5-26
For three-phase 200V and single-phase 200V series of inverters
Outputting the output current in an analogue format (FMA) (F31 = 2)
The analogue output terminal [FMA] outputs 10 V, that is, 200% of the
reference current
Iref (A), supposing the output gain selected with F30 as
100%. For three-phase 200V and single-phase 200V series, therefore,
you need to set the output gain (F30) based on the conversion result ob-
tained by the following expression:
z Conversion expression for calculating the output gain which is required
for outputting the voltage V (V) via terminal [FMA] when current
I (A)
flows across the inverter
100
(V)10
(V)V
(A)
(A)
2=gainOutput
ref
uuu
I
I
Iref (A): Reference current (A)
The reference current is given in the table for F20 to F22 on page
5-24.
According to the conversion result, the output voltage to terminal [FMA]
can be calculated as shown below.
(V)10
100
(F30)gainOutput
(A)2
(A)
=(V)voltageoutputAnalogue uu
u
refI
I
(Example) Outputting analogue voltage 8V for 0.75 kW standard motors
when the inverter output current is 4.2A
190.4100
(V)10
(V)8
(A)4.2
(A)5.0
2=gainOutput uuu
7.98(V)10
100
190
(A)5.02
(A)4.2
=(V)voltageoutputAnalog uu
u
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