The F3YD08-7A is a member of the Yokogawa FA-M3 series, a PLC family recognized for fast processing and stable field control. Specifically, this unit is a sink-type (current-sinking) transistor output module, so it pulls the connected load toward the negative rail when a point turns on. Automation engineers often choose this model for driving DC relays, solenoid valves, and high-current lamp banks. Photocoupler isolation separates field wiring from internal logic, protecting the CPU against noise and transient voltage spikes.
The F3YD08-7A carries eight output channels on a single common line. Each point supports a continuous load current of 2 A, while the shared common handles up to 8 A in total. Rated load voltage is 12-24 VDC. Response time is 1 ms maximum for both OFF-to-ON and ON-to-OFF transitions, which keeps the module synchronized with fast machine cycles. Additionally, the ON voltage drop is limited to 0.5 VDC, reducing heat inside the control cabinet. Off-state leakage current stays below 0.1 mA, so connected devices will not false-trigger during idle periods.
Isolation uses a photocoupler rated at 1500 VAC for one minute between external terminals and internal circuitry. Furthermore, an active clamp circuit acts as the built-in surge protector, absorbing inductive kickback from relays and solenoids. For strongly inductive loads, adding a surge suppressor on the load side remains good practice.
The F3YD08-7A draws 80 mA from the 5 VDC backplane bus. A separate external supply of 12-24 VDC at 10 mA powers the output driver circuit. At 130 g, the unit is compact and simple to handle during panel build. Field wiring connects through a 10-point terminal block with M3.5 screws, which holds ring terminals securely under vibration.
Operating temperature ranges from 0 to 55°C, and storage is allowed from -20°C to 75°C. Humidity stays within 10 to 90% RH non-condensing during both operation and storage. The surrounding atmosphere must be free of corrosive gases, flammable gases, and heavy dust, because contamination can degrade optical isolation over time.
Power Off: Verify the FA-M3 rack is fully de-energized before inserting the module.
Slot Alignment: Slide the F3YD08-7A along the base unit guide rails until the backplane connector seats firmly.
Wiring: Feed the external 12-24 VDC supply to the common terminal. Wire each load between the positive supply and its output terminal (sink type).
Inductive Load Protection: Fit a flyback diode across DC relay coils or solenoid valves to clamp voltage spikes.
Verification: Restore power and check the per-point LED indicators. Each LED lights when its output turns ON.
YOKOGAWA F3YD08-7A Module × 1
Terminal Block Cover × 1
Anti-Static Protective Bag × 1
Q1: What is the maximum current per common line for the F3YD08-7A?
A1: The common line accepts up to 8 A total across all eight points. Therefore, the combined current of every active output must stay at or below 8 A.
Q2: How does a sink-type output differ from a source-type module?
A2: A sink-type output connects the load to the negative supply rail when ON. A source-type module instead feeds positive voltage to the load, so wiring polarity differs between the two types.
Q3: Can this module switch 24 VDC solenoid valves directly?
A3: Yes, provided the valve current stays under 2 A per point. However, solenoid valves are inductive, so install a surge suppressor across the coil to protect the output transistor.
Q4: How is the F3YD08-7A shipped?
A4: We ship worldwide through Fedex, UPS, and DHL. Each module travels in anti-static packaging inside a rigid carton for safe transit.
Q5: Does the module need an external power supply?
A5: Yes. The backplane provides 5 VDC logic power, but the output circuit requires an external 12-24 VDC source at 10 mA to operate.
| Brand Name | |
| Model No. | F3YD08-7A |
| Product Type | Output Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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