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