eddy current dyno - rotronicsrotronics.com/en/wp-content/uploads/2015/04/eddycurrentbrake_ukp... ·...
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Eddy Current DynoFrein à courant de Foucault
Water cooled Eddy current dynamometerA range of products rated from 5 to 3200 kw.
1,2,3 or 4 rotor technology.Full Digital control panel. Extended safeties conceptStand alone solution
EddyCurrentDyno_UKP_08_14
2/�2
ROTRONICS
ROTRONICS, specialists in engine test beds, offers a range of industrial Eddy current dynamometers.
OPERATING PRINCIPLE
`The brake allows application of a load to an engine undergoing dynamometer testing for measurement of its speed and torque.The brake essentially comprises a rotor and a stator.The stator is mounted on the chassis and circumferential ly retained. Rotational force acting upon it is measured by a load cell. The stator also incorporates electrical windings and ducts for water cooling.The rotor turns inside the stator where it is subjected to a magnetic field generated by the electrical windings. When the rotor turns, it cross the lines of force and induces Eddy currents. These currents generate forces which oppose the movement that gave rise to them. The force of the engine is then transmitted to the stator, and measured by the load cell. Knowing the magnitude of the lever arm and the rotational speed, the engine’s torque can therefore be measured.
The mechanical energy absorbed by the brake is transformed into heat. The heat is removed by cooling water circulated through ducts within the stator. The cooling circuit is dimensioned in order to dissipate the heat energy produced when the dynamometer is running at its maximum power rating.
The speed of rotation is measured by a magneto-resistive sensor in association with an indexed wheel.
�/�2
STANDARD DYNO EQUIPMENT
• A frame supporting the dyno body and allowing fixing to the ground.
• An engine coupling plate with standardised drillings.(DIN�20,DIN�50...)
• A magneto-resistive probe scanning an indexed (60 tooth) wheel mounted on the engine drive shaft for speed measurement.
• A pressure controler mounted on the cooling water outlet for lack of flow detection.
• A high output unit supplying power to the brake windings.
• Thermo-contacts located on the cooling water output to monitor water temperatures.
• A “double output” (additional engine coupling plate at the other end of the dyno shaft) is available across the model range. This allows the addition of a starter or the mounting of two engines, one at either side of the dyno.
OPTIONAL EQUIPMENT
• A digital control rack allows operation of the brake and visualisation of rotational speed, braking torque and power, as well as the current settings.
• A shaft guard fixed to the dyno frame encloses the connecting shaft.
• Two arms allowing calibration of the torque measurement (calibration weights not supplied).
• 8m of cable with connectors for connections between the dynamometer control cabinet and the control rack. Alternate lengths are available at extra cost.
• A load cell with digital signal conditioning unit allowing accurate measurement of the absorbing torque.
• An engine starter unit mounted on the brake. • Extended safeties (vibration, additional sensors) • special frame (custom axis heigth....)
�/�2
Description:As standard, the brakes is delivered with the single loop RRN104 Rack control unit.Its twin processor digital technology allows simultaneous management of the brake, its configuration (fast and accurate) and the real time conditioning & display of data being measured : speed, torque, power, load, settings and alarm status.
Available operating modes :- constant speed.(n=K)- constant torque.(M=K)- Manual load setting.(M) (open loop).- Load as a function of speed squared. (Mn²)Available inputs / outputs :hybrid link to any automation software & dyno RS2�2 Interface with monitoring PC for communication of all settings and measured values.
CONTROLLER SINGLE LOOP
Description:As an option the dyno package can be delivered with a state of the art GIB301 Dual loop digital control rack.It allows simultaneous control of both dyno & throttle actuator.
Visualisation module :- thanks to a large LCD screen you can display/set all needed informations for measurement & control.
CONTROLLER DUAL LOOP
ECD
YNO
ENG
INE
ECU / PEDAL
THROTTLECEA201 or CEA301
CP301
DUALLOOP
CONTROL
Setup bywebserverPOWER UNIT
DYNOPUD
Speed & Safeties (temp,bearing..)Torque (load cell & torquemeter direct conditioning)
ENGINE
DYNO
MODBUS / ETHERCATHYBRID (option)
MODBUSHYBRID (option)
HYBRIDPWM
AUTOMATIONKRONOS
MODBUS ETHERCATPROFIBUS HYBRID
Native digital conditioning:- speed and torque are directly conditioned by the rack (including torquemeter), accuracy and
resolution is maximized. Available operating modes :- several control modes (N/%, N/X,RLS ..) covering all kinds of application from engine test bed to tandem dyno.Available hybrid options :0..�0V Outputs for speed, torque and of power.0..�0V Inputs for setpoint external definition (speed, torque, load...) Digital outputs for alarm signals. Setup by webserver
5/�2
TEChNICAL SPECIfICATIONS
The indicated (cooling) water flow corresponds in a 20° rise in water temperature when operating the dyno at maximum power (typically max inlet temp �0°C, Max outlet 50°C) At this flow level there is a � Bar pressure drop across the dyno.
The dyno’s high speed bearings are oil lubricated.
Direction of rotation : reversible
Design of the cooling water input and output allows easy connection to the cooling water circuit (not supplied). The brake cooling circuit is completely watertight and operates under pressure. The cooling water circuit has no effect on brake hysteresis , which remains well with the stated accuracy.
Color : Blue (RAL 70�0) as standard, other colors available on demand.
Dyno model power torque max speed inertia axis height TYPEkW Nm rpm kgm2 mm
E C5S R 5 17 15000 0,002 647 S RE C20S R 20 120 15000 0,020 647 S RE C40S R 40 150 15000 0,020 647 S RE C75S R 75 450 13000 0,050 647 S RE C110S R 110 450 13000 0,050 647 S RE C190S R 190 800 12000 0,150 647 S RE C230DRS 230 500 13000 0,100 647 DRSE C230DRT 230 900 12000 0,100 647 DRTE C290S R 290 2000 9000 0,600 662 S RE C380DRS 380 800 12000 0,290 662 DRSE C380DRI 380 600 12000 0,100 662 DRIE C380DRT 380 1600 9000 0,300 662 DRTE C500S R 500 3500 5500 3,000 700 S RE C580DRS 580 1800 9000 0,900 700 DRSE C580DRT 580 4000 7000 1,100 700 DRTE C870TRS 870 2000 9000 1,500 700 TRSE C870TRT 870 6000 6500 1,700 700 TRTE C1000DRT 1000 7000 3500 5,500 800 DRTE C1500TRT 1500 10500 3500 8,100 800 TRTE C2500TRT 2500 15000 3500 23,000 1000 TRTE C3200Q RT 3200 20000 2500 33,600 1000 Q RT
6/�2
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�0/�2
Thanks to the dual output dyno we can deliver on demand some starter for your R&D or production test bed. The electrical motor torque and speed can be adjusted to your specifications.
ShAfT GUARD DETAILS
The dimension «L» can be the standard length or can be modified on demand.
D=
=
= =
CL
B A
ENGINE STARTER
ShAfT DETAILSDepending on your application we can help you to define and deliver the right transmission shaft from high speed very light transmission to the heavy duty application. It includes cardan shaft as well as elastic transmission with dampers.
ThROTTLE ACTUATOR We can offer CEA20� durability throttle actuator with a �s stroke or advanced dynamic CEA�0�with stroke below 0.�s.Link to the PGB control rack is digital for better control.
��/�2
OPERATING LIMITS
The operating limits are represented by the straight lines of a log-log graph. The representative segments are the following :
A : Maximum power at low speed, deduced from the maximum excitation current applied to the brake. B : Maximum brake torque deduced from the maximum mechanical capacity of the brake elements.C : Maximum brake power rating, deduced from the water cooling capacity.
D : Maximum brake speed, determined from the mechanical performance of loaded bearings.
E : Minimum applied power. Minimum power necessary in order to overcome the internal resistance of the brake.
N.B : For maximum brake durability the user is advised to remain always within these given operating limits.
Power hp �Torque mdaN
Engine speed rpm
Power
Torque
A
B
B
C
C
D
D
EE
A
�2/�2
DYNO PERfORMANCES
http://www.rotronics.com email : [email protected]
Phone : + �� (0)�50 0�0 85� Fax :+ �� (0)�50 0�0 5�7
DYNOSENS ��, impasse de l’étang. Z.I. des Dragiez 7�800 LA ROCHE SUR FORON - FRANCE
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