Configured for precise analog output conversion in Yokogawa FA-M3 PLC platforms, the Yokogawa F3DA08-5R (F3DA08-5R Analog Output Module) provides direct physical/electrical execution. The module converts internal digital controller signals into proportional voltage and current control loops to actuate field positioning hardware across industrial process systems.
| Parameter | Specification |
|---|---|
| Model | F3DA08-5R |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.2 kg |
| Dimensions | 28.9 x 100 x 83.2 mm |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | 60 mA at 5 VDC (backplane bus); 19.2 to 30 VDC external supply |
| Number of Outputs | 8 channels |
| Output Ranges (Voltage) | -10 to 10 V, 0 to 10 V, 0 to 5 V, 1 to 5 VDC |
| Output Ranges (Current) | 4 to 20 mA, 0 to 20 mA, -20 to 20 mA DC |
| Output Resolution | 12-bit D/A conversion |
| Output Conversion Speed | 2 us + 2 us x (number of updated channels) |
| Output Impedance | 0.5 ohm max (Voltage); 3 M ohm max (Current) |
| Isolation | 500 VDC for 1 min (internal circuitry to output channels) |
| External Connection | 18-point terminal block with M3.5 screws |
| D/A Scaling Range | Settable within -30000 to 30000 digital counts |
The module provides full integration with 4-20 mA HART loop protocol environments and high-density DCS actuation loops. It features configurable channel-to-channel operational parameters and specialized software scaling between -30000 and 30000 counts for direct calibration against field equipment. Each channel accommodates selectable voltage or current signals while maintaining high output impedance values up to 3 M ohm in current mode to ensure precise current loop regulation. Individual channel fallback behaviors can be set independently to hold or clear values during CPU failure events.
Q: What happens to the channel outputs if the host CPU enters a fault state?
A: The CPU fail-time output response can be configured independently for each channel to either hold the last valid analog value or reset to a predetermined safe output state.
Q: Are individual output channels isolated from one another?
A: The module provides digital isolation coupler protection rated at 500 VDC for 1 minute between internal backplane logic and output terminals. However, individual output channels share a common negative potential and are not isolated from each other.
Q: What are the load impedance constraints for voltage and current modes?
A: For voltage mode, the minimum allowable load resistance is 1 k ohm for -10 to 10 V or 0 to 10 V ranges, and 500 ohm for 0 to 5 V or 1 to 5 V ranges. For current mode, allowable load resistance spans up to 600 ohm max.
Mount the module securely into the designated slot of the FA-M3 chassis backplane prior to applying logic power. Route all field wires cleanly to the front-mounted 18-point terminal block and tighten the M3.5 terminal screws to recommended torque limits to avoid high-resistance junction points. Maintain dedicated separation between field wiring conduits and high-voltage power cables inside cabinet wireways. Connect all signal cable shielding to a designated panel earth ground at a single point to mitigate loop noise and external noise coupling on sensitive analog channels.
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