These two values are determined by the application (see calculation example on pages 52-53).

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Douglas Morton
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1 Tension brake sizing Two important parameters are used in brake selecting: Max. torque requirement Max. thermal power to be dissipated These two values are determined by the application (see calculation example on pages 52-5). LCTROMGNTIC R TYP T SLCTION T brake selection is based on two values : Max torque need (Nm) on the brake *Max brake rotation speed for the max torque (rpm) * s the curve given for T selection takes the power dissipation into account, this value is used. T max T max = torque needed at the brake for the max tension in material and the max roll diameter - taking any gear ratios into account. Selection point N max = brake rotation speed for the max linear speed and the max roll diameter taking any gear ratios into account. N max Note : the constant tension in the web gives a constant power on the brake. However, we make the selection for the max torque (then at full roll diameter) because it s the moment where the brake has the least natural cooling. Gear box Speed rake Torque 27

2 T brake selection The table (pictured below left) illustrates the selection of the correct T brake. The table on the right determines the maximum torque provided by the brake when nominal voltage is applied. fter selection you can consult the complete brake characteristics and dimensions on pages 0 to 1. Dynamic braking torque T170 - T25 Maximum braking torque (emergency stop) T170 - T Torque M d [Nm] T 00 T 25 T 500 T 25 T1225 rake torque M [Nm] T 25 T 1225 T 00 T 25 T 500 T 25 T ,5 1 0, T 5 2 T 0, 0, 0, T , T 170 0, rake n (rpm) 0, rake n (rpm) 2

3 T brake characteristics T units are assembled using various parts described below. Main components of the brake are armature and magnet. dditional parts are offered to provide for ease of mounting. Part T170 T T25 Part T500 D = mm D = 9 mm D = 111 mm 1 rmature hub* rmature Magnet 2V R = 1 Ω, C R = 0 Ω, C R = 7 Ω, C Terminals Wires * Prebored ** Indicate bore and keyway D = 10 mm 1 Taperlock bushing** 10-xxxx-xxxx 2 rmature hub rmature Drive pins x 5 Magnet IM 2V Terminals Magnet OM 2V Conduit box Part T25 T00 T1225 T25 D = 2 mm D = 259 mm D = 1 mm D = 95 mm 1 Taperlock bushing** 10-xxxx-xxxx 10-xxxx-xxxx 10-xxxx-xxxx 10-xxxx-xxxx 2 rmature hub rmature Drive pins x x x x Magnet IM 2V R = Ω, C R = Ω, C R = 22 Ω, C R = Ω, C 5-1 Terminals Magnet OM 2V Conduit box

4 øg øq T brake characteristics ll T brakes are rated at 2 VDC nominal. When selection is correct the voltage on the brake should be approximately 12 VDC for your maximum parameters used in calculation. ll T brakes are able to work for short periods of time (less than seconds) in the 12-2 VDC range, for example in machine deceleration or in emergency stop. Technical data and dimensions T170, T, T25 T500 IM T25 IM, T00 IM, T1225 IM 1, C øh øs øm,2 øg øn øp øh øm 2, øg øn,2 øp øs øq øs øq,0 0, ø9,52 ±0,025 1,2 T F C T500 OM T25 OM, T00 OM, T1225 OM Size T170 T T25 T500 T25 T00 T1225 T25 M d [Nm] 0, 1, M d min [Nm] 0 0,0 0,1 0,2 0,5 1,1 2 n max [rpm] I 2V = [] 0,22 0,0 0,2 1,0 1,177 1,22 1,07 1,212 P* Continu [kw] 0,0 0,00 0,00 0,0 0,0 0,0 0,5 0, P* lternativ [kw] 0,022 0,05 0,0 0,10 0,0 0,50 0,950 1,50 R C [Ω] ,, 19, 22, 19, t b [s] 0,0 0,00 0,00 0,052 0,112 0,2 0,290 0, Inertia [kgm 2 ] , - 1,9-0,022 0,01 0,095 0,21 Mass [kg] 0,10 0,50 1,00 2,, ,5 [mm] 0,5, [mm] ,5 0,5 0,5 0,5 C [mm] ,5 2 5 [mm] [mm], 2 0,5 0,5,5,5 1,5,5 * lternativ duty based on 0 minutes ON and 0 minutes OFF. 0

5 T brake characteristics T25 IM T /2-1 UNC- ø12, øm øh 2, øg øn øp,5 0 9,5 M øu Steel < 0,2 % C C ø12, Non magnetic Size T170 T T25 T500 T25 T00 T1225 T25 F [mm] , øg [mm] 19,5 +0, øh [mm],9 0,1 1, ,5 * [mm], 17,5 22,2,5 7 7 max [mm] øm ±0,025 [mm] ,2 90,9 1, 19, 2, øn ±0,05 [mm] ,0,9 1,55 11,95 22,0 øp (for screw) [mm] , 5, 1,1 27, M M M M 12 M øq -0,05 [mm] 1,9,9 12,7 15, 27, øs (for screw) [mm] 5 79, ,2 255, M M M M M T [mm] øu [mm] * Reverse mounting of taperlock bushing is possible 1

Tension brake for strapping machine Specially designed for strapping machine, the electromagnetic brake TM is adjustable for the different kind of plastic film.

6 Tension brake for strapping machine Specially designed for strapping machine, the electromagnetic brake TM is adjustable for the different kind of plastic film. Mounted on the intermediate roller, it will tighten the plastic film and will permit a perfect strapping. TM R PLLT PLSTIC FILM ROLLR TM SIZ Heat dissipation torque rake torque M d (Nm) n (rpm) M d (Nm) n (rpm) 2

7 Tension brake for strapping machine TM SIZ ➁ VR 0 T ➀ ➂ ø 5.5 ø 1 D H ø 2 ø 90 ø 0 h9 P9.5 2 D min = mm with standard keyway D min = 1 mm with standard keyway VR 0 pins on ø 57.9 ø 0, 7.9 H. ➃ T ➀ ø 1 U max : 2 VDC - P C =, Watts 2 eway according to : ISO R77 / S 25 / NF / tolerance P9 Part TM TILL 1 Inductor 2VDC rmature VR Hub prebored ø7, Hub ø12 H + eyway P rmature VR

Tutorial 1 - Drive fundamentals and DC motor characteristics

Tutorial 1 - Drive fundamentals and DC motor characteristics University of New South Wales School of Electrical Engineering & elecommunications ELEC4613 ELECRIC DRIVE SYSEMS utorial 1 - Drive fundamentals and DC motor characteristics 1. In the hoist drive system