2009 Sales Meeting

Pump & Motor ControlsFor Closed Loop “Hydrostatic” systems

2009 Sales Meeting

Control OverviewSystem & Control CharacteristicsPump ControlsMotor ControlsTeam Exercise

2009 Sales Meeting

Expectations?“Pump and Motor Controls

Training”

What do you want from this training?

2009 Sales Meeting

Machine Functions = Systems

What is the function of the machine?What problem is the customer trying to

solve? (sales value)Performance needs of sub-function?What are the parameters we must

control? as

◦Speed / Ratio◦Torque◦Power◦Position

2009 Sales Meeting

ExamplesPropel (Single path)Dual Path propel (track or wheel)Large drum mixerHigh rotational inertia loadWinch DrivesConveyor drive???

PUMP CONTROLSBrevini

2009 Sales Meeting

Hydrostatic Pump ControlsDirect Displacement ControlServo Controls

◦With Feedback◦Non-Feedback

Pressure Control◦Relief Valve◦Pressure Override

Speed Sensing

2009 Sales Meeting

Direct Displacement Control

2009 Sales Meeting

Pump DesignStroke limiter

Maximumpressurerelief valve

Maximum relief valve

Stroke limiter

Charge pressure setting

Servo Piston

2009 Sales Meeting

SH6V Pump DesignServo piston

Charge pump Cylinder barrel

DisplacementControl

Piston

Slipper

Swashplate

Front bearing

Cradle bearing

Swasplate pusher

Rear bearing Input shaft

Feedback linkage

Bushing

2009 Sales Meeting

SH6V SERIES PUMPModel

SH6V 130

SH6V 70HEN

HER

HLR

HIR

HE2 HIN

Controls

SH6V

2009 Sales Meeting

Controls with feedbackHLR Manual with lever

HIR Hydraulic proportional

HERElectric proportionalHER+HIR also available

SH6V

2009 Sales Meeting

Controls without feedback

HIN

HEN Electric proportional

Hydraulic proportional

HE2 Electric 3 positionSH6V

HI2 Hydraulic 3 position

2009 Sales Meeting

Cut-off Valve OptionWithout cut-off

Pressure cut-off

Electric cut-off

Pressure and electric cut-off

Built in to 130 size

Activating Cut-off will reduce pump flow

SH6V

2009 Sales Meeting

Flow vs. Control Handle AngleHLR Control

Neutral Deadband

2009 Sales Meeting

MANUAL LEVER CONTROL WITH FEED-BACK “HLR”Repeatable, accurate displacement settings

with a given input signal. Handle override mechanism allows rapid

changes in input signal without damaging the control mechanism.

The servo control valve and swashplate are spring centered: No input signal = no pump flow.

Pump will return to neutral after prime mover shuts down.

Pump will return to neutral if external control linkage fails at the control handle or if there is a loss of charge pressure.

2009 Sales Meeting

Hydraulic Proportional Control with FeedBack “HIR”

Precision parts provide repeatable, accurate displacement settings with a given input signal.

Simple – low cost design Pump will return to

neutral: After prime mover shuts

down If there is a loss of input

signal pressure If there is a loss of charge

pressure

2009 Sales Meeting

Electric Proportional Control with FeedBack “HER”

Precision parts provide repeatable, accurate displacement settings with a given input signal.

Simple – low cost design Pump will return to

neutral: After prime mover shuts

down If there is a loss of input

signal pressure If there is a loss of charge

pressure

3 Position Controls

Hydraulic ON-OFF Control HI2 Electric ON-OFF Control HE2

3 Positions: Full A, No Flow, Full B

Pressurizing port Y1 or Y2 forces the pump swashplate to maximum displacement A or B.

Removing pilot pressure will result in the swashplate moving to zero displacement.

3 Positions: Full A, No Flow, Full B

Energizing one of two ON-OFF solenoids (24V or 12V DC), forces the pump to maximum displacement A or B

Switching off both solenoids will result in the swashplate moving to zero displacement.

MOTOR CONTROLSBrevini

2009 Sales Meeting

H2V Motor designTapered Roller Bearing

Bi-Mettallic Barrel

Sferical Valve Plate

CompleteRange of Controls

Stroke limiters

2009 Sales Meeting

Motor ControlsFixed DisplacementTwo PositionProportional DisplacementPressure Compensated

2009 Sales Meeting

H2V MotorModel

H2V 108

H2V 75

H2V 160

H2V 226

H2V 55Controls

2EM+PE

PI

EM

LC

2PI

2EM

PE PE+PI

2009 Sales Meeting

H2V Controls quick cross referenceSAM

PE

PI(*)

2PI(*)

EM(*)

PE+PI

2EM

2EM+PE

LC

Control

Automatic Pressure Control

Hydraulic Proportional

Hydraulic 2 Position

Electroproportional Control

PE + Hydraulic Override

Electric 2 position

2EM + Pressure Control

Manual Control

PE100 Automatic Pressure Control

(*) +PE Option also available.

2009 Sales Meeting

Endcap Position – Control Logic

Pressue Controls

Hydraulic Controls

Electric Controls

M

PE

PE100

PE+PI PI 2PI

PI+PE

2PI+PE EM

2EM

EM+PE

2EM+PE LC

Endcap Positon

1 (Vgmax - Vgmin)       • • • • • • • • •

2 ( Vgmin - Vgmax) • • • • •     • •     •

2009 Sales Meeting

H2V Mounting Position

2From Min. to Max.1

From Max. to Min.

PI

2PI

EM

2EM

2EM+PE

LC

PE

PI 2PI

EM

PE+PI

2EM

LC

PE100

PI + PE

2PI +PE

EM+PE

2009 Sales Meeting

PE - Pressure Compensated

Default to Min. Displacement◦ High speed, Low torque

If system pressure exceeds threshold, Displacement will increase◦ Lower speed, Higher Torque

Max

2009 Sales Meeting

PE+PI- Pressure Compensated

Similar to PE, except pressure setting can be decreased by X2 Pressure signal.

Override PE (Pressure Comp) to Max Displacement

Max

2009 Sales Meeting

PI- Proportional HydraulicDisplacement Proportional

to X2 Pressure signal.Optional: Default to Max or

Min Displacement

Max

Max

2009 Sales Meeting

EM- Proportional ElectricDisplacement Proportional

to electical current signal.Optional: Default to Max or

Min Displacement12 or 24 V coils

Max

Max

2009 Sales Meeting

2PI- Two Position Hydraulic

Max or Min Displacement – changed by X2 pressure

Not proportionalOptional: Default to Max or

Min Displacement

Max

Max

2009 Sales Meeting

2EM- Two Position Electric

Max or Min DisplacementNot proportionalOptional: Default to Max or

Min Displacement12 or 24 V coils

Max

Max

2009 Sales Meeting

PI+PE: Propor. Hydraulic w/ Pressure Override

Displacement Proportional to X2 Pressure signal.

If system pressure exceeds threshold, Displacement will increase. (Overriding X2 command)

Default to Min Displacement (X2 and System at low press)

Max

2009 Sales Meeting

2PI+PE: Two Position Hydraulic w/ Pressure Override

Max or Min Displacement – changed by X2 pressure

Not proportionalIf system pressure

exceeds threshold, Displacement will increase. (Overriding X2 command)

Default to Min Displacement (X2 and System at low press)

Max

2009 Sales Meeting

LC- Manual DisplacementAdjust displacement by

turning hand wheelM

ax

2009 Sales Meeting

Pump & Motor CombinationProportional Pump / 2 position

Motor(s)Phased Pump & MotorElectronic Control SystemsDual Path Considerations

2009 Sales Meeting

Team ExerciseForm 4 teamsPick an application or functionPrepare concepts for a drive

system and two alternative control concepts.

Present your solutions and describe why you chose them.◦ Don’t worry about sizing components.◦ Emphasize control strategies.

20 minutes to prepare