Hitachi X200 Series instruction manual Analog Input Current/Voltage Select, A001 =

4−22

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	Terminal	Function Name	State	Description
Code	Symbol
16	AT	Analog Input	ON	See the table down below
		Voltage/Current	OFF
		Select

Operations and Monitoring

Valid for inputs:	C001~C005
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.

•Be sure to set the frequency source setting A001=01 to select the analog input terminals.

Example (default input configuration shown for –FU models; –FE models require input configuration—see page 3–49):

AT

5 4 3 2 1 L PCS P24

AM H O OI L

Å 4-20 mA

+ - 0-10 V

See I/O specs on page 4–6.

Combination of A005 setting and [AT] input for analog input activation.

A005	[AT] Input	Analog Input Configuration
02	ON	Keypad Pot
	OFF	[O]
03	ON	Keypad Pot
	OFF	[OI]
04	(ignored)	[O]
05	(ignored)	[OI]

Note that you cannot give [O] and [OI] input at the same time on X200 inverter.