Chapter 7 Usage of Various Functions

7.2.5 RTD input module(Standard type only)

1) Performance specification

The performance specification of the RTD input module are following.

Item

 

 

Specification

Connectable RTD

Pt 100 (JIS C1640-1989, DIN 43760-1980)

JPt100 (KS C1603-1991, JIS C1604-1981)

 

 

Temperature input range

Pt 100 :

-200 ~ 600(18.48 to 313.59)

JPt100 :

-200 ~ 600(17.14 to 317.28)

 

 

Digital output

 

Digital conversion value : 0 to 4,000

 

Detected temperature value : -2000 to 6000 (one digit after point * 10)

 

 

Burn out detection

Each of three wires at every channel has detection function.

Accuracy

 

±0.5% [Full Scale]

Maximum conversion

40 scan / 1 module

speed

 

 

 

 

Number of temperature

4Channel / 1module

input device points

 

 

Insulation method

Photo-coupler insulation between the input terminal and the PLC power

supply (non-insulation between channels)

 

 

Connection terminal block

8-point terminal block * 2

Current consumption

25

 

 

 

 

 

External power

Voltage

DC21.6

26.4V

supply

Current

70

 

Weight

 

240g

 

2) Names of parts and functions

 

 

 

24V

A

b

 

 

B

24G

 

B

A

b

Input

 

CH2

CH3

G7F-RD2A

 

 

 

PROGRAMMABLE

 

 

LOGIC

 

 

 

 

CONTROLLER

 

 

PWR

 

 

CH0

b

A

CH1

b

A

 

B

 

·

B

·

 

 

 

 

No

Name

Contents

 

 

 

RUN LED

Indicate the operating status the G7F-RD2A

RTD input

Terminal which connects Pt100 or JPt100

terminal

 

 

External power

External voltage 24VDC needs to this terminal

input terminal

 

 

Extension cable

This cable is used to connect while RTD input

module is used

 

 

Extension cable

The connector connects extension cable when

connector

extended module is used.

 

Explain about names of parts and functions

7-63

Page 147
Image 147
LG Electronics 120S user manual Name Contents, Explain about names of parts and functions