1. General Description

2. Basic Specifications

• Applicable system: YASNAC I80 / I80M (requires FC251 CPU board exclusively)

• Backplane: JANCD‑FC001 (1 full slot)

• Board size: Full‑length (≈267 × 140 mm)

• Power supply: DC 24V ±10%, approx. 2.0 A

• Operating temperature: 0 to +45°C

• Storage temperature: −20 to +60°C

3. I/O Configuration (Max‑Density)

Inputs (IN): 160 points

• Signal level: DC 24V, sink/source selectable (NPN/PNP compatible)

• Usage: Limit switches, proximity sensors, E‑stop, safety doors, tool sensors, clamps, pallets, fixture sensors

• Response time: ≤0.8 ms (high‑speed sampling)

Outputs (OUT): 160 points (transistor)

• Voltage: DC 24V, max 0.5 A per point

• Usage: Solenoids, relays, valve banks, indicators, alarms, cylinders, motor start signals

• Protection: Self‑resetting fuse per point, overload/short‑circuit protection, surge suppression

Connectors

• CN44: I/O terminal block (160IN / 160OUT, screw terminals, 4 rows)

• CN20: System bus (high‑speed link to FC251)

• LEDs: Power, bus status, IN/OUT channel status, fault diagnostics

4. FC440 vs FC430 vs FC420 vs FC410 vs FC400

5. System Compatibility & Combinations

Mandatory pairing

• CPU board: JANCD‑FC251 (high‑grade) (FC250 not supported)

• Backplane: JANCD‑FC001

Recommended configurations

• Max‑density setup: FC251 + 1×FC440 (320 I/O total, I80 maximum)

• Mixed high‑density setup: FC251 + FC440 + FC400 (384 I/O total)

• Axis boards: FC260 (8‑axis feed), FC310 (spindle)

Limitations

• Cannot be used standalone (depends on FC251 for power and bus)

• Occupies 1 full slot on FC001 backplane

• I80 system limit: 1×FC440 maximum (full bus bandwidth utilization)

6. Common Faults & Alarms

• A.440 Bus error: CN20 loose, backplane contact failure, bus chip overload

• No input signals: CN44 wiring loose, 24V supply fault, input channel burnout

• Outputs not activating: Overload/short circuit, load fault, wiring error, surge damage

• All LEDs off: Backplane 24V missing, internal main fuse blown

• Partial channel failure: Terminal block oxidation, bent pins, internal trace damage

7. Applications

• Large 6‑axis machining centers (max I/O for clamps, pallets, tools, safety interlocks)

• Multi‑station transfer lines (high sensor/actuator count for synchronized motion)

• Fully automated production cells (machine + material handling + inspection + robotics)

• High‑end multi‑spindle turn‑mill centers (dual spindle + multiple turrets + B/C axes)

• Legacy system upgrades (max I/O expansion without full CNC replacement for large machines)