Hitachi SJ700-2

Chapter 4 Explanation of Functions

4.2.11 External analog input setting (O, OI, and O2)

A005: [AT] selection

A006: [O2] selection

C001 to C008: Terminal [1] to [8] functions

Related code

The inverter has the following three types of external analog input

terminals:

O-L terminal: 0 to 10 V

OI-L terminal: 4 to 20 mA

O2-L terminal: -10 to 10 V

The table below lists the settings of the external analog input terminals.

Item Function

code Data Description

00 Switching between the O and OI

terminals with the AT terminal Turning on the AT terminal enables the OI-L terminal.

Turning on the AT terminal enables the O-L terminal.

01 Switching between the O and O2

terminals with the AT terminal Turning on the AT terminal enables the O2-L terminal.

Turning on the AT terminal enables the O-L terminal.

(02) (Valid only when the OPE-SR is used)

Switching between the O terminal and

the control with the AT terminal

Turning on the AT terminal enables the pot on

OPE-SR terminal.

Turning on the AT terminal enables the O-L terminal.

(03) (Valid only when the OPE-SR is used)

Switching between the OI terminal and

the control with the AT terminal

Turning on the AT terminal enables the pot on

OPE-SR terminal.

Turning on the AT terminal enables the OI-L terminal.

[AT]

selection A005

(04) (Valid only when the OPE-SR is used)

Switching between the O2 terminal

and the control with the AT terminal

Turning on the AT terminal enables the pot on

OPE-SR terminal.

Turning on the AT terminal enables the O2-L terminal.

00 Using the O2 terminal independently

01 Using the O2 terminal for auxiliary frequency command (nonreversible) in addition to the O and

OI terminals

02 Using the O2 terminal for auxiliary frequency command (reversible) in addition to the O and OI

terminals

[O2]

selection A006

03 Disabling the O2 terminal

Note that whether frequency commands are input to the O2-L terminal and whether the motor operation is

reversible depend on the combination of settings of functions "A005" and "A006" and whether function "16"

(AT) is assigned to an intelligent input terminal as shown in the table below.

When the motor operation is reversible, the inverter operates the motor in a reverse direction if the sum of

the frequencies specified by the main frequency and auxiliary frequency commands is less than 0 (even

when the forward operation [FW] terminal is on). Even when no wire is connected to the 02 terminal,

reverse operation of the motor may occur and prolong the acceleration time if the output voltage fluctuates

near 0 V.

A006 A005

terminal Main frequency command Whether to input an auxiliary

frequency command

(via the O2-L terminal)

Reversible/

nonreversible

OFF O-L terminal No input

00 ON OI-L terminal No input

OFF O-L terminal No input Nonreversible

00,03 01 ON O2-L terminal No input Reversible

OFF O-L terminal Input 00

(Example 1) ON OI-L terminal Input

OFF O-L terminal Input Nonreversible

01 01 ON O2-L terminal No input Reversible

OFF O-L terminal Input 00

(Example 2) ON OI-L terminal Input

OFF O-L terminal Input

When the AT

function is

assigned to an

intelligent input

terminal

02 01 ON O2-L terminal No input

Reversible

00 －－ O2-L terminal No input Reversible

01 －－ Addition of signals on O-L and

OI-L terminals Input Nonreversible

02 －－ Addition of signals on O-L and

OI-L terminals Input Reversible

When the AT

function is not

assigned to any

intelligent input

terminal 03 －－ Addition of signals on O-L and

OI-L terminals No input Nonreversible

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