Yokogawa IR400 User Manual

Page 23

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IM 11G02N01-01E

(1) Analog output signal (AO): terminal block 1, 1 to 20, terminal block 2, 3 to 6.

Output signal:

4 to 20 mA DC or 0 to 1 V DC (selected when ordering)

Non-insulated output

Allowable load: 4 to 20 mA DC, 550

or less

0 to 1 V DC, 100k

or more

Analog output is provided from each terminal corresponding to the channel displayed in the
measurement screen.

All of analog output signals for the instrument are not isolated. It is recommended to isolate
signals individually to prevent interference from unnecessary signals or to prevent external
interference, especially leading the cable of more than 30 meters or to outdoor.

(2) O

2

sensor input: terminal block 2, 1 to 2.

Input signal:

External zirconia O

2

analyzer:

Zirconia O

2

sensor signal (ZX8D

ء C output)

External O

2

analyzer:

0 to 1 V DC (DC input resistor of 1M

or more)

It is used when the external zirconia O

2

analyzer or external O

2

analyzer is specified as order.

To connect to the output of the external Zirconia analyzer or external O

2

analyzer prepared

separately.

In case of an external O

2

analyzer, input a signal of 0 to 1 V DC with respect to O

2

full scale

of the analyzer.

In case of built-in O

2

analyzer, do not use the terminals.

O

2

sensor input is not isolated. It is recommended to isolate when an external O

2

analyzer is

installed apart from this analyzer. Zirconia O

2

sensor Yokogawa make IR400 should be

installed at a location that is as close to this instrument as possible.

(3) Contact input (DI): terminal block 2, 1 to 20, terminal block 3, 5 to 10.

It is for a contact input at no voltage. An input is provided when switching to short circuit
(on) or open (off).

No voltage is applied to the terminals.

(4) Contact output (DO): terminal block 3, 11 to 20, terminal block 4 and terminal block 5

Contact rating:

250 V AC/2 A, load resistance

An output is for a relay contact output. An output is provided when switching to conductive
(on) or open (off).

Wiring of analog output signal, O

2

sensor input and contact input should be fixed separately

from the wiring of power supply and contact output.

Note) To avoid the effect of noise generated from external units, be sure to ground the

analyzer main unit. Continue between the I/O module mounting plate and the panel
and connect the panel casing to the same ground as the analyzer.

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