5-42
For single-phase 100 V class series
Outputting the output current to analog output terminal [FMA] as analog output
voltage (F31 = 2)
The analog output terminal [FMA] outputs 10 V, that is, 200% of the reference
current
I
ref
(A), supposing the output gain (specified by F30) as 100%. Therefore, to
adjust the output voltage, you need to set the output gain at terminal [FMA] (F30)
based on the conversion result obtained by the following expression:
Conversion formula 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
=
gain
Output
ref
I
I
I
ref
(A): Reference current (A)
The reference current is given in the table for F20 to F22.
According to the conversion result, the output voltage to terminal [FMA] can be
calculated as shown below.
(V)
10
100
(F30)
gain
Output
(A)
2
(A)
=
(V)
voltage
output
Analog
ref
I
I
(Example) Outputting analog voltage 8V for 1 HP standard motors when the
inverter output current is 4.2A
190.4
100
(V)
10
(V)
8
(A)
4.2
(A)
5.0
2
=
gain
Output
7.98
(V)
10
100
190
(A)
5.0
2
(A)
4.2
=
(V)
voltage
output
Analog
Reference table
To output analog 10 V at 200% of the rated current of any of the single-phase 100 V
class series of inverters, set the output gain at terminal [FMA] (F30) as listed below.
Nominal applied motor (HP)
1/8
1/4
1/2
1
Output gain to be set to F30 (%)
114
107
120
119