I. Product Introduction

1. Core Positioning

High-density I/O expansion board, specially designed for Yasnac LX3 CNC/PLC.

Used for machine tools and large-scale automated production lines, handling a large number of digital signals such as sensors, solenoid valves, safety circuits, PLC interlocks, etc.

2. Key Specifications (I020-03)

Input Points: 112 points (DC24V, NPN/PNP compatible)

Output Points: 64 points (transistors, DC24V, 0.5A per point)

Interfaces: Multiple groups of 50-pin flat cable sockets (CN1 to CNx)

Power Supply: Backplane DC5V + external DC24V (≥3A)

Temperature: 0℃ to 45℃ (no condensation)

Humidity: 10% to 90% RH (no condensation)

Vibration: ≤0.5G

Weight: Approximately 0.71 kg

3. Main Functions

✅ Massive I/O Expansion: 112 inputs + 64 outputs, meeting the point requirements of large equipment.

✅ Safety Signal Processing: Emergency stop, safety door, limit switch, etc., hard logic monitoring.

✅ Peripheral Integration: Machine tool sensors, fixtures, cooling / lubrication system control.

✅ Status Diagnosis: On-board LED indicators, real-time display of each I/O status.

✅ System Bus Communication: High-speed data interaction with LX3 main control board.

II. User Manual (Core Points)

1. Installation (LX3 Control Cabinet)

Slot: LX3 dedicated I/O expansion slot (such as SLOT04/SLOT05).

Fixation: 4 M3 screws, tightening torque 0.8 to 1.0 N·m.

Compatibility: Only compatible with Yasnac LX3 system, cannot be used in XRC/ERC robot cabinets or DX series.

2. Wiring Specifications

Input (IN0 to IN111):

Common terminal: COM+ (24V)

Signal terminal: Connect NPN sensors / switches negative pole (low level valid).

Output (OUT0 to OUT63):

Common terminal: COM- (0V)

Signal terminal: Connect load negative pole, load positive pole connects to 24V+.

⚠️ Output Limitation: Single path ≤0.5A, total board current ≤3A,严禁 overload.

3. I/O Address Allocation (LX3 System)

General Input： IN0 to IN111 → Address X000 to X111

General Output： OUT0 to OUT63 → Address Y000 to Y063

View / Force： LX3 programmer → Input / Output → Expansion I/O.

4. Fault Troubleshooting

Input no response： Check DC24V power supply， COM terminal wiring， sensor polarity.

Output does not act： Confirm load wiring， COM- terminal connects to 0V， program logic / ladder diagram.

Communication error： Check board card gold fingers， backplane slot， system firmware version match.