s42 pump electrical displacement control (edc) …files.danfoss.com/documents/s42 electrical...

MAKING MODERN LIVING POSSIBLE

Electrical Installation

S42 PumpElectrical Displacement Control(EDC)

powersolutions.danfoss.com

http://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 referencesS42 EDC literature references.......................................................................................................................................................4Latest version of technical literature......................................................................................................................................... 4

Product overviewProduct image................................................................................................................................................................................... 5Nomenclature ...................................................................................................................................................................................5Theory of operation.........................................................................................................................................................................6Hydraulic schematics...................................................................................................................................................................... 7Electrical specifications.................................................................................................................................................................. 7

Electrical installationPinout....................................................................................................................................................................................................8Pin compatibility...............................................................................................................................................................................9Input/output matrix........................................................................................................................................................................ 9Mating connector.............................................................................................................................................................................9


Contents

L1022027 • Rev CA • September 2015 3

S42 EDC literature references

Literature title Description Literature number

S42 Axial Piston Pumps Technical Information Complete product electricaland mechanicalspecifications

11022637

S42 EDC Controls Function Blocks User Manual Compliant function blockset-up information

L1020718

Latest version of technical literature

Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/


Literature references


http://powersolutions.danfoss.com/literature/

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). Pleaserefer to the pump’s nomenclature to determine if the pump is equipped with the proper option. Thenomenclature can be found on the pump’s nametag. For nomenclature details, refer to S42 Axial PistonPumps Technical Information, 11022637.


Product overview


Theory of operation

The Electrical Displacement Control (EDC) uses an electrohydraulic Pressure Control Pilot (PCP) stage toprovide a differential pilot pressure. The PCP stage converts an electrical input signal to a hydraulic inputsignal to operate a spring centered sensing piston. The sensing piston produces a mechanical input tothe servo control valve which ports hydraulic pressure to either side of the servo piston. The servo pistonoperates 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 mechanicalfeedback that regulates the servo valve in relation to swashplate position to maintain displacement atthe commanded level regardless of changes in system pressure. Any swashplate position error is fed backto the servo valve for instant correction.

The servo control valve has variable geometry porting to regulate swashplate response relative to inputcommand. The control performs small displacement change commands with maximum controllabilitythroughout the entire stroking range of the pump. It completes large displacement change commandswith rapid swashplate response. Optional servo supply and drain orifices are available for specialresponse needs.

EDC proportional actuation

0

100 %

100 %

Dis

plac

emen

t

Current mA

W Warning

Unintended vehicle or machine movement hazard. The loss of hydrostatic drive line power, in any modeof operation (forward, neutral, or reverse) may cause the system to lose hydrostatic braking capacity. Youmust provide a braking system, redundant to the hydrostatic transmission, sufficient to stop and hold thevehicle or machine in the event of hydrostatic drive power loss.


Product overview


Hydraulic schematics

EDC hydraulic schematic

M5

M4

X1 X2

Electrical specifications

Pump displacement versus control current

0-b -a

ba

100 %

100 %

Dis

plac

emen

t

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 willsignificantly reduce EDC performance.


Product overview


Pinout

Pin location

AB

DC

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

21

34

DEUTSCH 4-way connector pinout

Pin Description

1 PWM signal

2 Ground

3 Ground

4 PWM signal


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 -

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


4 way black Weather-Pack tower sealed femaleconnector assembly

1 12015797

Female terminals (18 to 20 AWG) 4 15408312

Cable seals (2.03 to 2.85 mm cable diameter) 4 12015323


DEUTSCH connector parts list


4 way gray connector assembly 1 DEUTSCH DT06-4S-E003

Female nickel-plated terminals (16 to 18 AWG) 4 DEUTSCH 0462-201-16141



Electrical installation


Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic andelectronic components. We specialize in providing state-of-the-art technology and solutionsthat excel in the harsh operating conditions of the mobile off-highway market. Building onour extensive applications expertise, we work closely with our customers to ensureexceptional performance for a broad range of off-highway vehicles.

We help OEMs around the world speed up system development, reduce costs and bringvehicles 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 supportfor our customers, ensuring the best possible solutions for outstanding performance. Andwith an extensive network of Global Service Partners, we also provide comprehensive globalservice for all of our components.

Please contact the Danfoss Power Solution representative nearest you.

Local address:

Danfoss Power Solutions GmbH & Co. OHGKrokamp 35D-24539 Neumünster, GermanyPhone: +49 4321 871 0

Danfoss Power Solutions ApSNordborgvej 81DK-6430 Nordborg, DenmarkPhone: +45 7488 2222

Danfoss Power Solutions (US) Company2800 East 13th StreetAmes, IA 50010, USAPhone: +1 515 239 6000

Danfoss Power Solutions Trading(Shanghai) Co., Ltd.Building #22, No. 1000 Jin Hai RdJin Qiao, Pudong New DistrictShanghai, China 201206Phone: +86 21 3418 5200

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 toproducts 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

Products we offer:

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• Closed Circuit Axial PistonPumps and Motors

• Displays

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• Microcontrollers andSoftware

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