CJ1W-PRM21 PROFIBUS-DP Master Unit for CJ1 PLCs with High-Speed Communication

Product Overview

The CJ1W-PRM21 is a high-performance PROFIBUS-DP Master Unit from Omron's CJ series, designed for seamless integration into industrial automation systems. This advanced communication module enables reliable and high-speed data exchange between Omron CJ-series PLCs and PROFIBUS-DP slave devices, making it ideal for demanding factory automation applications. With its robust construction and precise engineering, the CJ1W-PRM21 ensures stable communication in harsh industrial environments while maintaining optimal performance.

Key Features and Benefits

• High-Speed PROFIBUS-DP Communication: Configurable baud rates from 9.6 kbps up to 12 Mbps for flexible integration with various industrial networks.
• Expanded I/O Capacity: Supports up to 1,440 bytes for both input and output data, enabling comprehensive device connectivity.
• Extensive Slave Connectivity: Capable of connecting to up to 125 PROFIBUS-DP slave devices for large-scale automation systems.
• Compact and Durable Design: Space-saving dimensions (31 × 90 × 65 mm) with a lightweight (200g) aluminum housing for easy installation in control panels.
• Reliable Industrial Performance: Operates in temperatures from 0°C to 55°C with 10-90% non-condensing humidity tolerance.
• Low Power Consumption: Efficient 5V DC operation at just 0.5A typical current draw.
• Standard Warranty: Backed by Omron's 1-year manufacturer warranty for guaranteed quality and reliability.

Industrial Applications

• Factory Automation: Centralized control of production lines with multiple PROFIBUS-DP compatible devices.
• Process Control Systems: Real-time monitoring and control of industrial processes requiring robust fieldbus communication.
• Machine Integration: Seamless connection between PLCs and distributed I/O, sensors, actuators, and variable frequency drives.
• Manufacturing Equipment: Synchronization of automated machinery in automotive, packaging, and material handling applications.
• Building Automation: Integration of control systems in large-scale facility management applications.

Detailed Technical Specifications

Parameter	Specification
Model Number	CJ1W-PRM21 (Omron genuine part)
Communication Protocol	PROFIBUS-DP (Master functionality compliant with EN 50170)
Data Capacity	1,440 bytes input / 1,440 bytes output (maximum configurable)
Transmission Speed	Selectable from 9.6 kbps, 19.2 kbps, 93.75 kbps, 187.5 kbps, 500 kbps, 1.5 Mbps, 3 Mbps, 6 Mbps, 12 Mbps
Network Configuration	Supports up to 125 slave devices per master unit
Physical Dimensions	31 mm (W) × 90 mm (H) × 65 mm (D) (1.22" × 3.54" × 2.56")
Unit Weight	200 grams (7.05 oz)
Power Requirements	5 V DC ±5%, 0.5A typical current consumption
Environmental Ratings	Operating: 0°C to 55°C (32°F to 131°F) / Storage: -25°C to 65°C (-13°F to 149°F)
Humidity Range	10% to 90% relative humidity (non-condensing)
Vibration Resistance	10-57 Hz: 0.075 mm amplitude, 57-150 Hz: 9.8 m/s² acceleration
Shock Resistance	147 m/s² (3 times each in 3 directions)
Warranty Period	1 year manufacturer warranty from date of purchase

System Integration

The CJ1W-PRM21 PROFIBUS-DP Master Unit is designed for direct mounting on Omron CJ-series PLC backplanes, providing a cost-effective solution for adding PROFIBUS-DP master functionality to existing control systems. The unit supports all standard PROFIBUS-DP functions including cyclic data exchange, acyclic communication services, and diagnostic capabilities. Its LED indicators provide clear status monitoring for power, communication, and error conditions, facilitating quick troubleshooting in industrial environments.

Compatibility Information

This unit is compatible with the following Omron PLC series: CJ1G/H-CPU@@H, CJ1G/H-CPU@@, CJ1M-CPU@@, and CJ2M-CPU@@ (where @@ represents various CPU models). When planning your system configuration, please verify compatibility with your specific PLC model and firmware version.