CM1 5
4
3
2
1
AT SFT FW
ON
Analog Input Current/Voltage Select [AT]
The [AT] terminal selects whether the inverter uses the voltage [O] or current
[OI] input terminals for external frequency control. When the switch between
the terminals [AT] and [CM1] is on, it is possible to set the output frequency
by applying a current input signal at [OI]-[L]. When the terminal is turned off,
the voltage input signal at [O]-[L] is available. Note that you must also set
parameter A 01 = 1 to enable the analog terminal set for controlling the inverter
frequency, and set the analog voltage(V)/current(I) selection switch exactly.
Option
Code
Terminal
Symbol
Function Name
Input
State
Description
12
AT
Analog Input
Voltage/current
select
ON
OFF
Terminal OI is enabled for current
input(uses terminal L for power
supply return)
Terminal O is enabled for voltage
input(uses terminal L for power
supply return)
Valid for inputs:
Required setting
C01,C02,C03,C04,C05
A01=01
Notes:
¡
If the [AT] option is not assigned to any
intelligent input terminal, then inverter
uses the algebraic sum of both the
voltage and current inputs for the frequency
command(and A01=01)
¡
When using either the analog current and
voltage input terminal, make sure that the
[AT] function is allocated to an intelligent
input terminal.
¡
Be sure to set the frequency source setting
A01=01 to select the analog input terminals.
Example:
8-16
ENDA E-100
INSTRUCTION MANUAL
