Mitsubishi Electric FR-A700 Technical Manual page 50

1.4.6 Relationships between frequency setting input signals and output frequencies
(10, 10E*, 2, 5, 1*, 6*, 4, AU)
The analog frequency setting input signals that may be
entered are voltage and current signals.
For the relationships between the frequency setting input
voltages (currents) and output frequencies, refer to the
following diagram. The frequency setting input signals are
proportional to the output frequencies. Note that when the
input signal is less than the starting frequency, the output
frequency of the inverter is 0Hz.
If the input signal of 5VDC (or 10V, 20mA) or higher is
entered, the output frequency does not exceed the
maximum output frequency.
10E
10
3
Frequency
2 2
setting
potentiometer
1
1/2W1k
1
(+)
Auxiliary
( - )
input
4
(+)
Terminal 4
input
( - )
5
Analog Input Block Diagram
A700 F700
Frequency at 5V
input (or 10V, 20mA)
(1 to 400Hz)
Maximum
frequency limit
Input voltage
(0 to 400Hz)
is proportional
to output
Minimum
frequency.
frequency limit
(0 to 120Hz)
Starting frequency
(0 to 60Hz)
0.5
0
Frequency setting signal
Relationships between Frequency Setting Inputs
and Output Frequencies
common
(common
(*Terminal 6 is available only in the
10VDC
5VDC
gain
bias
[Pr. 125(903)]
[Pr. 126(905)]
[Pr. 1]
[Pr. 18]
[Pr. 2]
[Pr.13]
5V [Pr. 73]
(10V)
(20mA)
)
(* do not have terminal 10E nor terminal 1.)
E700 D700
(1) Voltage input (10, 10E*, 2, 6*, 4, 5)
(*
E700 D700
(*Terminal 6 is available only in the
A7AZ.)
Enter the frequency setting input signal of 0 to 5VDC
(or 0 to 10VDC) across terminals 2 (or 4)-5. The
maximum output frequency is reached when 5V
(10V) is input across terminals 2 (or 4)-5. When using
with FR-A7AZ, terminal 6 is available for
A700
frequency setting input.
The power supply used may either be the inverter's
built-in power supply or an external power supply.
The internal power supply outputs 5VDC across
terminals 10-5, or 10V across terminals 10E-5.
For operation at 0 to 5VDC, set [Pr. 73 Analog input
selection] to 0 to 5VDC input. Use terminal 10 for
the built-in power supply.
0 to 5V
DC
For operation at 0 to 10VDC, set [Pr. 73] to 0 to
10VDC input. Use terminal 10E for the built-in
power supply.
0 to 10V
DC
(2) Current input selection (2*, 4, 5, AU)
common
(*Current input with terminal 2 is not available for
)
E700 D700
To automatically perform operation under constant
pressure or temperature control using a fan, pump
etc., enter the controller output signal of 4 to
20mADC across terminals 4 (or 2)-5.
AU signal must be turned ON to use terminal 4.
When the multi-speed signal is input, the current
input is ignored.
Automatic/manual signal switching
Manual operation
Frequency setting potentiometer
Automatic signal
4 to 20mADC
43
SPECIFICATIONS
with FR-A7AZ.)
A700
common
do not have terminal 10E.)
with FR-
A700
+5V 10
2
5
+10V 10E
2
5
ON
AU
AU
SD
Automatic
10
Operation
operation
2
Inverter
4 to 20mA
5
4
Manual-Automatic Switching
1
OFF
Manual
operation
0 to 5V
(0 to 10V)