BLN-95-9043_G_A_ME_TI_REV_4

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KEP

Electronic

Foot Pedal

Technical

Information

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Description ....................................................................................................................................................... 3

Features 3

r ering In ormation 3Technical Data .................................................................................................................................................4

Theory of Operation ...................................................................................................................................... 4

Dimensions ....................................................................................................................................................... 5

utput Characteristics ..................................................................................................................................6

onnection Drawings 6

Pin Connections ..............................................................................................................................................7

Application Diagram 1 .................................................................................................................................8

Application Diagram 2 .................................................................................................................................9

1090052 Amplifier ........................................................................................................................................10

ustomer Service 11

CONTENTS

KEP Electronic Foot Pedal

Technical Information

2005 Sauer-Danfoss. All rights reserved. Printed in U.S.A.

auer-Dan oss accepts no responsi i ity or possi e errors in cata ogs, roc ures an ot er printe materia.

auer-Danfoss reserves the right to alter its products without prior notice. This also applies to products

already ordered provided that such alterations arent in conflict with agreed specifications. All trademarks in

this material are properties of their respective owners. Sauer-Danfoss and the Sauer-Danfoss logotype are

trademarks of the Sauer-Danfoss Group.

Front cover ustrat ons: 2286, 2287, 2288, 2289, 2218

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DESCRIPTION The KEP Electronic Foot Pedal is used to drive vehicles equipped with hydrostatic

transmissions an /or e ectronica y-contro e engines. It provi es an e ectrica signa to

t e engines e ectronics proportiona to t e egree o pe a actuation. T e KEP eaturesa sensor specifically designed for heavy vehicle applications.

FEATURES Meets or excee s FMVSS-124 requirements

Low pivot point eliminates need for external heel rest

Controls acceleration and deceleration smoothly

Potentiometer mounting location minimizes mounting space requirements andreduces vulnerability to dirt, water, and foreign contaminants

ORDERING

INFORMATION

se Product configuration codetable below to order the KEP Electronic Foot Pedal.

Three models are presently available. They vary in the pedal angle, as described in

he Technical data, page 4. Consult Customer Service for variations in mounting styles,

witches, connectors, electrical characteristics, etc. For contact information, see Customer

service, page .

A Product Serieso e Descr pt on

KEPA Series KEPA E ectronic Foot Pe a

B Typeode Description

1 Uni irectiona , no switc Stan ar

C Foot Pedal

ode Description

4 Rubber foot pad (Standard)

5 Custom rubber pedal

Contact actory

D Terminationode Description

1 One 3-pin Packard Weather-Pack

s rou connector Stan ar

2 One 3-pin Deutsch shroud

connector for Caterpillar engine

interface and one 4-pin Cannon

Sure Sea s rou connector

E Electrical CharacteristicsCo e Descr pt on

2.5 potentiometer

(Standard)

1.4 potentiometer an

Caterpi ar position sensor

F Vehicle Toeboard and Pedal AnglesCode Vehicle

Toeboard

Pedal Angle

6 6 to 15 35 Stan ar

0 to 5 45

8 16 to 25 28

Product Configuration CodeA B C D E F

K E P A

Accessor es Amplifier board



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TECHNICAL DATA Operating temperature 40 to +70 C (-40 to +158 F)

Pedal actuation force

(Measured 8 inches from pivot point)

lbs (to begin movement) 12 lbs (for full travel)

Pedal angles available for vehicles

with these toeboard angles

to 5, the 45 angle pedal is recommended

to 15 toeboards, use a 35 pedal

16 to 25 toeboards, use a 28 pedal.

Materials

Castings Irridited aluminum

Potentiometer shaft tainless steel

Ro er an spr ng s eeve ass e ny on

Base p ate inc p ate stee

Springs tainless steel

Supply voltage .0 V DC

Maximum rated output current 0 mA

Pedal resistance 500 500 o ms.

Re erence t e in Connections page 7

Output voltage

I e pos t on % to 12% of input voltage

Fu pe a stro e 3% to 92% o input vo tage

Reference the utput Characteristics page 6

Maximum voltage The pedal will continue to function per specification after applying

16 volts across any two connector pins for five minutes.

Weight .5 lb

THEORY OF

OPERATION

The KEP Electronic Foot Pedal accepts a typical supply voltage of 5 volts and varies the

utput from 10% to 88% of supply through the pedals rated angle. Three standard

ccelerator position sensor models are available for vehicle toeboard angles ranging

from 0 to 25. Custom mounting, termination and electrical characteristics are available

upon factory request.

Two applications are demonstrated inApplication diagram 1andApplication diagram

2 pages 8 and 9. The first uses the Sauer-Danfoss Amplifier Board (refer to 1090052

Amplifier, page 10) to generically control a hydrostatic transmission. The amplifier will

provide the output current necessary for controlling an EDC proportional to foot pedalposition. Both the Foot Pedal and the Amplifier Board operate unidirectionally; therefore,

n F-N-R (double pole, double throw switch or relay) must be provided to operate the

pump on both sides of center. The second application diagram uses three KEP Foot

Pedals to drive a Sauer-Danfoss S1X microcontroller, which in turn controls the track

peed of a trencher.

Connections are made to the Weather-Pack connector mate with Sauer-Danfoss kit part

number K08620.

Deutsch and Cannon mating connectors are not provided by Sauer-Danfoss.



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DIMENSIONS

234 [9.23]45

21 [0.81]

41 [1.63]

254 [10.00] MAX.

864 [34.0 1.0]

1666A



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OUTPUT

CHARACTERISTICS

CONNECTION DRAWINGS 2 500Potentiometer Sensor Connection

Weather Pack Device Connector

0.5

Full pedal stroke

Output voltage

Supply voltage

1.0

Idle

1665A

RED

WHITE

BLACK

A

B

C

1705

A

B

C

1704



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PIN CONNECTIONS

Deutsch pin connections. A connector and pigtail are provided.

Standard pin connections to the Foot Pedal potentiometer. The 1.4 kpotentiometer is

used only with a two-connector pedal.

RED

C

BLK

B

WHT

A

POTCABLE

A

B

C

25

00

FULL

STROKE

ORG

+

GRN

BLK

POTCABLE

A

B

C

14

00

FULL

STROKE

1664

ORG

+

GRN

SIGNAL

BLK

A +(RED)

C SIGNAL(WHITE)

B -(BLACK)

1738



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APPLICATION DIAGRAM 1

Controlling a single coil EDC requires a Double Pole, Double Throw (DPDT) Switch for

changing direction.

Controlling a dual coil EDC requires a Single Pole, Double Throw (SPDT) Switch for

changing direction. Also, just one coil of a dual coil can be wired and switched as in the

Application diagram 2, page 9.

Forward

ReverseEDC

A

B

C

D

PV

1

2

3

4

5

6

7

+12 V

GND

GND

VALVE

VALVE +

+8 V REG

INPUT

SPDT

Switch

1993

Amplifier

1090052

Off

1

2

3

4

5

6

7

+12 V

GND

GND

VALVE

VALVE +

+8 V REG

INPUT

On

Forward

Reverse

EDC

+12 V DC

Ground

DPDT

Switch

1706

Amplifier

1090052



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KEP and S1X microcontroller used in hydrostatic trenching application.

APPLICATION DIAGRAM 2

Parking brake

PPU

PPU

A IA OA OD O

D OD O

D 1

D 1

D 1D 1D 1 D 1 D 1

D O

D O

D O

D O

D O

PPU

RS232

1662A

Attachment neutralHorn

Speed switch

Engine

Alternator

Auto

Manual

Display/Calibrate

Left steer

foot pedal

Right steer

foot pedal

Brake/inchfoot pedal

F-N-R

Seat switch

Foot switch

Parking brakeWarning light

Mobile/work



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This amplifier is designed to work with the Sauer-Danfoss foot pedal (KEP). A typical

pplication would be controlling a variable volume piston pump that is fitted with an

ectrica isp acement contro EDC . Trim pots on t e amp i er a ow t e output eve sto be tailored with respect to foot pedal position. An enclosure protects the internal

ircuit board and provides a means of mounting. The control has three LEDs to indicate

12 V power, +8 V regulator and output current.

Electrical CharacteristicsSupp y vo tage 12 V DC 11 to 15 vo ts

Output current un -po ar Maximum 160 mA wit a 22 o m oa

Input impedance 200 k

EMI/RFI protection

Adjustments

(reference drawing below)

1. OFFSET sets start current (threshold)

2. MAX sets maximum current output3. GAIN sets current output wit respect to oot pe a position

All adjustments are clockwise (< 1 turn) for increasing. To access the adjustments,

remove the 4 cover screws.

+8 V REG indicator

Output indicator

CHASSISGND

+12VDC

POWERGND

SIGNALGND

VALVEGND

VALVE+

+8VREG

INPUT

CHASSISGND

+12 V Power indicator

GAIN

MAX

OFFSET

1995

1090052 AMPLIFIER



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CUSTOMER SERVICE Order From

Sauer-Danfoss (US) Company

ustomer Service Department3500 Annapolis Lane North

Minneapolis, Minnesota 55447

Phone: (763) 509-2084

Fax: 763 559-0108

Sauer-Danfoss (Neumnster) GmbH & Co.

rder Entry Department

Postfach 2460, D-24531 Neumnster

Krokamp 35, D-24539 Neumnster

P one: +49 4321 871 0

Fax: +49 4321 871 284

Device repair

Return to:

Sauer-Danfoss (US) Company

Return Goo s Department

3500 Annapolis Lane North

Minneapolis, Minnesota 55447

For devices in need of repair or evaluation, include a description of the problem and

w at wor you e ieve nee s to e one, a ong wit your name, a ress an te ep one

num er.



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Sauer-Danfoss Mobile Power and Control Systems

Market Leaders Worldwide

Sauer-Danfoss is a comprehensive supplier providing complete

systems to t e g o a mo i e mar et.

Sauer-Danfoss serves markets such as agriculture, construction, roadbuilding, material handling, municipal, forestry, turf care, and many

others.

We offer our customers optimum solutions for their needs and

develop new products and systems in close cooperation and

partnership with them.

Sauer-Danfoss specializes in integrating a full range of system

components to provi e ve ic e esigners wit t e most a vance

tota system esign.

Sauer-Danfoss provides comprehensive worldwide service for its

products through an extensive network of Authorized Service

Centers strategically located in all parts of the world.

Sauer-Danfoss (US) Company2800 East 13t Street

Ames, IA 50010, USA

Phone: +1 515 239-6000, Fax: +1 515 239 6618

Sauer-Danfoss (Neumnster) GmbH & Co. OHG

Postfach 2460, D-24531 Neumnster

Krokamp 35, D-24539 Neumnster, Germany

Phone: +49 4321 871-0, Fax: +49 4321 871 122

Sauer-Danfoss (Nordborg) A/S

DK-6430 Nordborg, Denmark

P one: +45 7488 4444, Fax: +45 7488 4400

www.sauer-danfoss.com

OUR PRODUCTS

Hydrostatic transmissions

Hydraulic power steering

E ectric power steering

Electrohydraulic power steering

losed and open circuit axial piston

pumps and motors

ear pumps and motors

Bent axis motors

rbital motors

Transit mixer rives

Planetary compact gears

Proportional valves

Directional spool valves

artri ge va ves

Hydraulic integrated circuits

Hydrostatic transaxles

Integrated systems

Fan rive systems

Electrohydraulics

Microcontrollers and software

Electric motors and inverters

Joysticks and control handles

Disp ays

Sensors

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BLN-95-9043_G_A_ME_TI_REV_4

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