SNAP-AOA-3 SNAP 1-Ch 4-20 mA Current Loop Analog Output Module |
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 MicroLogix or other RSLogix-based PLC
system, such as ControlLogix or CompactLogix.
For a similar module with two channels, see SNAP-AOA-23.
Input | 12-bit serial data (each channel) | |||
Outputs | 4 to 20 mA (floating) | |||
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 M W | |||
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) @ 140 mA | |||
Loop Power Requirements | 10 Volts DC (min) to 32 Volts DC (max) | |||
Max. Loop Resistance (Ohms) @ Loop Supply | 250 10V | 350 12V | 950 24V | 1350 32V |
Max. Loop Resistance formula | (Loop Voltage - 5) 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 |
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