TM 5-3895-374-24-1OptionsBraking power calculation- High inertia machine, non-driving loadBraking torque on deceleration Cb = J Dw N m,DtJ :total moment of inertia referred to the motor shaft in kg ^{m2,}Dw: speed difference in rad/s,Dt: deceleration time in secondsInstantaneous braking power Pb= Cb w in WAverage braking power during deceleration Pbd = 0,5 Cb Dw in WAverage braking power during one cycle Pbm = Pbd t in WTt braking time in s, T. time of one cycle in sspeed- Driving load, continuous operation of unspecified durationBraking is treated as continuous braking Pb = Pbm = Cb w in W,Cb braking torque in N m,wspeed in rad/sCAUTION whatever the application, the instantaneous braking power necessary must be <1,5 the rated power of the speed controllerBraking resistance selectionThe braking resistance is defined by its ohmic value and power dissipation capacityOhmic value of the resistanceReference ATV-452U40S075(M)(N)U55(N)U40MD18NU55M015MD55D75N075U15(N)U75(N)(S)D15(N)D22(N)U75M037D90ND90U22(M)(N)D11(N)D30SD30(N)D11MD55NU30D15SD37NU40(N)D55SMinimum value10047272215108754of the resistance (W)Power of the resistancerated Pn power that can be dissipated continuously, it must be greater than the average brakingpower Pbm,- maximum Pmax power that can be dissipated over a short period on intermittent duty, it mustbe greater than braking power Pb(page 3-215)

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