309 ADAM-4000 Series User Manual
Appendix A Technical Specifications
A.14 ADAM-4055 Isolated Digital Input/Output
Module
Table A.18: ADAM-4055 Isolated Digital Input/Output Module
DI/O channel number
8 digital inputs
8 digital outputs
Input/Output
speed (bps)
Maximum distance
RS-485 (2-wire)
1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K, 115.2K
4000 ft. (1200 m)
Isolation voltage
2500 V
DC
Opto-isolator response time 25 µs
Over-voltage protect
70 V
DC
ESD (Electro Static Discharge)
2000 V
DC
Digital input level
Dry Contact:
Logic level 0:
Logic level 1:
Wet Contact:
Logic level 0:
Logic level 1:
Open
Close to GND
+3V maximum
+10 to 50V
Digital output
Sink-current
Power dissipation
Open collector to 40 V
200 mA maximum Channel: 1W maximum Total: 2.2W (8
channels)
LED Indicator:
On: Active
Off: Non-active
Support protocol ADAM ASCII and MODBUS/RTU
Watchdog timer System (1.6 second) and communication
Power supply
+10 to +30 V
DC
(non-regulated)
Power consumption
1.0 W @ 24 V
DC
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