2.2.3
Digital Input Modules
Specifications
14
MITSUBISHI ELECTRIC
Item
ST1X2-DE1
ST1X4-DE1
ST1X16-DE1
Number of inputs
2
4
16
Isolation method
Photocoupler
Rated input voltage
24 V DC
Rated allowable voltage
20.4 tos 28.8 V, ripple ratio within 5 %
Rated input current
4 mA
Voltage for ON
≥
19 V
Current for ON
≥
3 mA
Voltage for OFF
≤
11 V
Current for OFF
≤
1.7 mA
Input resistance
5.6 k
Ω
Response time
OFF
씮
ON
0.5 ms/1.5 ms or less at 24 V DC
Factory setting: 1.5 ms
The response time of the input module can be set by using the configuration
software of the master station. When the master station is a Mitsubishi Elec-
tric PLC, use GX Configurator-DP.
ON
씮
OFF
Maximum current at 24 V DC
2 A
(During online module change, the maximum inrush current is 2A per input
for approx. 5 ms.)
Inputs per group
2
4
16
Dielectric withstand voltage
500 V AC for 1 minute across DC external terminals and FG
Insulation resistance
≥
10 M
Ω
(across DC external terminals and FG, checked with insulation
resistance tester)
Noise durability
Tested with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1
µ
s/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Protection of degree
IP20
Indication of operating status
With LEDs RUN, ERR and 1 LED for each input
Number of occupied slices (Width)
1 slot (12.6 mm)
1 slots (12.6 mm)
8 slots (100.8 mm)
Number of occupied
I/O points
Inputs
2
4
16
Outputs
2
4
16
Internal power consumption
(5 V DC)
85 mA
95 mA
120 mA
Weight
0.03 kg
0.03 kg
0.11 kg