301 ADAM-4000 Series User Manual
Appendix A Technical Specifications
A.10 ADAM-4021/4024 Analog Output Module
Table A.14: ADAM-4021/4024 Specifications
Input
speed (bps)
Maximum distance
RS-485 (2-wire)
1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K, 115.2K
4000 ft. (1200 m)
AO channel number
ADAM-4021: 1
ADAM-4024: 4
Output type mA, V
Output range 0~20 mA, 4~20 mA and ±10 V
Accuracy
ADAM-4021:
±0.1% of FSR for current output
±0.2% of FSR for voltage output
ADAM-4024:
±0.1% of FSR for current output
±0.1% of FSR for voltage output
Resolution 12-bit
Readback accuracy ±0.1% of FSR (ADAM-4021 only)
Zero drift voltage output current
output
±30 V/°C
±0.2 A/°C
Span temperature coefficient ±25 ppm/°C
Isolation rated voltage
3000 V
DC
Programmable output
slope
0.125 to 128 mA/second
0.0625 to 64 V/second
Current load resistor 0 to 500 (source)
Bandwidth 100 samples/second
Output impedance 0.5
Support protocol
ADAM-4021: ADAM ASCII
ADAM-4024: ADAM ASCII and MODBUS/RTU
Watchdog timer
ADAM-4021: System (1.6 second)
ADAM-4024: System (1.6 second) and communication
Power supply
+10 to +30 V
DC
(non-regulated)
Power consumption
ADAM-4021: 1.4 W @ 24 V
DC
ADAM-4024: 3.0 W @ 24 V
DC
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