Remote Module (RS-485),16DI YA-1051

A-1051 RS485 Modbus Remote IO Unit is a robust and reliable industrial module designed for expanding digital input capacity in automation and control systems.

With 16 optically isolated digital inputs, it ensures accurate signal detection while protecting control systems from electrical noise, ground loops, and voltage surges. The unit supports both Modbus RTU and Modbus ASCII protocols, enabling seamless integration with PLCs, SCADA systems, and industrial controllers.

Built with industrial-grade protection, including 5000V isolation and surge/EFT/ESD protection, the A-1051 delivers stable performance in demanding environments such as factories, energy systems, and process automation plants.

Key Features

• 16 × Isolated Digital Inputs
• RS485 Modbus RTU / Modbus ASCII communication
• High isolation protection (5000V DC)
• LED status indication for each input channel
• Configurable fail-safe output states (power-up & communication failure)
• Input signal compatibility: 5–30VDC logic
• High noise immunity with optical isolation

Technical Specifications

• Model: A-1051
• Digital Inputs: 16 × isolated DI
• Input Logic Levels:
  • Low: <1VDC
  • High: 5–30VDC
• Input Frequency: 10Hz
• Communication Interface: RS485
• Protocols: Modbus RTU / Modbus ASCII
• Baud Rate: 1200–115200 bps
• Isolation Voltage: 5000V DC
• Power Supply: 10–30VDC / 24VAC
• Operating Temperature: -20°C to +75°C
• Protection: Surge, EFT, ESD
• Mounting: DIN rail / panel mount