4−28
Analog Input Current/Voltage Select
The [AT] terminal selects whether the inverter uses the voltage [O] or current [OI]
input terminals for external frequency control. When intelligent input [AT] is ON, you
can set the output frequency by applying a current input signal at [OI]-[L]. When the
[AT] input is OFF, you can apply a voltage input signal at [O]-[L] to set the output
frequency. Note that you must also set parameter A001 = 01 to enable the analog
terminal set for controlling the inverter frequency.
Option
Code
Terminal
Symbol
Function Name State Description
16
AT Analog Input
Voltage/Current
Select
ON See the table down below
OFF
Valid for inputs:
C001~C007
Example (default input configuration shown
for –FE and –FU models; –F models require input
configuration):
See I/O specs on page 4–6.
Required settings
A001 = 01
Notes:
• If the [AT] option is not assigned to any intelligent
input terminal, then inverter recognizes [AT] =
OFF in following table.
Combination of A005 setting and [AT] input for
analog input activation.
• Be sure to set the frequency source setting
A001=01 to select the analog input terminals.
A005
[AT] Input Analog Input Configuration
00
ON [O]
OFF [OI]
02
ON Keypad Pot
OFF [O]
03
ON Keypad Pot
OFF [OI]
H O OI L
Å
+ -
4-20 mA
0-10 V
AT
7654321L
PCS
P24
PLC
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