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For three-phase 200 V and single-phase 200 V/100 V series of inverters
Outputting the output current in an analog format (FMA) (F31 = 2)
The analog output terminal [FMA] outputs 10 V, that is, 200% of the ref-
erence current I
(A), supposing the output gain selected with F30 as
ref
100%. For three-phase 200V and single-phase 200 V/100 V series,
therefore, you need to set the output gain (F30) based on the conversion
result obtained by the following expression:
Conversion expression for calculating the output gain which is re-
quired for outputting the voltage V (V) via terminal [FMA] when current
I (A) flows across the inverter
I
ref
⌠
Output
gain
=
2
I
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.
Analog
output
voltage
(Example) Outputting analog voltage 8V for 0.75 kW standard motors
when the inverter output current is 4.2A
⌠
Output
gain
=
2
Analog
output
voltage
Reference table
If you want to output analog 10 V at 200% of the rated current of any of
the single-phase 100 V series of inverters, set the output gain (F30) as
listed below.
Applicable motor rating (kW)
Output gain to be set to F30 (%)
5-26
(A)
V
(V)
⌠
⌠
100
(A)
10
(V)
I
ref
I
(A)
Output
⌠
(V)
=
⌠
I
2
(A)
ref
5.0
(A)
8
(V)
⌠
⌠
Ζ
100
4.2
(A)
10
(V)
4.2
(A)
⌠
(V)
=
⌠
2
5.0
(A)
0.1
114
(A): Reference current (A)
gain
(F30)
⌠
10
(V)
100
190.4
190
⌠
Ζ
10
(V)
7.98
100
0.2
0.4
0.75
107
120
119
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