Mitsubishi Electric FR-A720-0.4K Instruction Manual page 37

Control circuit specifications
Terminal Terminal
Symbol Name
External
transistor
common
(sink)
(initial setting)
PC
Contact input
common
(source)
24VDC power
supply
10E
Frequency
setting power
supply
10
Frequency
2 setting
(voltage)
Frequency
4 setting
(current)
Frequency
1 setting
auxiliary
Frequency
5 setting
common
* Set Pr. 73, Pr. 267, and a voltage/current input switch correctly, then input an analog signal in accordance with the setting.
Applying a voltage signal with voltage/current input switch ON (current input is selected) or a current signal with switch OFF (voltage input is
selected) could cause component damage of the inverter or analog circuit of signal output devices. (For details, refer to page 286.)
(2) Output signals
Terminal Terminal
Symbol Name
A1,
Relay output 1
B1,
(Fault output)
C1
A2,
B2, Relay output 2
C2
26
Description
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a
programmable controller, in the sink logic to avoid malfunction by
undesirable currents.
Common terminal for contact input terminal (source logic).
Can be used as 24VDC 0.1A power supply.
When connecting the frequency setting potentiometer at an initial
status, connect it to terminal 10.
Change the input specifications of terminal 2 when connecting it
to terminal 10E. (Refer to Pr. 73 Analog input selection page 290.)
Inputting 0 to 5VDC (or 0 to 10V, 0 to 20mA) provides the
maximum output frequency at 5V (10V, 20mA) and makes input
and output proportional. Use Pr. 73 to switch from among input 0
to 5VDC (initial setting), 0 to 10VDC, and 0 to 20mA.
Set the voltage/current input switch in the ON position to select
current input (0 to 20mA).
*
Inputting 4 to 20mADC (or 0 to 5V, 0 to 10V) provides the
maximum output frequency at 20mA makes input and output
proportional. This input signal is valid only when the AU signal is
ON (terminal 2 input is invalid). Use Pr. 267 to switch from among
input 4 to 20mA (initial setting), 0 to 5VDC, and 0 to 10VDC. Set
the voltage/current input switch in the OFF position to select
voltage input (0 to 5V/0 to 10V).
functions.
Inputting 0 to ±5 VDC or 0 to ±10VDC adds this signal to terminal
2 or 4 frequency setting signal. Use Pr. 73 to switch between the
input 0 to ±5VDC and 0 to ±10VDC (initial setting).
Common terminal for frequency setting signal (terminal 2, 1 or 4)
and analog output terminal AM. Do not earth (ground).
Description
1 changeover contact output indicates that the inverter
protective function has activated and the output stopped.
Fault: No conduction across B-C (Across A-C Continuity),
Normal: Across B-C Continuity (No conduction across A-C)
1 changeover contact output
Use Pr. 858 to switch terminal
*
Rated Refer to
Specifications page
Power supply
voltage range
19.2 to 28.8VDC 29
Permissible load
current 100mA
10VDC±0.4V
Permissible load 286
current 10mA
5.2VDC±0.2V
Permissible load 286
current 10mA
Voltage input:
Input resistance
10kΩ ± 1kΩ
Maximum
permissible
286
voltage 20VDC
Current input:
Input resistance
245Ω ± 5Ω
Maximum
permissible
current 30mA
4 2
Voltage/current
286
input switch
switch1
switch2
Input resistance
10kΩ ± 1kΩ
Maximum 286
permissible
voltage ± 20VDC
- -- - -- -- -- - -- -- - -- -- 286
Rated Refer to
Specifications page
Contact capacity:
239
230VAC 0.3A
(Power
factor = 0.4)
30VDC 0.3A
239