Lenze DSD Bedienungsanleitung PDF herunterladen (Seite 313)

100

101

Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 313

11 Drive Dimensioning

11.2 Motor selection

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

11.2 Motor selection

The DSD is specifically suitable for the dimensioning of motors on frequency inverters or servo in-

verters. For both combinations the calculations are based on the same model.

11.2.1 Motors for 87-Hz operation

87 Hz operation of standard asynchronous motors is completely integrated in the DSD for all invert-

ers. The advantage of this operating mode is that the motor speed in comparison to 50 Hz operation

is increased by 73 % at the same torque. Therefore also the nominal motor power rating is increased

by 73 %. Thus the motor utilisation is considerably better. For the inverter no savings result from

this.

• The rated speed for 4-pole motors in 87 Hz operation is approx. 2,500 rpm.

• For geared motors it has to be observed that the max. permissible input speed is not exceeded.

• 87 Hz operation is only possible on an inverter, the motor being actuated with 400 V Y / 230 V Δ

in delta connection. The rated V/f point is set to 400 V / 87 Hz.

• Motors which allow for 87-Hz operation are indicated in the motor selection table of DSD with

correspondingly converted data.

• The efficiency of the motor in 87-Hz operation is higher. Thus, compared to 50 Hz, the operation

is more efficient and a smaller frame size is required.

 Tip!

11.2.2 Motors for 120-Hz operation

For applications with frequently alternating speed and low requirements to the dynamics, Lenze of-

fers motors in standard housing optimised for inverter operation.

• Efficiencies as with comparable IE2 motors, partly IE3 motors as well, but with considerably

smaller frame sizes.

• Often a more competitive alternative to servo motors.

1 2 ... 308 309 310 311 312 313 314 315 316 317 318 ... 495 496

Kommentare zu diesen Handbüchern

Keine Kommentare

Lenze DSD Bedienungsanleitung Seite 313

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Software Lenze DSD