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(G) Control parameters
Parameters
5 - 520
Application for variable-torque load (Pr. 14 = "1", initial value)
●
The output voltage will change in square curve against the output frequency at the base frequen-
cy or lower. (1.75th-power curve for FR-F820-01540(37K) or higher, and FR-F840-00770(37K) or
higher.)
●
Set this parameter when driving a load with load torque change proportionally against the square
of the rotation speed, such as fan and pump.
Fig. 5-249:
Variable-torque load
I002751E
NOTE
Pr. 14 will become enabled at the time of V/F control.
Parameters referred to
Pr. 0
Torque boost
=>
Pr. 3
Base frequency
=>
Pr. 178 to Pr. 182
(input terminal function selection)
=>
100%
Output frequency (Hz)
Pr. 3 Base frequency
Ou
tp
u
t v
o
lt
a
g
e
Содержание FR-F800
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Страница 28: ...Related manuals Introduction 1 8 ...
Страница 104: ...Connection of stand alone option units Installation and wiring 2 76 ...
Страница 162: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Страница 720: ...Checking parameters changed from their initial values Initial value change list Parameters 5 558 ...
Страница 780: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
Страница 806: ...Outline dimension drawings Specifications 8 26 ...
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