Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 70

Terminal
Type Terminal name
symbol
10E
Frequency setting
power supply
10
Frequency setting
2
(voltage)
Frequency setting
4
(current)
Frequency setting
1
auxiliary
Frequency setting
5
common
10
PTC thermistor input
2
24 V external power
+24
supply input
*1 The terminal function can be selected by Pr.178 to Pr.196 (Input terminal function selection). (Refer to
*2 Set Pr.73, Pr.267, and the voltage/current input switch correctly, then input an analog signal in accordance with the setting.
Applying a voltage with each of the voltage/current input switch ON (current input is selected) or a current with each of the switch OFF (voltage
input is selected) could cause component damage of the inverter or analog circuits of output devices. (For the details, refer to
*3 Sink logic is initially set for the FM-type inverter.
*4 Source logic is initially set for the CA-type inverter.
Terminal function description
When connecting the frequency setting potentiometer at an
initial status, connect it to terminal 10.
Change the input specifications of terminal 2 using Pr.73
when connecting it to terminal 10E.
Inputting 0 to 5 VDC (or 0 to 10 V, 0 to 20 mA) provides the
maximum output frequency at 5 V (10 V, 20 mA) and makes
input and output proportional.
Use Pr.73 to switch among input 0 to 5 VDC (initial setting),
0 to 10 VDC, and 0 to 20 mA. Set the voltage/current input
switch 1 for terminal 2 in the ON position to select current
*2
input (0 to 20 mA).
Inputting 4 to 20 mADC (or 0 to 5 V, 0 to 10 V) provides the
maximum output frequency at 20 mA and 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 among input 4 to 20 mA (initial setting), 0 to 5 VDC,
and 0 to 10 VDC. Set the voltage/current input switch 2 for
terminal 4 in the OFF position to select voltage input (0 to 5
*2
V / 0 to 10 V). Use Pr.858 to switch terminal functions.
Input 0 to ±5 VDC or 0 to ±10 VDC to add this signal to the
frequency setting signal input via terminal 2 or 4. Use Pr.73
to switch between input 0 to ±5 VDC and 0 to ±10 VDC
(initial setting). Use Pr.868 to switch terminal functions.
Common terminal for the frequency setting signal (via
terminal 2, 1, or 4) and for the analog output terminals AM
and CA. Do not earth (ground).
For receiving PTC thermistor outputs.
When PTC thermistor is valid (Pr.561 ≠ "9999"), terminal 2
is not available for frequency setting.
For connecting a 24 V external power supply.
If a 24 V external power supply is connected, power is
supplied to the control circuit while the main power circuit is
OFF.
Refer
Rated specification to
page
10 ± 0.4 VDC,
permissible load current: 473
10 mA
5 ± 0.5 VDC,
permissible load current: 473
10 mA
For voltage input,
input resistance: 10 ± 1
kΩ,
473
maximum permissible
voltage: 20 VDC.
For current input,
input resistance: 245 ± 5
Ω,
permissible maximum
current: 30 mA.
Voltage/current
473
input switch
switch2
switch1
2 4
Input resistance:
10 ± 1 kΩ,
permissible maximum 473
voltage:
±20 VDC
— 473
Applicable PTC
thermistor specification,
overheat detection
394
resistance:
0.5 to 30 kΩ
(Set by Pr.561)
Input voltage: 23 to 25.5
VDC, 78
input current: 1.4 A or less
page 496.)
page 473.)
2. INSTALLATION AND WIRING
2.6 Control circuit
1
2
3
4
5
6
7
8
9
10
69