FLENDER Standard Couplings - DS TECH

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FLENDER Standard Couplings Fluid Couplings — FLUDEX Series General information © Siemens AG 2011 6 mm stroke 13 21 L1 F ON S1 G_MD10_EN_00110 K1 18 8 52 20 OFF S2 22 14 EOC system 22 Code number 11 DIN EN 50013 Snap-action contact Limit switches Motor contactor On the EOC system the temperature-dependent magnitude of the magnetic field of the EOC transmitter is measured and used for a switching pulse. The transmitter signal is transmitted via the fixed sensor to the evaluation instrument and there compared with the set value. If the signal does not exceed the minimum value or no signal is received, the relay of the evaluation instrument switches over. This can cause a malfunction message to be sent and the motor cut out. The coupling housing remains closed. The fusible safety plug with a higher response temperature remains in the coupling for additional safety. The response temperature of the EOC system is 125 °C. K1 Wiring proposal H1 G_MD10_EN_00109a 48 PG 13.5 Switchgear: FFA:000000652020 Evaluation instrument R 70 2 1. 70 FLUDEX SW 24 M18 x 1 44 Ø9 G_MD10_EN_00111a 124 Transmitter Sensor Bracket (not part of scope of supply) (450) 655-7447 info@pt-dstech.com www.dstech.ca Radius of travel R to the transmitter Size 297 342 370 395 425 450 490 516 565 590 655 755 887 R in mm 188 215 226 239 251 271 292 307 330 346 383 435 507 Wiring proposal 13 Components of the EOC system Component EOC transmitter with seal Sensor EOC Evaluation instrument EWD Product code FFA:000001194899 FFA:000000361460 FFA:000001205294 L1 -F1 1 2 -S1 11 12 -U1 5 4 3 -F2 1.21 1.22 -S2 11 12 3 -S2 13 21 -K2 23 14 22 2 24 -U1 5 4 4 B1 F1 F2 H1 K1 K2 K3 S1 S2 S3 U1 -K2 33 2 34 Sensor Fuse Motor protection switch Fault Motor contactor Contactor relay Contactor relay Emergency OFF Motor OFF Motor ON Evaluation instrument -K3 13 3 14 11 -K2 43 2 44 1 13 14 15 16 -U1 2 3 5 6 8 3 4 5 7 8 2 12 9- 10+ 1275 Newton, local 15 Boucherville, Qc, Canada, J4B 5H2 -K2 13 2 14 -K3 21 3 22 -S3 21 2 22 -K1 N A1 A2 -K2 A1 A2 -K3 A1 A2 -H1 31 32 -B1 -BU +BN NAMUR 1 3 5 2 4 6 2 13 14 3 23 24 3 33 34 5 43 44 4 13 14 2 21 22 31 32 43 44 G_MD10_EN_00112 13/4 Siemens MD 10.1 · 2011
© Siemens AG 2011 FLENDER Standard Couplings Fluid Couplings — FLUDEX Series General information ■ Function Föttinger principle Fluid coupling Pump impeller Turbine impeller Cu2 Cu1 Motor Driven R1 R2 machine Pump Turbine G_MD10_EN_00113 Two opposing, radially bladed impellers are housed in a leakproof housing. The impellers are not mechanically connected to each other. Because of the axially parallel arranged blades, the torque is transmitted independently of the direction of rotation and solely by the oil filling. A low-viscosity mineral oil VG 22/VG 32, which also serves to lubricate the bearings, is used as fluid. In special types water, a water emulsion or low-flammability fluid may be used as a noncombustible fluid. 1275 Newton, local 15 Boucherville, Qc, Canada, J4B 5H2 (450) 655-7447 info@pt-dstech.com www.dstech.ca Hydrodynamic couplings have the characteristic properties of fluid flow engines. The transmissible torque depends on the density and quantity of the operating fluid and increases as the square of the drive speed and the fifth power of the profile diameter denoting the coupling size. In the driven pump impeller, mechanical energy is converted into kinetic flow energy of the operating fluid. In the turbine impeller, which is connected to the output side, flow energy is converted back to mechanical energy. To generate the operating fluid circulation necessary for torque transmission, a difference in speed is necessary between the pump and turbine impellers. A centrifugal force pressure field is set up that is greater in the faster rotating pump impeller than in the turbine impeller. The difference in speed, usually termed “slip”, at the continuous operating point of the coupling is between 2 % and 6 %, depending on application and coupling size. Immediately after drive motor start-up slip is 100 %, i.e. the pump impeller is driven at the speed of the motor, but the turbine impeller remains stationary. Slip multiplied by the transmitted power represents the power loss of the coupling, which is converted into heat inside the oil filling. The amount of heat generated must be released into the environment via the coupling housing to prevent an impermissible temperature rise. The rated coupling output is mainly determined by the power loss which can be dissipated at a still acceptable operating temperature or a reasonable set slip limit. This distinguishes the FLUDEX coupling from all positively acting coupling assembly options for which the rated coupling torque is the defining characteristic. Depending on the FLUDEX coupling series, drive is via the inner rotor (shaft/hollow shaft with rigidly connected blade wheel) or via the bladed housing impeller (blade wheel housing). The driving impeller is the pump impeller, and the driven impeller is the turbine impeller. Torque 0 0 100% FG = 80% FG = 75% FG = 70% FG = 65% FG = 60% FG = 55% Speed n2 Slip 50% 10% 0% Slip-torque characteristics for different filling levels FG G_MD10_EN_00114 SN S N S N n2 = n 1 The torque characteristic depends on the oil filling quantity FG in the coupling. This enables the transmissible torque on starting up to be set via the filling level. With a higher filling level the starting torque increases, while the operating slip and thus the coupling temperature rise decreases. Conversely, with a lower filling level the starting torque decreases, the coupling becomes softer, while slip and coupling temperature rise. T N 13 Siemens MD 10.1 · 2011 13/5
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Appendix © Siemens AG 2011 15 15/2
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FLENDER Standard Couplings - DS TECH

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