MAKING MODERN LIVING POSSIBLE
Electrical Installation
S42 Pump
Electrical Displacement Control
(EDC)
powersolutions.danfoss.com
Electrical Installation S42 EDC
Revision history Table of revisions
Date Changed Rev
September 2015 Converted to Danfoss layout CA
January 2013 Currents BA
May 2010 First edition AA
2 L1022027 • Rev CA • September 2015
Electrical Installation S42 EDC
Contents
Literature references
S42 EDC literature references.......................................................................................................................................................4
Latest version of technical literature.........................................................................................................................................4
Product overview
Product image................................................................................................................................................................................... 5
Nomenclature ...................................................................................................................................................................................5
Theory of operation.........................................................................................................................................................................6
Hydraulic schematics...................................................................................................................................................................... 7
Electrical specifications.................................................................................................................................................................. 7
Electrical installation
Pinout....................................................................................................................................................................................................8
Pin compatibility...............................................................................................................................................................................9
Input/output matrix........................................................................................................................................................................ 9
Mating connector.............................................................................................................................................................................9
L1022027 • Rev CA • September 2015 3
Electrical Installation S42 EDC
Literature references
S42 EDC literature references
Literature title Description Literature number
S42 Axial Piston Pumps Technical Information Complete product electrical
S42 EDC 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
L1020718
set-up information
4 L1022027 • Rev CA • 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 EDC
S42 EDC
Code D options
Option Description
E1A3 Electrical Displacement Control, 14-85 mA, Packard Weather-Pack connector, low gain spool
E1A4 Electrical Displacement Control, 14-85 mA, MS connector, low gain spool
E1A5 Electrical Displacement Control, 14-85 mA, Packard Weather-Pack connector, high gain spool
E1A6 Electrical Displacement Control, 14-85 mA, MS connector, high gain spool
E1A7 Electrical Displacement Control, 14-85 mA, DEUTSCH connector, high gain spool
Only certain control options for the S42 pump utilize the Electrical Displacement Control (EDC). 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.
L1022027 • Rev CA • September 2015 5
0
100 %
100 %
Displacement
Current mA
W
Electrical Installation
Product overview
Theory of operation
S42 EDC
The Electrical Displacement Control (EDC) uses an electrohydraulic Pressure Control Pilot (PCP) stage to
provide a differential pilot pressure. The PCP stage converts an electrical input signal to a hydraulic input
signal to operate a spring centered sensing piston. The sensing piston produces a mechanical input to
the servo control valve which ports hydraulic pressure to either side of the servo piston. The servo piston
operates the swashplate varying the pump’s displacement and flow direction.
The position of the swashplate is proportional to the electrical input signal. The control has mechanical
feedback that regulates the servo valve in relation to swashplate position to maintain displacement at
the commanded level regardless of changes in system pressure. Any swashplate position error is fed back
to the servo valve for instant correction.
The servo control valve has variable geometry porting to regulate swashplate response relative to input
command. The control performs small displacement change commands with maximum controllability
throughout the entire stroking range of the pump. It completes large displacement change commands
with rapid swashplate response. Optional servo supply and drain orifices are available for special
response needs.
EDC proportional actuation
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 L1022027 • Rev CA • September 2015
M5
M4
X1
X2
0
-b -a
ba
100 %
100 %
Displacement
Current mA
Electrical Installation S42 EDC
Product overview
Hydraulic schematics
EDC hydraulic schematic
Electrical specifications
Pump displacement versus control current
S42 EDC electrical specifications
Threshold current
End current
Maximum current
Rated power
A—B Coil Resistance at 24°C (75°F)
C—D Coil Resistance at 24°C (75°F)
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 EDC performance.
18 mA
105 mA
350 mA at 6 Vdc
18 W
20 Ω
16 Ω
200 Hz
L1022027 • Rev CA • September 2015 7
A
B
D
C
B
C
D
A
2
1
3
4
Electrical Installation S42 EDC
Electrical installation
Pinout
Pin location
Pinout
Pin Description
A PWM signal
B Ground
C Ground
D PWM signal
Pin location
Alternative pinout
Pin Description
A PWM signal
B Ground
C Ground
D PWM signal
Pin location
DEUTSCH 4-way connector pinout
Pin Description
1 PWM signal
2 Ground
3 Ground
4 PWM signal
8 L1022027 • Rev CA • September 2015
W
Electrical Installation S42 EDC
Electrical installation
Pin compatibility
PLUS+1® module pin type
Pin Function
1, 4, A, D PWMOUT/DOUT/PVG Power supply
1, 4, A, D PWMOUT/DOUT/PVGOUT
2, 3, B, C Power ground -
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.
Input/output matrix
Pump output flow direction versus control signal
Shaft rotation
Positive current to terminal
Port A flow
Port B flow
High pressure servo gauge port
High pressure EDC pilot gauge
CW CCW
A, C, 1, 3 B, D, 2, 4 A, C, 1, 3 B, D, 2, 4
Out In In Out
In Out Out In
M4 M5 M4 M5
X2 X1 X2 X1
Mating connector
MS connector parts list
Description Quantity Ordering number
MS connector 1 SG3108E-14S-2S-SR
Mating connector kit 1 Danfoss K08106
Packard Weather-Pack connector parts list
Description Quantity Ordering number
4 way black Weather-Pack tower sealed female
connector assembly
Female terminals (18 to 20 AWG) 4 15408312
Cable seals (2.03 to 2.85 mm cable diameter) 4 12015323
Mating connector kit 1 Danfoss K03384
1 12015797
DEUTSCH connector parts list
Description Quantity Ordering number
4 way gray connector assembly 1 DEUTSCH DT06-4S-E003
Female nickel-plated terminals (16 to 18 AWG) 4 DEUTSCH 0462-201-16141
Mating connector kit 1 Danfoss K23511
L1022027 • Rev CA • September 2015 9
Electrical Installation S42 EDC
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Electrical Installation S42 EDC
L1022027 • Rev CA • September 2015 11
Danfoss
Power Solutions GmbH & Co. OHG
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D-24539 Neumünster, Germany
Phone: +49 4321 871 0
Danfoss
Power Solutions ApS
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DK-6430 Nordborg, Denmark
Phone: +45 7488 2222
Danfoss
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Ames, IA 50010, USA
Phone: +1 515 239 6000
Danfoss
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(Shanghai) Co., Ltd.
Building #22, No. 1000 Jin Hai Rd
Jin Qiao, Pudong New District
Shanghai, China 201206
Phone: +86 21 3418 5200
Products we offer:
Comatrol
www.comatrol.com
Schwarzmüller-Inverter
www.schwarzmuellerinverter.com
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www.turollaocg.com
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www.hydro-gear.com
Daikin-Sauer-Danfoss
www.daikin-sauer-danfoss.com
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that excel in the harsh operating conditions of the mobile off-highway market. Building on
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