OPT-SNAP-AOA-23iSRC

SNAP-AOA-23-iSRC Isolated SNAP 2-Ch 4-20 mA Current Loop Analog Output Module, with Loop Sourcing

The SNAP-AOA-23-iSRC module provides two channels of current output with a nominal output range of 4 mA to 20
mA. The module includes built-in loop sourcing capability.
 
With the connection of a single 24 V power supply, the module sources two 24 V loops. The loop sources are internally
connected to the individual outputs. The two channels and their loop sources are isolated from each other; they do not
share any field connection. In addition, each loop source is current limited so that an external fault on one loop will not
affect the other.
 
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.
 
If you need a Factory Mutual-approved version, see the SNAP-AOA-23-iSRC-FM instead.
 

Input	12-bit serial data (each channel)
Outputs	4 to 20 mA (each channel)
Span	16 mA
Resolution	3.9 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
Max. Loop Resistance @ Loop Supply	950 Ohms
Ambient Temperature:   Operating   Storage	0 °C to 70 °C -25 °C to 85 °C
Isolation: Optical	4000 V
Isolation: Transformer	1500 V
Isolation: Channel to Channel	250 V continuous (1500 V transient)
Power Requirements	5 Volts DC (±0.15) @ 200 mA
Power Requirements - Loop Power (Input)	From separate field connector; 24 VDC nominal (70 mA max) @ 24 V input, both loops @ 20 mA), 30 VDC maximum
Loop Power (Output)	24 VDC (±1.5 V) @ 20 mA Open loop: 30 V maximum Shorted loop: 24 mA nominal
Agency Approvals	CE, RoHS, DFARS FM (SNAP-AOA-23-iSRC-FM only)
Torque, hold-down screws	4 in-lb (0.45 N-m)
Torque, connector screws	5.26 in-lb (0.6 N-m)
Warranty	Lifetime

Rev: 04/13