Opto22 SNAP-AOA-28

SNAP-AOA-28 SNAP 2-Ch 0-20 mA Current Loop Analog Output Module

The SNAP-AOA-28 provides two channels of analog current output at a nominal range of 0-20 mA. Although the two
channels are not isolated from each other, the module is transformer isolated and optically isolated from other modules
and devices. The module is factory calibrated.
 
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted
controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for
PC-based control or for use as intelligent remote I/O for an Allen-Bradley MicroLogix or other RSLogix-based PLC
system, such as ControlLogix or CompactLogix.
 

Input	12-bit serial data (each channel)
Outputs	0 to 20 mA (each channel)
Span	20 mA
Resolution	4.9 microamps
Response Time (% of span/delta I/ delta time)	99.9%/15.98 mA/3 mS
DC Common Mode Rejection	>-120 dB
AC Common Mode Rejection	>-120 dB @ 60 Hz
Maximum Operating Common Mode Voltage	250 V
Common Mode Resistance	>1000 Megohms
Accuracy	0.1% of Span
Gain Temperature Coefficient	50 PPM/°C
Offset Temperature Coefficient	20 PPM/°C
Module Power Requirements	5 Volts DC (±0.15) @ 150 mA
Loop Power Requirements	8 Volts DC (min) to 32 Volts DC (max)
Max. Loop Resistance (Ohms) @ Loop Supply	250 8V	450 8V	650 12V	1050 24V	1450 32V
Max. Loop Resistance formula	(Loop Voltage - 3)          0.02
Ambient Temperature:   Operating   Storage	0 °C to 70 °C -25 °C to 85 °C
Torque, hold-down screws	4 in-lb (0.45 N-m)
Torque, connector screws	5.26 in-lb (0.6 N-m)
Agency Approvals	UL, CE, FM, RoHS, DFARS
Warranty	Lifetime