Delta Electronics Elevator Drive VFD-VL, Руководство пользователя

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Appendix C How to Select the Right AC Motor Drive
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Revision Nov. 2008, VLE1, SW V1.03 C-7
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
80
55
38
0320 60
120
60 seconds
continuous
Base freq.: 60Hz
V/f for 220V/60Hz
180
155
100
55
38
0320 60
120
to
rq
ue
(
%
)
Frequency (Hz) Frequency (Hz)
60 seconds
60 seconds
continuous
to
rq
u
e (
%
)
Base freq.: 60Hz
V/f for 220V/60Hz
130
140
100
85
45
35
0320 50
120
180
150
100
45
35
0
50 120
68
80
to
rq
u
e (%
)
to
rq
ue
(
%
)
60 seconds
60 seconds
continuous continuous
Frequency (Hz)
Frequency (Hz)
3 20
Base freq.: 50Hz
V/f for 220V/50Hz
Base freq.: 50Hz
V/f for 220V/50Hz