Model Definition

490: Modicon network accessory series

NAD: Profibus DP connector category

91103: Profibus DP end connector with terminator

Technical Specifications

Hardware & Interface

Protocol: Profibus DP

Connector Type: 9-pin male SUB-D, elbowed

Termination: Integrated 120Ω terminator (ON)

Color: Violet

Dimensions: 32 mm (H) × 52 mm (W) × 68 mm (L)

Mounting: Cable mount

Compatibility: Modicon Momentum/Premium PLCs, ATV61/71 drives, Lexium 15 motion, TeSys starters

Environmental

Operating Temp: 0 °C to +60 °C

Relative Humidity: ≤95%, non-condensing

Altitude: Up to 2000 m

Atmosphere: No corrosive gases

Core Functions

Bus Termination: Activates 120Ω termination at network ends to prevent signal reflection

Reliable Connection: Robust SUB-D 9 interface for industrial Profibus DP wiring

Network Stability: Ensures proper signal matching at bus endpoints

Application Scenarios

End nodes in Profibus DP networks (PLCs, drives, I/O)

ATV61/ATV71 variable frequency drives with DP communication cards

Modicon Momentum/Premium automation platforms

Lexium motion control systems and TeSys motor starters

Usage & Maintenance

Connect the SUB-D male to the device’s Profibus DP port

Use only at bus start/end stations (terminator ON)

For middle stations, use 490NAD91104 (no terminator)

Inspect connections periodically for tightness and corrosion

Operating humidity ≤95%, non-condensing