Mitsubishi FR-A740-00023-EC, Instruction Manual

Page: 34 / 474

24
Control circuit specifications
*1 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 275 .)
(2) Output signals
F
re
que
ncy
set
tin
g
10E
Frequency
setting 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 278.)
10VDC±0.4V
Permissible load
current 10mA
275
10
5.2VDC±0.2V
Permissible load
current 10mA
275
2
Frequency
setting
(voltage)
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).
*1
Voltage input:
Input resistance
10k
Ω
± 1k
Ω
Maximum
permissible
voltage 20VDC
Current input:
Input resistance
245
Ω
± 5
Ω
Maximum
permissible
current 30mA
275
4
Frequency
setting
(current)
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).
*1
Use Pr. 858 to switch terminal
functions.
275
1
Frequency
setting
auxiliary 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).
Input resistance
10k
Ω
± 1k
Ω
Maximum
permissible
voltage ± 20VDC 275
5
Frequency
setting
common
Common terminal for frequency setting signal (terminal 2, 1 or 4)
and analog output terminal AM and CA. Do not earth (ground).
-------------------- 275
Ty
p
e Terminal
Symbol
Terminal
Name
Description
Rated
Specifications
Refer to
page
Re
la
y
A1,
B1,
C1
Relay output 1
(alarm output)
1 changeover contact output indicates that the inverter
protective function has activated and the output stopped.
Abnormal: No conduction across B-C (Across A-C Continuity),
Normal: Across B-C Continuity (No conduction across A-C)
Contact capacity:
230VAC 0.3A
(Power
factor=0.4)
30VDC 0.3A
230
A2,
B2,
C2
Relay output 2 1 changeover contact output 230
Ty
p
e Terminal
Symbol
Terminal
Name
Description
Rated
Specifications
Refer to
page
Voltage/current
input switch
2 4
switch1
switch2