This user manual is an essential part of the dynoKRAFT MPS380 dynamometer.
All functions and settings described apply to the original YourDyno software accordingly.
This product and all it's components are an custom built device designed for professional use, and to be used solely at research and development facilities for such purposes.
© 2020 VISION ENGINEERING e.K. , All rights reserved.
This manual is copyrighted by VISION ENGINEERING e.K., hereinafter referred to as dynoKRAFT.
All rights reserved.
Original user manual for the dynoKRAFT dynamometer.
This manual, the controller and / or the software described in it is furnished under license and may only be used in accordance with the terms of this license.
This manual is for informational purposes only, is subject to change without notice and should not be construed as a commitment by dynoKRAFT.
dynoKRAFT assumes no responsibility or liability for errors or inaccuracies that may appear in this manual.
No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by anybody means, electronic, mechanical, recording or otherwise, without the prior written consent of dynoKRAFT.
All trademarks, trade names, service marks, or service names owned or registered by another company and used in this manual are the property of their respective companies.
Manufacturer / Service / Warranty:
VISION ENGINEERING e.K. / dynoKRAFT
This products is meant to be used by trained technicians and tuners only.
Owner/user assumes responsibility for his or her own actions when using these products. VISION ENGINEERING e.K. hereby expressly disclaims liability and shall not be responsible for incidental, consequential and contingent damages or any kind or nature, including, without limitation: damages to persons or property, whether a claim for such damages is based upon warranty, contract, tort or otherwise; damages due to or arising out of the loss of time; or loss of profits.
VISION ENGINEERING e.K. shall not be responsible for any damages caused by the presence of error or omission in any of its manuals, instructions or related materials.
Conventions used in this manual
The conventions used in this manual are designed to protect both user and equipment and to assure a safe work environment.
The warning indicates a serious hazard or risk of machine damage.
Caution means that failure to perform or incorrectly perform the described procedure can damage the test bench.
Information gives the user additional useful advice.
Precautions and dynamometer safety
Your dynoKRAFT engine dyno is a safe and proven way to test the engines performance in a repeatable test conditions.
To assure problem free operations you should note these precautions and use common sense at all times!
Engines exhaust gasses
Always assure proper dyno room ventilation and use engine exhaust extraction system which is adequately scaled to remove all exhaust gasses from the room in which people are working in.
Fail to do so may result in serious hazard to dyno room operators and will impact engine’s performance.
Warning! Carbon monoxide / Toxic gasses!
Combustion engine exhaust gasses contain toxic carbon monoxide. Breathing it can cause death.
Always operate the dynamometer in well ventilated area. Always use exhaust gasses extraction system during test runs.
Noise and debris
Keep in mind that running an engine test at high RPM and Load will create a noisy work environment which may affect one’s ability concentrate on task he’s performing. Prolonged exposure to noise may result in head ache or nausea.
Always use eye protection to avoid eye damage from any debris or dirt which may be found in the air either because of extensive room ventilation or due to equipment damage.
Warning! Excessive noise / Eye damage.
Always use eye and ear protection while working with dynamometer. Fail to do so may result in serious health issues, hearing loss or visual impairment.
All rotating parts are potential source of serious accident. Therefore always operate the dynamometer with all coverings properly installed. Use additional covering or safety means to secure any visible parts of the engine or dynamometer. Always ware tight sleeves to avoid getting dragged by any rotating parts.
Warning! Rotating parts.
Never operate an dynamometer without properly installed coverings. Always use cloths with tight sleeves.
Fail to do so may result in getting dragged by rotating parts or components.
During an dynamometer test and substantial amount of heat will be generated by both the engine and dynamometer equipment. The air temperature in the dyno room will rise gradually.
Additionally some surfaces of the combustion or electric engine may get very hot.
dynoKRAFT is encouraging dynamometer operators to use an infrared thermometer to check if the surface temperatures are in safe range. Temperature above 55°C is considered harmful.
Warning! Hot surfaces.
Avoid touching of hot surfaces during and after the dynamometer tests.
Some areas of combustion engines such as exhaust system can get extremely hot and touching them may cause severe tissue burn.
Electric power. Compressed air
The dynoKRAFT dynamometers are operated using electric power and compressed air (depending on model).
Do not remove any covering panes, perform any service or repairs or open any electric cabinets under power.
Any repairs or service which requires accessing the dynamometers electrical system must be performed by qualified electrician.
Warning! Potentially lethal voltages.
Never perform any service or remove any protective panels or open electric cabinets without previously disconnecting the main AC power cord.
Always wait min. 5 minutes after turning off the dynamometer main switch to allow for complete discharge of electromagnetic coils of the Eddy Current Brakes.
Fail to do so may result in lethal electric shock.
Before performing any service operation or repairs to pneumatic components always release the pressure from the pneumatic system.
Warning! Eye damage.
Always use eye protection while working with dynamometers pneumatic systems.
Fail to do so may result in serious eye damage and visual impairment.
Always keep minimum safe distance while working with dynamometers so that in case of equipment or engine failure, fire or other hazard the risk of accident is minimized.
Excessive noise or vibration of dynamometer usually indicates serious fault and should be directly solved.
Always verify emergency brake operation before using your dynamometer.
Before performing any tests always verify if the dynamometer and vehicle you’re about to test are properly secured.
Ensure that both the dynamometer and vehicle you’re testing are sufficiently cooled.
Never perform any servicing of the dynamometer unless explicitly recommended in manual..
Caution. Risk of equipment damage. Potential safety hazard.
Not obeying to these rules may result in equipment damage, potential safety hazard to dynamometer operators and can result in loss of warranty.
Specifications and requirements
Permissible operating limits and requirements
|Max. RPM||5000 1/min|
|Rotational inertia (without coupling system)|
|Recommended eddy current brake load for constant operation|
up to 15 Min: 100%
up to 30 Min: 85%
up to 45 Min: 80%
up to 60 Min: 70%
over 60 Min: 60%
|Eddy current brake coils temperature||Max. 180 ° C|
The thermostat switches off the power supply to the eddy current brake at ~ 167 ° C.
At ~ 127 ° C the power supply is switched back on again.
|Electric power supply||400V AC / 32A / 50Hz||see nameplate|
|Environmental and workshop requirements||Value||Comments|
|Room temperature||+10°C to +50°C|
|Relative humidity||10 - 65%||no condensation|
|PC-System||preferred: Windows 10 64-Bit|
|Internet- and Phone||Required for software and firmware updates and technical support.|
Dynamometer installation and commissioning
Installation and commissioning
The test stand must be installed on a solid concrete floor with sufficient load-bearing capacity (min. 2 T / m²).
The floor should have a flatness of 2 mm per 1 m (or better).
The MPS380 dynamometer ist not to be operated without adequate fixation of dynamometer chassis which assures correct transfer of counter-torque generated by retarder.
See "Permissible installation scenarios".
Installation and commissioning can only be carried out by a dynoKRAFT technician.
To avoid excessive noise during data transfer, please keep the USB connection / cable between ADAQbase and the computer as short as possible.
To lift the dynamometer please use the four (4) hooks provided at each corner of the chassis.
Please make sure to use lifting equipment with adequate load capacity (see machine label)
Permissible installation scenarios
Installation on T-slot table
This is the preferred installation which allows correct counter-torque transfer between engine stand and the dynamometer chassis.
The counter-torque is transferred via the t-slot table, which should be installed on vibration dampers.
Installation on concrete floor / foundation
Further more it is absolutely necessary to assure correct counter-torque transfer between dynamometer chassis and engine stand, for example the engine stand must be firmly bolted to the dynamometer chassis.
Please use suitable shaft (cardan-shaft or CV-shaft) to connect the engine to dynamometer flange.
In some cases it is necessary to use elastic torsion clutch to dampen the engine vibrations.
The dynoKRAFT MPS380 is an bi-directional dynamometer.
You can connect your test engine to any of the two input-flanges - please bare in mind the load cell calibration direction.
Axis center height (above t-slot table level) is 700mm.
It is in the sole responsibility of the dynamometer operator to cover all rotating parts or use other adequate means to prevent accidents.
Setting up your workspace
Please setup your workspace so that at least one emergency stop button is within your range at all times while working with your dynamometer / while sitting in the vehicle.
Connecting to Electric Power Supply and Compressed Air Supply
Please connect a power cable to dynamometer main power inlet “MAINS” using adequate extension cable.
Please make sure to use proper electric power source matched to the electric system of the dynamometer.
If in doubt please check the machine label for information on power system used and consult licensed electrician.
The test bench must be connected to a suitable type B residual current circuit breaker, followed by a three-pole 32A fuse, to the mains.
Warning! Obligatory use of residual current circuit breaker.
A residual current circuit breaker is an obligatory part of the electrical connection of the dynamometer. Failure to comply with this rule can result in severe electric shock or death, e.g. if the insulation is damaged! If the test stand is operated without a residual current circuit breaker, the guarantee expires!
Should your dynamometer be equipped with Air Inlet please connect a suitable compressed air hose to the compressed air inlet adapter. The inlet is a standard 7.4mm workshop quick connector normally found in auto repair shops.
To switch on the dynamometer, please turn the main switch on the side of the switch cabinet to the ON position.
Noise control. Dynamometer room requirements
dynoKRAFT is recommending to setup your dynamometer in noise control room. It is not uncommon, that during combustion engine testing under full load and high RPM the generated noise level is in excess of 120dB
Another important requirement is flammability resistance of your dynamometer room and any equipment you will install inside the room.
The room must also consist of emergency exit wired to the e-stop circuit of your dynamometer. Please consult your local health and safety requirements.
Ensure minimum work space around the dynamometer-test engine setup. dynoKRAFT is recommending a minimum of 2 meters around the dynamometer and engine to allow easy access to all controls and equipment..
Please ensure that there are a sufficient number of suitable fire extinguishers in the dyno room.
If in doubt, speak to your local health and safety requirements authorities or fire department.
Basic dynamometer operation
The dynoKRAFT dynamometer is equipped with various external indicators and controls.
Please refer to table below for their meaning and operation.
|Emergency stop button (yellow-red)||Emergency STOP or emergency OFF button.|
By pressing this button the dynamometer will be switched off (retarder power will be cut off). In addition, the pneumatic brakes (if your test bench is equipped with such) are turned on and the rotating rollers are braked.
The emergency stop button is released by pulling it out.
|"Reset" button (green)||With the reset button, the dynamometer is reset to normal working conditions after the emergency stop procedure.||Once all e-stop buttons are released pressing the “reset” button will enable normal dynamometer operation and release the emergency brake.|
|"E-brake ON" LED (yellow)||This indicator lamp shows that the emergency stop button has been actuated. |
Load Cell calibration
Please follow the steps described in ADAQ Software manual to calibrate the load cell.
Reference load: ~25kg (see supplied calibration weight for exact value or any other weight you use for calibration process).
Torque arm length: 750mm
To install the calibration tool please use the two supplied pins:
E-Stop procedure and reset
The following steps / functions are carried out while the emergency stop button (emergency OFF button) is pressed:
- the test power supply to retarder is switched off
To reset the dynamometer after emergency stop event into normal operation mode please follow these steps:
- Examine the engine and dynamometer and fix any issues with the setup
- Investigate the room for potential hazard
- If you’re not able to identify any potential hazard please release all e-stop buttons and press the “RESET” button
Always investigate if the dynamometer chassis and engine stand are firmly fixed and that all bolts are properly tighten after executing E-stop procedure from RPM in excess of 3000.