Hitachi SJ300-037HFE Manuel D’Utilisation

Analog Input Operation

Oper

ations

a

nd Moni

tor

ing

The following tables show the available analog input settings. Parameters A006, A005, and 
input terminal [AT] determine the External Frequency Command input terminals that are avail-
able and how they function. The Trim Frequency input [O2]—[L] is available (when check 
marked) for some settings. Other settings make the reverse direction (in addition to forward) 
available for bipolar input settings (when check marked). A bipolar input responds to positive 
input voltages with a forward motor rotation, and to negative input voltages with reverse motor 
rotation.

The table below applies when the [AT] input function is not assigned to any intelligent input 
terminal. The A005 setting, normally used in conjunction with an [AT] input, is ignored.

CAUTION: Whenever the [AT] input function is not assigned to any input terminal and 
reverse rotation is not desired or is unsafe, be sure to set A006 = 01. This setting makes the 
[O2] input unipolar only.

00

00

OFF

[O]

✘

✘

ON

[OI]

✘

✘

01

OFF

[O]

✘

✘

ON

[O2]

✘

✔

01

00

Example 

1

OFF

[O]

[O2]

✘

ON

[OI]

[O2]

✘

01

OFF

[O]

[O2]

✘

ON

[O2]

✘

✔

02

00

Example 

2

OFF

[O]

[O2]

✔

ON

[OI]

[O2]

✔

01

OFF

[O]

[O2]

✔

ON

[O2

✘

✔

00

—

(not 

assigned 

to any 

input 

terminal)

[O2]

✘

✔

01

—

Summation of

[O] and [OI]

[O2]

✘

02

—

Summation of

[O] and [OI]

[O2]

✔