jancd-fc420
Description
1. General Description
2. Basic Specifications
Applicable system: YASNAC I80 / I80M (requires FC250/FC251 CPU board)
Backplane: JANCD‑FC001 (standard I80 backplane, 1 slot)
Board size: Full‑length (≈267 × 140 mm, same as FC410/FC310)
Power supply: DC 24V ±10%, approx. 1.5 A
Operating temperature: 0 to +45°C
Storage temperature: −20 to +60°C
Revision: Final revision A02
3. I/O Configuration (High‑Density)
Inputs (IN): 96 points
Signal level: DC 24V, sink/source selectable (NPN/PNP compatible)
- 用途：Limit switches, proximity sensors, pushbuttons, E‑stop, tool sensors, clamps, pallets
Response time: ≤1 ms
Outputs (OUT): 96 points (transistor)
Voltage: DC 24V, max 0.5 A per point
- 用途：Solenoids, relays, indicators, alarms, cylinders, motor start signals
Protection: Self‑resetting fuse per point, overload/short‑circuit protection
Connectors
CN42: I/O terminal block (96IN / 96OUT, screw terminals, 3 rows)
CN20: System bus (to backplane, communication with FC250/FC251)
LEDs: Power, bus status, IN/OUT channel status for diagnostics
4. FC420 vs FC410 vs FC400
| Item | FC420 (High‑Density) | FC410 (Expansion) | FC400 (Standard) |
|---|---|---|---|
| I/O points | 96IN / 96OUT | 64IN / 64OUT | 32IN / 32OUT |
| Board size | Full‑length | Full‑length | Half‑length |
| I/O density | Very high | High | Medium |
| Max per system | 1 board | 2 boards | 2 boards |
| Typical use | 5‑axis, large machines, auto lines | Mid‑size machines | Standard lathes/machining centers |
5. System Compatibility & Combinations
Mandatory pairing
CPU board: JANCD‑FC250 (standard) or FC251 (high‑grade)
Backplane: JANCD‑FC001
Recommended configurations
High‑density setup: FC251 + 1×FC420 (max I/O for I80)
Mixed setup: FC251 + FC420 + FC400 (128IN/128OUT total)
Axis boards: FC300B (3‑axis feed), FC310 (spindle)
Limitations
Cannot be used standalone (depends on FC250/FC251 for power and bus)
Occupies 1 full slot on FC001 backplane
I80 system limit: 1×FC420 maximum (due to high bus load)
6. Common Faults & Alarms
A.420 Bus error: CN20 loose, backplane contact failure, bus chip fault
No input signals: CN42 wiring loose, 24V supply fault, input channel burnout
Outputs not activating: Overload/short circuit, load fault, wiring error
All LEDs off: Backplane 24V missing, internal fuse blown
Partial channel failure: Terminal block oxidation, bent pins, internal trace damage
7. Applications
Large 5‑axis machining centers (massive I/O for clamps, pallets, tools)
Multi‑station transfer machines (high sensor/actuator count)
Automated production lines (machine + material handling + inspection)
High‑end turn‑mill centers (dual spindle + multiple turrets)
Legacy machine upgrades (max I/O expansion without full CNC replacement)
Get a Quote