Configured for high-speed voltage telemetry acquisition in FA-M3 PLC platforms, the Yokogawa F3AD08-5V (F3AD08 Analog Input Module) provides direct physical/electrical execution across industrial backplane networks.
| Parameter | Specification |
|---|---|
| Model | F3AD08-5V |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.12 kg |
| Dimensions | 28.9 x 100 x 83.2 mm |
| Operating Temp | 0 to +55 deg C |
| Power Consumption | ~100 mA (draws from 5 VDC backplane rail) |
| Input Channels | 8 voltage channels |
| Signal Range | 0-5 V DC (selectable 0-10 V DC, -10 to +10 V DC) |
| A/D Resolution | 12-bit analog-to-digital conversion |
| Accuracy | +/-0.2% of full scale |
| Sampling Speed | 1 ms per channel |
| Galvanic Isolation | Photocoupler isolation (channels to system backplane) |
The F3AD08-5V module converts field voltage signals into 12-bit digital values, transferring real-time measurement arrays directly across the internal FA-M3 bus. Onboard photocoupler barriers deliver galvanic isolation between field input terminals and the central processing backplane, preventing severe voltage transients from damaging logic circuits. Furthermore, internal sampling routines execute continuous 1 ms conversion cycles per channel, suppressing high-frequency industrial electromagnetic interference and eliminating localized ground loops without degrading overall scan execution rates.
Q: How does the F3AD08-5V isolate internal logic from field wiring surges?
A: Integrated photocoupler isolation barriers physically separate the 8-channel field wiring terminals from the internal 5 VDC system backplane bus, attenuating common-mode voltage spikes.
Q: What happens if an input signal exceeds the maximum designated voltage range?
A: Onboard diagnostic firmware detects over-range conditions, triggers an internal channel error flag in the system registers, and limits data overflow without interrupting adjacent channel sampling cycles.
Q: Is external power required to operate the analog-to-digital conversion circuits?
A: No, the module draws its operational supply directly from the FA-M3 PLC backplane bus, consuming approximately 100 mA at 5 VDC.
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