Control circuit
37
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 the voltage/current input switch ON (current input is selected) or a current with 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 the FR-F800 Instruction Manual
(Detailed).)
Sink logic is initially set for the FM-type inverter.
Source logic is initially set for the CA-type inverter.
F
requen
cy se
tting
10E
5
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 using
Pr.73
when connecting it to terminal 10E.
10 VDC
0.4 V
Permissible load current
10 mA
10
5
5 VDC
0.5 V
Permissible load current
10 mA
2
5
Frequency setting
(voltage)
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 in the ON position to
select current input (0 to 20 mA).
When voltage is input:
Input resistance 10 k
to
11 k
Maximum permissible
voltage 20 VDC
When current is input:
Input resistance 245
5
Permissible maximum
current 30 mA
4
5
Frequency setting
(current)
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 in the OFF
position to select voltage input (0 to 5 V/0 to 10 V).
Use
Pr.858
to switch terminal functions.
1
5
Frequency setting
auxiliary
Inputting 0 to ±5 VDC or 0 to ±10 VDC adds this
signal to terminal 2 or 4 frequency setting signal. 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.
Input resistance 10 k
to
11 k
Permissible maximum
voltage
20 VDC
T
hermistor
10
2
—
PTC thermistor input
For receiving PTC thermistor outputs.
When PTC thermistor is valid (
Pr.561
"9999"),
terminal 2 is not available for frequency setting.
Applicable PTC
thermistor specification
Overheat detection
resistance:
0.5 to 30 k
(Set by
Pr.561
)
Ex
te
rn
al
Po
we
r
su
pply input
+24
SD
24 V external power
supply input
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 to
.)
Input voltage 23 to 25.5
VDC
Input current 1.4 A or less
Ty
p
e
Terminal
symbol
Common
Terminal name
Terminal function description
Rated specification
Voltage/current
input switch
2
4
switch1
switch2
