Delta Electronics AC Drive VFD-F Series Especificaciones descargar pdf (Pagina 172)

Appendix CHow to Select the Right AC Motor Drive|

Revision May 2008, ME14, SW V3.04 C-7

the AC motor drive operates more than one motor, please pay attention to starting and

changing the motor.

Power Transmission Mechanism

Pay attention to reduced lubrication when operating gear reduction motors, gearboxes, belts

and chains, etc. over longer periods at low speeds. At high speeds of 50/60Hz and above,

lifetime reducing noises and vibrations may occur.

Motor torque

The torque characteristics of a motor operated by an AC motor drive and commercial mains

power are different.

Below you’ll find the torque-speed characteristics of a standard motor (4-pole, 15kW):

AC motor drive Motor

180

155

140

100

320

120

60 seconds

Base freq.: 60Hz

V/F for 220V/60Hz

180

155

100

320

120

torque (%)

Frequency (Hz)

60 seconds

torque (%)

Base freq.: 60Hz

V/F for 220V/60Hz

130

140

100

120

180

150

100

120

torque (%)

torque (

)

60 seconds

Frequency (Hz)

Base freq.: 50Hz

V/F for 220V/50Hz

Base freq.: 50Hz

V/F for 220V/50Hz

1 2 ... 167 168 169 170 171 172 173

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