B-4
Application Notes
of FLA for 60 seconds. These values assume the drive is operating above
[Motor OL Hertz], and that [Motor OL Factor] is set to 1.00.
Operation below 100% current causes the temperature calculation to
account for motor cooling.
[Motor OL Hertz] defines the frequency where motor overload capacity
derate should begin. The motor overload capacity is reduced when
operating below [Motor OL Hertz]. For all settings of [Motor OL Hertz]
other than zero, the overload capacity is reduced to 70% at an output
frequency of zero.
Motor Overload Curve
100
125
150
175
200
225
250
Full Load Amps (%)
Tr
ip Time
(Sec)
Cold
Hot
10
100
1000
10000
100000
Changing Overload Hz
0
10
20
30
40
50
60
70
80
90 100
% of Base Speed
Contin
uous Rating
OL Hz = 10
OL Hz = 25
OL Hz = 50
0
20
40
60
80
100
120
Содержание powerflex 700h
Страница 1: ...PROGRAMMING MANUAL High Power Firmware Versions x xxx 3 001 PowerFlex 700H AC Drives ...
Страница 10: ...P 4 Overview Notes ...
Страница 56: ...2 42 Programming and Parameters Notes ...
Страница 70: ...3 14 Troubleshooting Notes ...
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