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S42 P

Danfoss S42 P User guide

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  • What is the function of the Electrical Displacement Control (EDC) in the Danfoss S42 pump?
    How is the swashplate position controlled in the S42 EDC pump?
    What is the range of the control current for the S42 EDC pump?
    What is the maximum power consumption of the S42 EDC control?
    What is the recommended PWM frequency for the S42 EDC control?
MAKING MODERN LIVING POSSIBLE
Electrical Installation
S42 Pump
Electrical Displacement Control
(EDC)
powersolutions.danfoss.com
Revision history Table of revisions
Date Changed Rev
September 2015 Converted to Danfoss layout CA
January 2013 Currents BA
May 2010 First edition AA
Electrical Installation S42 EDC
2 L1022027 • Rev CA • September 2015
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
Electrical Installation S42 EDC
Contents
L1022027 • Rev CA • September 2015 3
S42 EDC literature references
Literature title Description Literature number
S42 Axial Piston Pumps Technical Information Complete product electrical
and mechanical
specifications
11022637
S42 EDC Controls Function Blocks User Manual Compliant function block
set-up information
L1020718
Latest version of technical literature
Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/
Electrical Installation S42 EDC
Literature references
4 L1022027 • Rev CA • September 2015
Product image
S42 EDC
Nomenclature
S42
Rotation
Y C D E F Q R G S T U H J K L M N P
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.
Electrical Installation
S42 EDC
Product overview
L1022027 • Rev CA • September 2015 5
Theory of operation
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
0
100 %
100 %
Displacement
Current mA
W
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.
Electrical Installation
S42 EDC
Product overview
6 L1022027 • Rev CA • September 2015
Hydraulic schematics
EDC hydraulic schematic
M5
M4
X1
X2
Electrical specifications
Pump displacement versus control current
0
-b -a
ba
100 %
100 %
Displacement
Current mA
S42 EDC electrical specifications
Threshold current
18 mA
End current
105 mA
Maximum current
350 mA at 6 Vdc
Rated power
18 W
A—B Coil Resistance at 24°C (75°F)
20 Ω
C—D Coil Resistance at 24°C (75°F)
16 Ω
Recommended PWM frequency
*
200 Hz
*
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.
Electrical Installation S42 EDC
Product overview
L1022027 • Rev CA • September 2015 7
Pinout
Pin location
A
B
D
C
Pinout
Pin Description
A PWM signal
B Ground
C Ground
D PWM signal
Pin location
B
C
D
A
Alternative pinout
Pin Description
A PWM signal
B Ground
C Ground
D PWM signal
Pin location
2
1
3
4
DEUTSCH 4-way connector pinout
Pin Description
1 PWM signal
2 Ground
3 Ground
4 PWM signal
Electrical Installation S42 EDC
Electrical installation
8 L1022027 • Rev CA • September 2015
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 -
W
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
CW CCW
Positive current to terminal
A, C, 1, 3 B, D, 2, 4 A, C, 1, 3 B, D, 2, 4
Port A flow
Out In In Out
Port B flow
In Out Out In
High pressure servo gauge port
M4 M5 M4 M5
High pressure EDC pilot gauge
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
1 12015797
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
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
Electrical Installation S42 EDC
Electrical installation
L1022027 • Rev CA • September 2015 9
Electrical Installation S42 EDC
10 L1022027 • Rev CA • September 2015
Electrical Installation S42 EDC
L1022027 • Rev CA • September 2015 11
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
electronic components. We specialize in providing state-of-the-art technology and solutions
that excel in the harsh operating conditions of the mobile off-highway market. Building on
our extensive applications expertise, we work closely with our customers to ensure
exceptional performance for a broad range of off-highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring
vehicles to market faster.
Danfoss – Your Strongest Partner in Mobile Hydraulics.
Go to www.powersolutions.danfoss.com for further product information.
Wherever off-highway vehicles are at work, so is Danfoss. We offer expert worldwide support
for our customers, ensuring the best possible solutions for outstanding performance. And
with an extensive network of Global Service Partners, we also provide comprehensive global
service for all of our components.
Please contact the Danfoss Power Solution representative nearest you.
Local address:
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to
products already on order provided that such alterations can be made without changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
L1022027 • Rev CA • September 2015 www.danfoss.com
©
Danfoss A/S, 2015
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