OPTO 22 – SNAP-AOA-3 _ SNAP 1-Ch 4-20 mA Current Loop Analog Output Module
OPTO 22 – SNAP-AOA-3 _ SNAP 1-Ch 4-20 mA Current Loop Analog Output Module
Quick Specs:
- SNAP 1-Ch 4-20 mA Current Loop Analog Output Module
The SNAP-AOA-3 provides a single channel of digital-to-analog conversion. The module has a true differential (floating) output that eliminates ground loops and has a nominal output range of 4-20 mA. The module is transformer isolated and optically isolated from other modules and devices, and 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 Logix PLC system, such as ControlLogix, MicroLogix, or CompactLogix.
For a similar module with two channels, see SNAP-AOA-23.
Specifications:
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Input |
12-bit serial data |
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Output |
4 to 20 mA (floating) |
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Span |
16 mA |
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Resolution |
3.9 microamps |
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Response Time |
99.9%/15.98 mA/3 mS |
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DC Common Mode Rejection |
>-120 dB |
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AC Common Mode Rejection |
>-120 dB @ 60 Hz |
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Maximum Operating Common Mode Voltage |
250 V |
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Common Mode Resistance |
>1000 M W |
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Accuracy |
0.1% of span |
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Gain Temperature Coefficient |
50 PPM/ °C |
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Offset Temperature Coefficient |
20 PPM/ °C |
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Module Power Requirements |
5 Volts DC (±0.15 ) @ 140 mA |
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Loop Power Requirements |
10 Volts DC (min) to |
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Max. Loop Resistance |
250 |
350 |
950 |
1350 |
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Max. Loop Resistance formula |
(Loop Voltage – 5) |
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Ambient Temperature: |
-20 °C to 70 °C |
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Humidity |
5-95%, non-condensing |
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Torque, hold-down screws |
4 in-lb (0.45 N-m) |
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Torque, connector screws |
5.26 in-lb (0.6 N-m) |
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Wire size range |
22 to 14 AWG |
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Agency Approvals |
UL, CE, RoHS, DFARS; UKCA |
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Warranty |
Lifetime |
