Chapter 7 I/O Module
7-3
7.2 Digital Input Module Specification
7.2.1 8 point DC24V Input Module (Source/Sink Type)
DC input module
Model
Specification
XGI-D21A
Input point 8 point
Insulation method Photo coupler insulation
Rated input voltage DC24V
Rated input current About 4 ㎃
Operation voltage range DC20.4~28.8V (ripple rate < 5%)
Input Derating None
On Voltage/Current DC19V or higher / 3 mA or higher
Off Voltage/Current DC11V or lower / 1.7 mA or lower
Input resistance
About 5.6 kΩ
Off → On
1ms/3ms/5ms/10ms/20ms/70ms/100ms (set by CPU parameter)
Default:3ms Response
time
On → Off
1ms/3ms/5ms/10ms/20ms/70ms/100ms (set by CPU parameter)
Default:3ms
Insulation pressure AC560V rms/3 Cycle (altitude 2000m)
Insulation resistance 10 ㏁ or more by megger
Common Method 8 point / COM
Proper cable size Twisted pair 0.3~0.75 ㎟ (external diameter 2.8mm or less)
Proper compressed terminal R1.25-3 (not allowed to use a sleeve attached compressed terminal.)
Current consumption (㎃) 20mA
Operation indicator Input On LED On
External connection method 9 point terminal block connector (M3 X 6 screw)
Weight 0.1 kg
Circuit configuration
Terminal
block
Contact
TB1
P0
TB2 P1
TB3 P2
TB4 P3
TB5 P4
TB6 P5
TB7 P6
TB8 P7
TB9 COM
DC24V
Internal
circuit
R
1
7
0
TB1
COM
Photocoupler
Terminal block no.
TB8
TB9
R
00
COM
01
02
03
04
05
06
07
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