Model Definition

490: Modicon network accessory series code

NAD: Profibus DP connector series

91103: Right-angle connector with integrated terminator

Technical Specifications

Hardware & Interface

Protocol: Profibus DP

Connector: 9-pin D-Sub, right-angle type

Termination resistor: Integrated 120 Ω (permanently enabled)

Cable entry: Side entry

Cable type: Standard Profibus bus cable

Color: Violet

Environmental

Operating Temp: 0 °C to +60 °C

Storage Temp: -25 °C to +80 °C

Relative Humidity: 5% to 95 %, non-condensing

Protection class: IP20

Core Functions

Bus Termination: Provides standard 120 Ω termination for Profibus DP network endpoints

Signal Optimization: Reduces signal reflection and distortion for long-distance communication

Durable Connection: Industrial-grade connector ensures stable physical connection in harsh workshop environments

Quick Wiring: Compact structure for fast on-site installation and wiring

Application Scenarios

End stations of Profibus DP bus network

Connection for Modicon PLCs, remote I/O modules and variable frequency drives

Commissioning and maintenance of legacy Schneider Profibus DP automation systems

Factory production lines with distributed Profibus field devices

Usage & Maintenance

Install this connector only at the first and last nodes of the Profibus DP network

Keep the connector and wiring dry and free from dust or mechanical damage

Check connection tightness regularly to avoid loose contact and communication failure

Do not use this model for intermediate network nodes to prevent communication anomalies