Quantity Ordering number
Connector 1 282189-1
Female terminals 2 929940-1
Mating connector kit 1 Danfoss K19815
Packard Weather-Pack connector parts list
Description Quantity Ordering number
Connector 1 12089188-B
Female terminals 2 12124580-L (14-16 AWG), 12089188-B (18-20 AWG)
Cable seal 2 12010293 (light gray seal)
Mating connector kit 1 Danfoss K03383
L1022132 • Rev BA • September 2015 9
Electrical Installation S42 NFPE Control
10 L1022132 • Rev BA • September 2015
Electrical Installation S42 NFPE Control
L1022132 • Rev BA • September 2015 11
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