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Chapter 7 Usage of Various Functions
7-63
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
Ω
)
JPt100 : -200 ~ 600
℃
(17.14 to 317.28
Ω
)
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
speed
40 scan / 1 module
Number of temperature
input device points
4Channel / 1module
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
㎃
Voltage
DC21.6
∼
26.4V
External power
supply
Current
70
㎃
Weight 240g
2) Names of parts and functions
No
Name
Contents
①
RUN LED
Indicate the operating status the G7F-RD2A
②
RTD input
terminal
Terminal which connects Pt100 or JPt100
③
External power
input terminal
External voltage 24VDC needs to this terminal
④
Extension cable
This cable is used to connect while RTD input
module is used
④
Extension cable
connector
The connector connects extension cable when
extended module is used.
Explain about names of parts and functions
③
②
①
④
②
⑤
24V
B
A
b
·
B
A
b
·
A
b
B
A
b
24G
G7F-RD2A
PROGRAMMABLE
LOGIC
CONTROLLER
CH2
CH3
Input
CH0
CH1
PWR
B