TM 5-3895-374-24-1Recommendations for useof the motor/speed controller combinationAdaptation to theThe motor/speed controller combination must be adequately rated tomotor load- overcome the load torque of the motor load over the whole speed range used,- supply the transient overtorque needed for the required accelerations, see curves p 31If braking is required for rapid deceleration, refer to the following possibilities-DC injection braking (p 25),- slow-down braking (p 62)Precautions to be taken according to the type of machine load- constant torque load (conveyors)ensure that the starting torque is compatible with the available overtorque,-quadratic torque load (fans and centrifugal pumps)adjust the U/f ratio (p 48) and override the slip compensation (p 45),the torque increases rapidly with the speed, and it may be necessary to limit the maximumspeed so that the motor/speed controller combination’s capabilities are not exceeded,- constant power load (winders)check the speed range,If torque is highest at low speed, check the torque capability at the lowest speed, provideforced ventilation if necessary,- driving load/high inertia examine the braking possibilities (p 62), and use if neededparticular adjustments (p 81),- machines with fast cycles :refer to part 2 of this document "Special applications" (p 81)Adaptation to theIf a suitable mains supply is not available, the controller can be supplied via a three phasemains supplytransformer or autotransformer, rated as followsATV-452075 (M) (N)1,5 kVAATV-452D15 (M) (N) (S)22 kVAATV-452U15 (N)3 kVAATV-452D18N28 kVAATV-452U22 (M) (N)4 kVAATV-452D22 (N)32 kVAATV-452U305,5 kVAATV-452D30 (N) (S)45 kVAATV-452U40 (M) (N) (S)7 kVAATV-452D37 (N)52 kVAATV-452U55 (M) (N)9 kVAATV-452D55 (N) (S)75 kVAATV-452U75 (M) (N) (S)12 kVAATV-452D75 (N)100 kVAATV-452D11 (M) (N)16 kVAATV-452D90 (N)125 kVA.(page 3-186

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