Yokogawa F3YD18-0N FA-M3 Transistor Output Module

Hardware Specifications

Yokogawa FA-M3 Output Circuit Characteristics

The F3YD18-0N uses Yokogawa FA-M3 transistor output architecture for direct switching of external DC devices. The module applies sink-type NPN output circuits, where the transistor output connects the load return path to 0 VDC.

In addition, the photocoupler isolation separates the CPU backplane logic from field output circuits. This design reduces electrical interference transfer and supports stable operation in industrial control cabinets.

The module provides channel-level LED status indication. Therefore, maintenance personnel can verify output states during commissioning and troubleshooting without additional diagnostic equipment.

Frequently Asked Questions

Q: Does the Yokogawa F3YD18-0N support analog output signals?
A: No. The F3YD18-0N is a digital transistor output module designed for ON/OFF DC load switching only.

Q: What type of external devices can connect to the F3YD18-0N outputs?
A: The module supports DC loads such as relay coils, solenoids, indicators, and small actuators within the specified voltage and current ratings.

Q: Does the module provide electrical isolation between the PLC CPU and field devices?
A: Yes. The output circuits use photocoupler isolation between the FA-M3 internal control bus and external output wiring.

Field Installation Guidelines

Install the F3YD18-0N only on compatible Yokogawa FA-M3 base units. Confirm that the module is correctly seated on the backplane connector before applying power.

Use separate cable routing for output wiring and high-voltage power cables to reduce electromagnetic interference. Connect field devices according to the sink-type NPN output configuration and verify polarity before energizing the circuit.

Ground the control cabinet according to the system grounding design. Maintain proper shielding practices for cables installed near high-noise switching equipment.

Before operation, check each output channel using the FA-M3 programming environment and confirm that external devices respond to the configured output commands.