Eaton Compressor & Fabrication SDC 8200 User Manual

Electro-hydraulic Fan Drive System

Efficient cooling power,
where you need it.

Complete
Fan Drive
Systems

The Electro-hydraulic (EH) Fan Drive System cools
your engine and vehicle sub-systems by controlling
a hydraulic pump and motor with a digitally
programmable controller.

The EH Fan Drive System equipped with the Two
Channel Amplifier offers fast, quiet and efficient
cooling for engine coolant, hydraulic fluid, charge air
and entire engine compartment.

Electro-hydraulic Fan Drive
benefits include:

• Flexible installation for
optimum fan location

• Elimination of belt
maintenance

• More accurate control
of charge air temperature
can help reduce engine
emissions

• Improvement in fuel

economy

• Increased power output

• Choice of variable- or xed-

displacement systems

Eaton can be your
single source for fan drive
systems.

Eaton Fan Drive Systems
can include:

• Pump (xed- or variable-

displacement)

• Motor

• Valves & manifold

• Electronic controls

• Compact patented

reservoir

• Filter

• Hoses and ttings

A fully integrated
electronically controlled

Eaton Hydraulic Fan Drive

System delivers a compre­hensive cooling solution with
complete controllability.

Table of
Contents

Applications and Benefits 3

Electronic Controller Options 4

Integrated Fan Drive System, Fixed-displacement Pump 6

Stand-Alone Fan Drive System, Variable-displacement Pump 7

Fan Drive System Pump and Motor Guide 8

Hydraulic Components 9

Engineered Systems 10

Information contained in this document is subject to change without notice. Performance values are typical values. Customers are responsible for selecting products for

their applications using normal engineering methods.

Applications
and Benefits

Applications:

On-highway vehicles

• Buses

• Recreational vehicles

Construction machinery

• Excavators

• Loaders

• Cranes

• Forklifts

Agriculture machinery

• Tractors

• Forest machinery

Benefits of
Electronic Control

• Functions with Engine Con­trol Module Input or Vehicle

Sensor and Switch Inputs:

– Allows a wide variety of

congurations.

• Communications via RS
323 or CANbus link:

– Provides versatility in

communications.

• Conditions engine control

module signal:

– Filters noise, inverts sig-

nal, and re-scales signal
to optimize control.

• Uses closed-loop current

control, instead of voltage
control:

– Improves control

accuracy of fan speed by
eliminating temperature
effects on proportional
valve coil.

application SpEcific BEnEfitS

Buses

• Modulates fan speed

– Reduces operating power

and noise.

• Limits fan speed on start-up

– Reduces fan power draw

on start-up.

• Increased fuel economy

– Reduced fan power re-

quirements lead to better
fuel economy.

Recreational Vehicles

• Ramps between fan speed

settings

– Ensures gentle speed

transitions and provides
smooth operation.

• Reduces operation noise

– Electronic control reduces

the noise of the fan and
pump, providing better
passenger comfort.

Wheel Loaders

• Encapsulated construction

– Allows installation in

more exposed locations

on the vehicle.

• Flexible installation

– The electronic control of

the Fan Drive System al-

lows exible installations

for optimum fan location.

• Fan reverse feature

– Reverse fan operation fa-

cilitates removal of debris
from the vehicle radiator.

3 Eaton Electro-hydraulic Fan Drive System E-SYFD-MROO1-E3 October 2008

Fan Drive
Configuration

Power Requirement

• 12 VDC or 24 VDC

Laptop or PC
Communication

• RS232 for
communication with GUI

Inputs

• Five user congurable

inputs

– Two Thermistor inputs

– Two Digital or Switch

inputs

– Engine Control

Module cooling
command voltage
signal

Or

• Optional CANbus signal

Electronic
Controller
Options

TCA Electronic Controller

The TCA at the heart of the
EH Fan Drive System, is a

rugged, fully encapsulated
digitally programmable con­troller specially designed for
mobile environments.

It is prepared for CANbus
communications on a ve-

hicle network. Software for
controlling the EH Fan Drive

System is loaded in the con­troller memory at the factory.
Control software parameters

are adjusted via RS 232 hook-

up to a laptop computer.

The TCA controller is available
for both 12 V or 24 V vehicle

power systems. With 5 con-

gurable inputs and 2 Pulse
Width Modulated (PWM)
outputs, the TCA can inter-

face with a variety of system
components and drive up to
two electro-hydraulic valves.

Outputs

• PWM current
controlled driver for
proportional flow control

• On-off driver for fan
off or fan reverse

Mechanical

• Polymer enclosure

• Fully encapsulated

electronics

• Flying lead harness
with 10-pin MetriPak

connector

• Two Mounting anges:

#8 fasteners

• Dual color LED for
status and diagnosis

Environment

• Operating temperature:

-40°C to +85°C

• Meets EMC standards

off-road vehicle

• Reverse battery and load

dump protection

• Input/output short circuit

protection

• UV resistant

• Water: temporary

immersion

• Random vibration

5.8 Grms

• Shock: 50 G

Two Channel Amplifier (TCA)

EFX Electronic Controller

Eaton EFX electronic control­lers and I/O modules provide
a full range of electronic con­trols. With an array of control­ler options and I/O modules,
an EFX system can address
any application need. All EFX
products are IP67 rated and
are built for harsh mobile
and industrial application

environments. The EFX line is
programmed and congured
using Eaton CONTROL F(x)™

software.

EF(x) Controllers

Applications

Excavators, forestry,
telehandlers, utility vehicles,
cranes, ag machinery, paving

Specifications

Four different EFX controllers

and 3 I/O expansion modules

provide analog, digital, and
frequency inputs as well as

digital, PWM, and current-

controlled outputs. Each EFX
controller has both CANopen
and J1939 interfaces.

4 Eaton Electro-hydraulic Fan Drive System E-SYFD-MROO1-E3 October 2008