Product Core Brief
- Model: F3NC01-0N
- Brand: YOKOGAWA
- Series: FA-M3 PLC
- Core Function: Dedicated high-speed counter module for capturing encoder and pulse signals in FA-M3 PLC systems.
- Product Type: FA-M3 Dedicated Counter Module
- Key Specs: Up to 500 kHz counting | 32-bit counter | Supports up/down, pulse/direction, and phase-difference modes
- Condition: New Surplus / OEM Original
Key Technical Specifications
- Part Number:
- Product Type: Dedicated Counter Module for FA-M3 PLC
- Counter Width: 32-bit
- Maximum Counting Frequency: 500 kHz
- Counting Modes: Up/down counting, reversible counting, pulse/direction, phase-difference input
- Encoder Compatibility: Incremental encoders; compatible with rotary encoders and linear scales
- Typical Applications: Workpiece counting, motor speed measurement, mechanical displacement/position detection
- Operating Temperature: -10 °C to 60 °C
- Mounting: FA-M3 base module slot
- System Compatibility: YOKOGAWA FA-M3 series PLC racks
- Configuration: Parameter setup via FA-M3 engineering software
- Explosion Protection: None (standard industrial installation)
Product Introduction
This F3NC01-0N is a dedicated counter module for the YOKOGAWA FA-M3 PLC. It captures pulse signals from rotary encoders, linear scales, and other pulse-output devices, then delivers counted values to the CPU for position detection, speed measurement, and quantity tracking.
The 500 kHz hardware counter keeps counting accurate even when the PLC scan cycle is busy. That makes it useful for packaging lines, conveyor counting, and motion-feedback applications where missed pulses can cause scrap or positioning errors.
QA & Testing SOP
- Label and identity check: Verify “F3NC01-0N” marking, lot/serial data, and connector condition.
- Connector pin inspection: Check the front connector and backplane contacts for bent pins, oxidation, or contamination.
- Mechanical seating check: Confirm the module seats cleanly in the FA-M3 base without excessive force.
- Power-up recognition test: Install into a verified FA-M3 rack, apply power, and confirm the CPU recognizes the module.
- Counter function check: Where test equipment is available, inject a low-frequency pulse signal and verify counted values and mode response.
All units are handled with ESD-safe packaging and labeled with received condition, inspection date, and test status.
Installation Pitfalls & Guide
- ❗ Verify encoder wiring before power-up. Wrong A/B phase wiring or incorrect voltage levels can produce reverse counting or false pulses.
- ❗ Do not force the front connector. Misaligned encoder cables are a common source of intermittent counter faults.
- ❗ Confirm counting mode in software. Pulse/direction, up/down, and phase-difference modes must match the encoder output type.
- ❗ Check shielding and grounding. Unshielded encoder cables near VFDs or contactors can introduce noise into high-speed counts.
Replacement steps:
- Power down the FA-M3 rack and verify lockout/tagout.
- Remove the failed counter module and disconnect the encoder cable.
- Seat the F3NC01-0N firmly and reconnect the encoder wiring per the correct pinout.
- Power up, confirm module recognition, and validate counting with live encoder input.
Technical FAQ
Wes do?
It is a dedicated high-speed counter module for FA-M3 PLCs, used to count encoder and pulse signals for position, speed, and quantity measurement.
What is the maximum counting speed?
Up to 500 kHz with a 32-bit counter, suitable for most industrial encoder interfaces.
Can it work with absolute encoders?
It is primarily designed for pulse/phase-difference encoder inputs. Absolute encoder compatibility depends on the output type and interface; confirm the encoder signal format before installation.
Is it compatible with my FA-M3 rack?
Yes, if the system uses a standard FA-M3 base module and CPU. Always verify slot availability and engineering software support.
Do you test these before shipping?
Surplus stock is visually inspected, connector-checked, and rack-tested where a compatible FA-M3 setup is available. Any limitations are disclosed per lot.
