Mitsubishi Electric FR-A700 Series, Техническое руководство

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1
S
PECIFI
C
A
T
IONS
SPECIFICATIONS
1.4.6 Relationships between frequency setting input signals and output frequencies
(10, 10E*, 2, 5, 1*, 6*, 4, AU)
(common
)
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.
(1) Voltage input (10, 10E*, 2, 6*, 4, 5)
(* do not have terminal 10E.)
(*Terminal 6 is available only in the with FR-
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
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.
(2) Current input selection (2*, 4, 5, AU)
(*Current input with terminal 2 is not available for
)
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.
(* do not have terminal 10E nor terminal 1.)
(*Terminal 6 is available only in the with FR-A7AZ.)
common
E700 D700
A700
2
3
1
Frequency
setting
potentiometer
1/2W1k
(+)
( - )
2
5
4
1
10E
10VDC
10
5VDC
(+)
( - )
Auxiliary
input
Terminal 4
input
bias
gain
Analog Input Block Diagram
A700 F700
0.5
0
[ Pr. 125(903) ]
[ Pr. 126(905) ]
[ Pr. 1 ]
[ Pr. 18 ]
[ Pr. 2 ]
[ Pr.13 ]
[ Pr. 73 ]
Frequency at 5V
input (or 10V, 20mA)
(1 to 400Hz)
Maximum
frequency limit
(0 to 400Hz)
Minimum
frequency limit
(0 to 120Hz)
Starting frequency
(0 to 60Hz)
Input voltage
is proportional
to output
frequency.
Frequency setting signal
5V
(10V)
(20mA)
O
u
tp
ut
f
req
ue
nc
y
(
H
z
)
Relationships between Frequency Setting Inputs
and Output Frequencies
z 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.
z For operation at 0 to 10VDC, set [ Pr. 73 ] to 0 to
10VDC input. Use terminal 10E for the built-in
power supply.
common
E700 D700
A700
A700
+5V 10
0 to 5V
DC
2
5
+10V 10E
2
5
0 to 10V
DC
common
E700 D700
AU
SD
10
2
5
4
OFF ON
Manual-Automatic Switching
Automatic/manual signal switching
Manual operation
Frequency setting potentiometer
4 to 20mADC
Automatic signal
Inverter
AU
Operation
Automatic
operation
4 to 20mA
Manual
operation
0 to 5V
(0 to 10V)