305 ADAM-4000 Series User Manual
Appendix A Technical Specifications
A.12 ADAM-4051/4052 Isolated Digital Input Module
Table A.16: ADAM-4051/4502 Specifications
DI/O channel number
ADAM-4501: 16 digital inputs
ADAM-4052: 8 digital inputs (6 fully independent isolated
channels, and 2 isolated channels with common ground)
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)
Digital input level
ADAM-4051:
Dry Contact:
Logic level 0:
Logic level 1:
Wet Contact:
Logic level 0:
Logic level 1:
ADAM-4052:
Logic level 0:
Logic level 1:
Close to GND
Open
+3V maximum
+10 to 50V
+1V maximum
+3 to 30V
Input resistance
ADAM-4051: 5.2 k
ADAM-4052: 3 k
Isolation voltage
ADAM-4051: 2500 V
DC
ADAM-4052: 5000 V
RMS
Over-voltage protect
70 V
DC
(ADAM-4051 only)
Support protocol
ADAM-4051:
ADAM ASCII and MODBUS/RTU
ADAM-4052:
ADAM ASCII
Watchdog timer
ADAM-4051: System (1.6 second) and communication
ADAM-4052: System (1.6 second)
Power supply
+10 to +30 V
DC
(non-regulated)
Power consumption
ADAM-4051:
1.0 W @ 24 V
DC
ADAM-4052: 0.4 W @ 24 V
DC