I. Basic Information

Compatible System: YASNAC I80 / I80M (must be paired with FC250/FC251 mainboard)

Assembly Backplate: JANCD-FC001 (standard backplate for I80, single slot)

Board Size: Semi-long board (same as FC300B, approximately 235×140mm)

Power Supply: DC 24V ±10%, approximately 0.8A

Version: FC400 (Rev.A02 is the final version)

II. Core Specifications (I/O Points)

1. Input (IN): 32 points

Voltage: DC 24V, NPN/PNP compatible (sink/source optional)

Purpose: Limit switches, proximity switches, buttons, emergency stop, tool signals, etc.

Response Time: ≤1ms

2. Output (OUT): 32 points (transistors)

Voltage: DC 24V, maximum load 0.5A / point

Purpose: Relay coils, solenoid valves, indicator lights, alarm lights, etc.

Protection: Each point has self-recovery fuse, overload / short-circuit protection

3. Interfaces

CN40: I/O terminal block (32IN/32OUT, screw connection)

CN20: System bus (connects to the backplate, communicates with FC250/FC251)

LED: Power, bus, input/output status lights, intuitive diagnosis

III. FC400 vs FC410 (Standard Board vs Expansion Board) Table

Comparison item FC400 (standard I/O board) FC410 (extended I/O board)

I/O points 32IN / 32OUT 64IN / 64OUT (doubled)

Board size Short half-board (235mm) Full-length board (267mm)

Application scenarios Standard machine tools (processing centers / lathes) Large machine tools, automation lines, multi-station equipment

Combination limit Up to 2 FC400 boards Up to 2 FC410 boards, or 1 FC400 + 1 FC410

Common combination FC250/FC251 + FC400 (basic) FC251 + FC410 (high-end, sufficient points)

Four. Compatibility and combination (required combinations)

Main control board: JANCD-FC250 (standard) / FC251 (high-end)

I/O board:

Basic configuration: 1 FC400 (32/32 points, meets the requirements of ordinary machine tools)

Extended configuration: FC400 + FC410 (96/96 points, for large equipment)

Feed / spindle board: FC300B (3-axis feed), FC310 (spindle)

Backplane: JANCD-FC001

Five. Common faults

Input no signal: CN40 wiring loose, 24V power supply abnormal, input points burned out

Output does not act: Output point overload burned out, load short circuit, wiring error

Bus alarm (A.400): CN20 backplane contact failure, bus chip failure

LED off: Backplane 24V power supply missing, board card fuse blown

Six. Application scenarios

I80 standard machining center / CNC lathe: Standard I/O board is equipped, meeting the signal requirements of regular machine tools

Small automation equipment: 32/32 points are sufficient for controlling solenoids, cylinders, sensors

Renovation of old machines: Directly replace the damaged FC400, no need to modify the program

Combined expansion with FC410: Large machine tools, multi-station production lines, special equipment