61 ADAM-4000 Series User Manual
Chapter 3 I/O Modules
3.13 ADAM-4051 16-channel Isolated Digital Input
Module
The ADAM-4051 is a 16 channel Digital Input Module. It is built with 2500VDC optical
isolation, and it is suitable for critical applications. The main difference from other
modules is that ADAM-4051 accepts 10 ~ 50V input voltage to fit various digital sig-
nals like 12 V, 24 V, and 48 V. Moreover, users can read the current status from the
LED indicators on the front panel.
Figure 3.46 ADAM-4051 16-channel Isolated Digital Input Module
Channel: 16
Optical Isolation: 2500 VDC
Opto-isolator response time: 25 s
Over-voltage Protect: 70 VDC
ESD (Electro Static Discharge): 2000 VDC
LED Indicator: On: Active; Off: Non-active
Input Voltage:
– Dry Contact Logic level 1: close to GND, Logic level 0: open
– Wet Contact Logic level 1: 10 ~ 50 V, Logic level 0: 3 V
Power consumption: 1W @ 24 VDC
I/O Connector Type: 13 pin plug-in terminal*2
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