Schneider TWDLCAE40DRF Compact PLC Controller

Basic Overview

• Model: TWDLCAE40DRF
• Power supply: 100–240 VAC single-phase mains
• Total I/O: 40 points (24 digital inputs + 16 mixed outputs)
• Mounting: Standard 35mm DIN rail, IP20 cabinet installation only
• Dimension: 157 × 70 × 90 mm, weight 0.525 kg

Core I/O Configuration

1. Digital Inputs (24 pcs)
    
   24VDC sink/source universal digital inputs, for proximity sensors, limit switches, buttons.
2. Mixed Outputs (16 pcs)
   • 14 × Relay outputs: For solenoid valves, contactors, indicator lights (resistive load switching)
   • 2 × NPN transistor high-speed outputs: Dedicated for high-speed pulse positioning (PWM/PLS)

Communication Interfaces

• 1 × RJ45 Ethernet (10/100M TCP/IP Modbus, BOOTP support)
• 1 × USB port for programming download via PC
• 1 × RS485 Modbus serial port
• 1 expansion slot for extra communication modules (AS-i / RS232 etc.)

Control & Motion Performance

• Program capacity: Max 3000 instruction steps; scan speed: 1ms per 1K instructions
• High-speed counting:
  • 2 channels 32-bit high-speed counter (max 20kHz)
  • 4 channels 16-bit counter (max 5kHz)
• Positioning: 2-channel 7kHz PWM/PLS pulse output for stepping/servo drive control
• Built-in real-time clock RTC, monthly drift ≤30s, battery backup for 30 days data retention
• Internal resources: 128 timers, 128 counters, 256 internal bits, PID closed-loop control function
• 2 onboard analog potentiometers for on-site parameter fine-tuning

Expandability

• Supports up to 7 external I/O expansion modules (digital/analog mixed)
• Compatible with Twido analog modules (TWDAMM series) for 4–20mA / 0–10V signal acquisition
• Supports up to 2 AS-Interface bus slave modules for remote field sensor wiring

Hardware & Protection

• Front LCD small display + multi-status LED indicators (PWR/RUN/ERR/I/O/Ethernet link)
• Screw terminal wiring, replaceable backup battery for RTC and data memory
• Overvoltage, short-circuit internal power protection
• Operating temperature: 0°C ~ +55°C; storage: -25°C ~ +70°C
• Certifications: CE, UL/cUL industrial safety compliance

Programming Software

Typical Application Scenarios

• Packaging machinery, small automated assembly lines
• Conveyor, lifting, sorting equipment control
• HVAC air conditioning, pump & fan group control
• Water treatment small process control, environmental monitoring
• Small printing, textile, food processing standalone machines