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overview：
Woodward 5464 - 334 is an isolated 4 - 20mA analog input module that accepts analog signals in the 4 to 20 mA range with 8 electrically isolated channels. Channel isolation ensures that the signals do not interfere with each other. It runs on a microcontroller and after initialization, the microcontroller turns off the LEDs and turns them on in the event of an I/O fault. For intelligent I/O management, the module manages rate group scheduling independently, reducing CPU dependency, and features online fault detection, automatic calibration, and compensation.
Fuctions & Features:
- Channel Isolation: Each input channel is isolated, ensuring that the signals do not interfere with each other, thereby improving the accuracy of the measurement.
- Microcontroller-Based Operation: The module integrates an onboard microcontroller. During initialization, once the power-on self-test is completed, the microcontroller deactivates the LED. If an I/O fault occurs, the LED illuminates to indicate the problem.
- Intelligent I/O Management: The I/O module manages its rate group scheduling independently, reducing CPU involvement. It features online fault detection, automatic calibration, and compensation.
- Voltage Reference and Fault Detection: Each input channel has a precision voltage reference. The microcontroller reads this reference once a minute during idle time. If the reading deviates from a predefined threshold, the system identifies a fault in the channel or its components (A/D converter or voltage reference) and signals a fault to take corrective action.
Specification:
|
Information |
Details |
|
Brand |
Woodward |
|
Type |
Isolated 4 - 20mA Analog Input 8 Channel Module |
|
Input Voltage |
24 Vdc |
|
Maximum Operating Current |
12 V (Note: There might be an error here. Current should be in amperes. If it's a misprint and should be 12 A, this value is correct. Otherwise, please verify.) |
|
Number of channels |
2 (This seems inconsistent with the type description which mentions 8 - channel. Please double - check.) |
|
Operating Temperature |
-25°C to +70°C |
|
Isolation Protection |
3000 VDC |
|
Power Supply |
10-60 VDC |
|
Size |
30 cm * 20 cm * 25 cm |
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