Product Core Brief

• Model: F3NC02-0N
• Brand: YOKOGAWA
• Series: CENTUM CS 3000 / F3 Series I/O
• Core Function: Single-axis positioning module for pulse-train motion control within the CENTUM CS 3000 FCS.
• Product Type: DCS Positioning / Motion Control Module
• Key Specs: 1 axis | 250 kpps max pulse rate | F3 Series I/O slot
• Condition: New Surplus / Tested

Key Technical Specifications

• Module Type: Positioning Module (F3NC series)
• Suffix Code: -0N
• System Compatibility: CENTUM CS 3000 FCS (F3 Series I/O)
• Number of Axes: 1 axis
• Maximum Pulse Rate: 250 kpps
• Control Output: Pulse-train positioning output
• Installation: F3 Series I/O slot in Field Control Station
• Typical Application: Servo/stepper drive interface, valve positioning, indexing control
• Series Family: F3NC positioning module family
• Condition: Surplus / Tested

Product Introduction (No Fluff)

The F3NC02-0N is a single-axis positioning module from the YOKOGAWA F3 Series I/O lineup, used in CENTUM CS 3000 Field Control Stations. It provides pulse-train positioning control for one axis at up to 250 kpps, allowing the FCS to drive servo or stepping motor interfaces directly from the DCS I/O rack.

For plants running legacy CS 3000 systems with motion or positioning tasks—such as valve actuators, indexing tables, or simple single-axis drives—this module is a targeted replacement when the original card fails or spare inventory runs low. Because F3NC series modules are increasingly hard to source new, verified surplus stock helps keep existing motion loops operational without migrating to a separate motion controller.

QA & Testing SOP (Dynamic & Transparent)

Positioning modules get checked differently than standard I/O cards because pulse integrity matters:

1. Visual & authenticity check: Inspect housing, label, connector pins, and solder joints for rework, corrosion, or counterfeit indicators.
2. Connector & pin inspection: Verify the external motion connector and backplane pin alignment—bent pins or oxidized contacts are a common failure point on older F3 positioning modules.
3. Bench power-up test: Apply rated power on an OEM-compatible F3 test rack and confirm module initialization without fault LEDs.
4. Pulse output verification: Confirm the module generates pulse-train output at the expected rate and maintains stable operation under bench conditions.
5. ESD-safe packaging: After testing, the unit is sealed in anti-static shielding with moisture barrier protection for shipment.

Installation Pitfalls & Guide (Engineer to Engineer)

❗ Do not confuse F3NC02-0N with F3NC11-0N or F3NC12-0N. The F3NC02-0N is a 1-axis positioning module; the F3NC11-0N is also 1-axis 250 kpps; the F3NC12-0N is 2-axis 250 kpps. Always match the exact suffix and axis count to your application.

❗ Check pulse rate compatibility with the drive. 250 kpps is the module’s maximum. If your servo or stepper drive expects a different pulse rate, the positioning loop will not track correctly.

❗ Grounding and shielding are critical. Pulse-train signals are susceptible to noise. Poor grounding between the FCS and the drive can cause missed pulses, position drift, or intermittent faults.

❗ Verify backplane slot compatibility. F3 modules must be installed in the correct FCS slot type. Forcing a module into the wrong slot can damage backplane pins.

Replacement steps:

1. Pre-install: Confirm slot position, axis configuration, and backplane power state.
2. Removal: Power down the FCS slot if possible; release the module latch and withdraw straight out.
3. Install: Align pins carefully, seat fully, and secure the latch. Connect motion cabling with proper shielding.
4. Power-on test: Restore power, verify LED status, and confirm pulse output and positioning response with the drive.

Technical FAQ

What does the F3NC02-0N do? It is a single-axis positioning module for the YOKOGAWA F3 Series I/O, used in CENTUM CS 3000 FCS to provide pulse-train motion control at up to 250 kpps for one axis.

What is the difference between F3NC02-0N and F3NC12-0N? The F3NC02-0N is a 1-axis positioning module, while the F3NC12-0N supports 2 axes, both at up to 250 kpps. If your application requires two axes from one module, you need the F3NC12-0N.

Is this compatible with RS-232 or Ethernet motion drives? No. The F3NC02-0N outputs pulse-train positioning signals, not serial or Ethernet-based motion commands. It interfaces with drives that accept pulse/direction or pulse/quadrature inputs.

Is this module still available from Yokogawa? The F3 Series I/O is a legacy platform. New OEM stock may be limited or discontinued. Surplus and tested units are often the most practical option for maintaining existing CS 3000 motion control applications.

What is the warranty? Surplus and tested units typically carry a 12-month functional warranty. Confirm exact terms at checkout, as condition varies by lot.