1. SDE0337GB(02-03)
The Standard in Information and Diagnostic Systems
• 260 kW or 360 kW test capabilities
• Comprehensive test programs
• Microprocessor controlled
Sun RAM 3000 Chassis Dynamometer
Test Lane Equipment
flexibility, adaptability, profitability
Technical Specifications
Options
• Fan blower, moveable, with cable connection
• Pressure regulator with water trap
• Installation frame RAM 3000 U
• Restraining straps kit
• Emission analyser (MGA 1500, DGA 1000)
RAM 3000 U-260kW RAM 3000 U-360kW
General
Maximum driving speed km/h 260 260
Temperature range °C 0 - 50 0 - 50
Maximum wheel braking performance km/h kW 260 / 260 260 / 360
Pre-selectable constant speed km/h 0 - 300 0 - 300
Displays
Speed km/h 0 - 300 0 - 300
Power kw 0 - 400 0 - 400
Power Supply
Voltage V 3N - PE - 400 V~ 3N - PE - 400 V~
Frequency Hz 50 50
Fuse rating slow-blow A 25 25
Compressed air bar 7,5 7,5
Mechanics System
Length x width mm 3270 x 1050 x 654 3270 x 1050 x 654
Roller diameter mm 320 320
Roller length mm 560 560
Minimum maximum usable roller width mm 800 - 2200 800 - 2200
Testable wheel size " >= 10 >= 10
Lifting threshold stroke mm 110 110
Lifting load t 3 3
Roller displaced in height mm 96 / 71 96 / 71
Maximum axle weight t 3.5 3.5
www.sun-diagnostics.com
All dimensions and drawings within this publication are a guide only, before carrying out any civil works,
always obtain the current installation drawings from the service department. Nothing contained within this
publication is intended to extend any warranty or representation, expressed or implied, regarding the
products described herein. Any such warranties or other terms or condition of sale of products shall be in
accordance with Snap-on/Sun Standard Terms and Conditions of Sale for such products, which are
available on request. The manufacturer reserves the right to change or delete models and/or specifications
without prior notice. Snap-on and Sun are registered trademarks.
Snap-on Sun Tech Systems
Horsley’s Fields King’s Lynn Norfolk PE30 5DD
Tel: +44 (0) 1553 692422 Fax: +44 (0) 1553 774682
Email: sun.diagnostics@snapon.com
Sun Diagnostics Europe
Email: ies@sun-diagnostics.com
The Standard in Information and Diagnostic Systems

2. For many years Sun has been associated as an industry leader in vehicle testing and in particular its expertise
with chassis dynamometers. The Sun RAM 3000 Chassis Dynamometer is available in two configurations 260 kW
or 360 kW both offering the same high specifications and detailed test procedures. Not only used as a method
of determining and enhancing engine performance, the chassis dynamometer can provide a platform to carry
out engine related fault diagnosis and fuel consumption analysis without leaving the workshop. The Sun RAM
3000 Chassis Dynamometer uses an Eddy current brake that offers more versatile operating possibilities.
The mobile PC platform is used to control and display the measurement results from the Sun RAM 3000 Chassis
Dynamometer. Detailed analysis can be carried out through the screen graphics or print outs.
Sun Chassis Dynamometer
Key Topic Fuel Consumption
The practical use of this unit opens unimagined
possibilities in everyday life. Recent opinion polls
have shown that almost 20% of all drivers are
dissatisfied with the fuel consumption of their
vehicles. This problem can be controlled.
Emission tester combinations allow to simulate
various driving conditions and to draw exact
conclusions from the respective emission behaviour
concerning the high fuel consumption etc.
• Before initiating time-consuming measurements
or detail tracing, you can make clear statements
whether the fuel consumption actually is too
high or whether the customer must accept such
a weak point caused by constructional or
service conditions.
• Only in doing so can the number of errors,
which normally are approached by mere
guesswork, in a simple way be limited.
• As for example, it is possible to expose in this
way any too heavily dimensioned acceleration
enrichment or to recognise whether the cold-
start enrichment is too long active.
• It is also possible to determine in which way the
different driving styles affect consumption.
The comprehensive test programs include:
The following programs are available:
1. Program P-max
Acceleration of the vehicle from start speed
up to maximum speed is done by swiftly
changing to the highest gear. After exceeding
the point of maximum performance, the clutch
is depressed and the vehicle coasts to standstill.
The loss in performance is determined whilst the
vehicle is coasting. Once completed the values
for performance, speed, and engine RPM are
indicated both numerically and graphically.
2. Program V-constant
It is possible to select a certain limit speed to
which the test stand limits the speed of the
vehicle being tested. The limit speed can also be
changed during the test so that the vehicle
performance at different speeds can be tested.
The measured values obtained by the preset
speed are indicated after finishing the test.
3. Program Power Curve
The program "power curve" allows the
automatic taking of power curves. For that
purpose, any speed range can be chosen by
selecting both a high and a low speed limit.
After starting the program, the test stand
automatically changes the limit speed in the
selected zone and records the sequence of the
measured values. Having ended the test, a
numerical and graphical evaluation can made.
4. Program Tacho Test
By means of program "tacho test" it is possible
to test the accuracy and linearity of the display at
the vehicle tachometer. This program allows to
select maximum 10 individual speeds for testing.
During the test, the test stand presets the testing
speed. As soon as this speed is reached on the
vehicle tachometer, the actual driven speed is
stored. After the test, the preset and measured
values as well as the respective deviations from
each other are displayed as a percentage.
5. Program F-constant
Program F-const is suited for the simulation
of load applications. For that purpose, it is possible
to preset a defined force the testing vehicle must drive
to in order to simulate uphill driving. The load intensity
can also be changed during the test. At the end of test,
the measured values resulting from the pre-set load
application are shown.
Features
• Eddy current brake measurement
• Remote control and hand controller terminal
• Two measurement ranges 260 kW or 360 kW
• Fully galvanised chassis
• Side restraining rollers
• Speed and temperature measurement
• Flexible and easy to use software.
Configuration
• Precision balanced rollers
• Pneumatic lifting device
• Microprocessor controlled
• Zinc plated chassis
• Mobile PC platform
• Oil temperature measurement
• RPM signals measurement (petrol and diesel)
• Side restraining rollers
• Remote control and LCD hand controller
• Comprehensive and easy to use software.