Schneider LMC078CECS20T Modicon LMC078 Motion Controller

Overview

Core Hardware Specifications

1. Power & Physical Parameter

• Supply voltage: 24VDC (20.4–30V DC), power consumption 500mA
• Mounting: Vertical cabinet installation, IP20 protection
• Dimension: W45 × D220 × H230mm, weight 2.2kg
• Memory: 512MB RAM + 128MB NVRAM, support 512MB SD card for program/log storage
• Data retention: 3V lithium battery for program & variable backup during power loss
• Certification: CE, UL508, CSA C22.2 No.142, RoHS compliant

2. Onboard Digital I/O (20 points total)

• 12× 24VDC sink-type digital inputs: 8 general DI + 4 high-speed capture inputs (for position latch, encoder signal capture)
• 8× 24VDC source transistor outputs: Single point max 500mA, total output peak 2A, built-in short-circuit protection
• Input filter time adjustable: 0.1~4290ms, anti-interference for workshop environment

3. Motion Axis & Bus Performance

• Max controllable axes: Up to 24 servo axes via SERCOS III bus
• Axis synchronization cycle: Minimum 4ms for 24 axes; 1ms for 8 axes, 2ms for 16 axes
• Motion bus: SERCOS III real-time motion bus for servo drive synchronization
• Other communication interfaces:
  • Dual Ethernet ports (Modbus TCP, machine HMI, upper MES/SCADA connection)
  • CANopen fieldbus for peripheral sensors, remote I/O
  • RS232 serial port + USB local commissioning port
  • Built-in 15pin encoder interface (support incremental / SSI absolute encoder for spindle master axis)

4. Programming Environment

• Programming software: SoMachine / SoMachine Motion
• Supported IEC61131-3 languages: Ladder LD, Structured Text ST, FBD, SFC, IL
• Built-in complete motion control function library

Key Motion Control Functions

1. Basic positioning: Absolute / relative positioning, speed/torque closed-loop control
2. Multi-axis synchronization: Electronic gear, electronic cam, virtual master axis
3. Interpolation: Linear & circular interpolation, G-code CNC trajectory processing
4. High-speed capture: Hardware latch input for flying shear, print mark registration
5. Cam switch output, follow-up cutting, spindle positioning synchronization

Main Features

1. All-in-one design: Standard PLC logic + high-precision multi-axis motion, save separate PLC + motion card cost
2. SERCOS III real-time bus, ultra-low jitter, stable high-speed synchronous operation
3. Native high-speed capture inputs, perfect for printing, cutting, packaging registration
4. Expandable architecture: Extend remote I/O via CANopen, expand axes via SERCOS III expansion
5. Front LCD display & operation keys, real-time view axis fault, communication status, I/O status without software
6. SD card one-click program backup & recovery, convenient equipment batch debugging

Applications