ROTRONICS OPERATING PRINCIPLE. ROTRONICS, specialists in engine test beds, offers a range of industrial Eddy current dynamometers.

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Rodger Bishop
6 years ago
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1 Eddy Current Dyno Frein à courant de Foucault Water cooled Eddy current dynamometer A range of products rated from 5 to 3200 kw. 1,2,3 or 4 rotor technology. Full Digital control panel. Extended safeties concept Stand alone solution EddyCurrentDyno_UKP_08_14 /12

2 ROTRONICS, specialists in engine test beds, offers a range of industrial Eddy current dynamometers. ROTRONICS 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 circumferentially 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. 2/12

STANDARD DYNO EQUIPMENT A magneto-resistive probe scanning an indexed (60 tooth) wheel mounted on the engine drive shaft

An engine coupling plate with standardised drillings. (DIN120,DIN150.

A high output unit supplying power to the brake windings.

A shaft guard fixed to the dyno frame encloses the connecting shaft.

Two arms allowing calibration of the torque measurement (calibration weights not supplied).

Alternate lengths are available at extra cost.

3 STANDARD DYNO EQUIPMENT A magneto-resistive probe scanning an indexed (60 tooth) wheel mounted on the engine drive shaft for speed measurement. Thermo-contacts located on the cooling water output to monitor water temperatures. An engine coupling plate with standardised drillings. (DIN120,DIN150...) A frame supporting the dyno body and allowing fixing to the ground. A high output unit supplying power to the brake windings. A pressure controler mounted on the cooling water outlet for lack of flow detection. A shaft guard fixed to the dyno frame encloses the connecting shaft. A load cell with digital signal conditioning unit allowing accurate measurement of the absorbing torque. 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 digital control rack allows operation of the brake and visualisation of rotational speed, braking torque and power, as well as the current settings. 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 An engine starter unit mounted on the brake. Extended safeties (vibration, additional sensors) special frame (custom axis heigth...) /12

4 CONTROLLER SINGLE LOOP 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 RS232 Interface with monitoring PC for communication of all settings and measured values. CONTROLLER DUAL LOOP ENGINE EC DYNO ECU / PEDAL THROTTLE CEA201 or CEA301 POWER UNIT DYNO PUD HYBRID PWM MODBUS HYBRID (option) Speed & Safeties (temp,bearing..) Torque (load cell & torquemeter direct conditioning) MODBUS / ETHERCAT HYBRID (option) E N G I N E D Y N O CP301 DUAL LOOP CONTROL Setup by webserver 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. MODBUS PROFIBUS ETHERCAT HYBRID AUTOMATION KRONOS Visualisation module : - thanks to a large LCD screen you can display/set all needed informations for measurement & control. 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..10V Outputs for speed, torque and of power V Inputs for setpoint external definition (speed, torque, load...) Digital outputs for alarm signals. Setup by webserver /12

5 technical specifications Dyno model power torque max speed inertia axis height kw Nm rpm kgm2 mm E C5S R , E C20S R , E C40S R , E C75S R , E C110S R , E C190S R , E C230DRS , E C230DRT , E C290S R , E C380DRS , E C380DRI , E C380DRT , E C500S R , E C580DRS , E C580DRT , E C870TRS , E C870TRT , E C1000DRT , E C1500TRT , E C2500TRT , E C3200Q RT , The indicated (cooling) water flow corresponds in a 20 rise in water temperature when operating the dyno at maximum power (typically max inlet temp 30 C, Max outlet 50 C) At this flow level there is a 1 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 7010) as standard, other colors available on demand. 5/12

6 TEchnical ChARACTERISTIcs SingleRotor SR Bride d accouplement Engine Coupling Flange (Nb alésage) (Nb holes) CW CCW CW Sens de rotation Rotation Direction Anneau de levage Lifting Capteur Vitesse Pickup Capteur de force Load cell Sortie d eau Water Outlet Entrée d eau Water Inlet Pressostat Differential pressure switch D y n o t y p e A B C D E F G H ø I J ± 2 ø k L M N O P Q R S T U V W X ± 4 Y ± 2 Z a b ø c ( g 6 ) ø d ø e ø f h W e i g h t k g E C S R G ¾ , , M 8 7 4, E C S R G , M E C S R G 1 ¼ , , M , E C S R G 1 ½ , , M E C S R , 5 G , , 5 8 2, M , /12

7 TEchnical ChARACTERISTIcs DoubleRotor DR Bride d accouplement Engine Coupling Flange CCW CW Sens de rotation Rotation Direction Anneau de levage Lifting (Nb alésages) (Nb holes) Capteur Vitesse Pickup Sortie d eau Water Outlet Capteur de force Load cell Pressostat Differential pressure switch Entrée d eau Water Inlet D y n o T y p e A B C D E F G H ø I J ± 2 ø k L M N O P Q R S T U V W X ± 4 Y ± 2 Z a b ø c ( g 6 ) ø d ø e ø f h W e i g h t k g E C D R S G 1 ½ , M E C D R S G , , M , E C D R I G , , M , E C D R S G , , , M E C D R T G 1 ½ , , M , E C D R T G , , , M E C D R T G , , M , E C D R T G 2 ½ , M 1 8 x /12

8 TEchnical ChARACTERISTIcs TripleRotor TR Bride d accouplement Engine Coupling Flange CCW CW Sens de rotation Rotation Direction Anneau de levage Lifting (Nb alésage) (Nb holes) Capteur Vitesse Pickup Sortie d eau Water Outlet Capteur de force Load cell Pressostat Differential pressure switch Entrée d eau Water Inlet D y n o t y p e A B C D E F G H ø I J ± 2 ø k L M N O P Q R S T U V W X ± 4 Y ± 2 Z a b ø c ( g 6 ) ø d ø e ø f h W e i g h t k g???? , , 5 G 2 ½ , , , M , E C T R S G 2 ½ , , , M , E C T R T G 2 ½ , , M , E C T R T G , M 1 8 * 1, / E C T R T , M 2 0 * 2 Ø 2 0

9 TEchnical ChARACTERISTIcs QuadrupleRotor QR (Nb alésages) (Nb holes) Bride d accouplement Engine Coupling Flange CW CCW Sens de rotation Rotation Direction Anneau de levage Lifting Sortie d eau Water Outlet Capteur Vitesse Pickup Capteur de force Load cell Pressostat Differential pressure switch Entrée d eau Water Inlet D y n o t y p e A B C D E F G H ø I J ± 2 ø k L M N O P Q R S T U V W X ± 4 Y ± 2 Z a b ø c ( g 6 ) ø d ø e ø f h W e i g h t k g E C Q R T , M 2 0 * 2 Ø 2 0 /12

SHAFT GUARD DETAILS L B A C = = = D = The dimension

deliver on demand some starter for your R&D or

The electrical motor torque and speed can be adjusted

SHAFT DETAILS Depending on your application we can

shaft from high speed very light transmission to the

It includes cardan shaft as well as elastic

10 SHAFT GUARD DETAILS L B A C = = = D = The dimension «L» can be the standard length or can be modified on demand. ENGINE STARTER 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 DETAILS Depending 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 CEA201 durability throttle actuator with a 1s stroke or advanced dynamic CEA301with stroke below 0.1s.Link to the PGB control rack is digital for better control. 10/12

11 operating limits Power hp Torque mdan B C Torque A A B Power C D D E E Engine speed rpm 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. 11/12

12 DYNO PERFORMANCES EC870TRT EC870TRS EC580 DRS EC500SR EC380DRI EC230DRT EC380DRS EC110SR EC75SR EC580DRT EC290SR EC380DRT EC190SR EC40SR EC20SR EC5SR DYNOSENS 39, impasse de l étang. Z.I. des Dragiez LA ROCHE SUR FORON - FRANCE contact@rotronics.com 12/12 Phone : + 33 (0) Fax :+ 33 (0)

NR ROTARY RING TABLE: FLEXIBLE IN EVERY RESPECT

NR FREELY PROGRAMMABLE ROTARY TABLES NR ROTARY RING TABLE All NR rings allow customer-specific drive motors to be connected NR ROTARY RING TABLE: FLEXIBLE IN EVERY RESPECT WHEN IT S GOT TO BE EXACT We