• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Operation at constant torque in overspeed
Line inductances

TM-5-3895-374-24-1 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
Page Navigation
  168    169    170    171    172  173  174    175    176    177    178  
TM 5-3895-374-24-1 Recommendations for use of the motor/speed controller combination Adaptation to the The motor/speed controller combination must be adequately rated to motor 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 31 If 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 maximum speed 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, provide forced ventilation if necessary, - driving load/high inertia examine the braking possibilities (p 62), and use if needed particular adjustments (p 81), - machines with fast cycles : refer to part 2 of this document "Special applications" (p 81) Adaptation to the If a suitable mains supply is not available, the controller can be supplied via a three phase mains supply transformer or autotransformer, rated as follows ATV-452075 (M) (N) 1,5 kVA ATV-452D15 (M) (N) (S) 22 kVA ATV-452U15 (N) 3 kVA ATV-452D18N 28 kVA ATV-452U22 (M) (N) 4 kVA ATV-452D22 (N) 32 kVA ATV-452U30 5,5 kVA ATV-452D30 (N) (S) 45 kVA ATV-452U40 (M) (N) (S) 7 kVA ATV-452D37 (N) 52 kVA ATV-452U55 (M) (N) 9 kVA ATV-452D55 (N) (S) 75 kVA ATV-452U75 (M) (N) (S) 12 kVA ATV-452D75 (N) 100 kVA ATV-452D11 (M) (N) 16 kVA ATV-452D90 (N) 125 kVA. (page 3-186







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.