Schneider Electric NW-RR85-001 Modbus Plus Repeater Assembly

Product Overview

A reliable network repeater arrives as the NW-RR85-001 from Schneider Electric. This device belongs to the Modicon Quantum series for industrial networking. The NW-RR85-001 serves as a Modbus Plus electrical repeater assembly. Engineers use this repeater to extend communication distances in networked systems. Consequently, the NW-RR85-001 enhances signal strength across long cable runs. The unit operates efficiently at dual voltage ranges for global compatibility. Furthermore, it features two communication ports for flexible network topologies.

Technical Specifications

Power Specifications

The NW-RR85-001 accepts dual voltage ranges for worldwide installation. Voltage range options include 110-120V AC for North American applications. Alternatively, the 220-240V AC range suits European and Asian installations. Thus, the NW-RR85-001 adapts to various electrical systems without modification. Voltage class is rated at 100V for reference purposes. The repeater automatically accepts either range within its design specifications.

Proper power connection requires attention to local electrical codes. Always verify the supply voltage matches your specific NW-RR85-001 configuration. Therefore, consult the product label for exact voltage requirements. The unit draws moderate current for reliable repeater operation.

Communication Capabilities

The NW-RR85-001 features two communication ports for network connectivity. Each port uses coaxial cable as the transmission medium. This cable type provides excellent noise immunity for industrial environments. Thus, the NW-RR85-001 maintains signal integrity across extended distances. The repeater regenerates Modbus Plus signals to overcome cable length limitations.

Modbus Plus protocol support ensures compatibility with Quantum series devices. The repeater extends network segments beyond standard length restrictions. Therefore, large distributed control systems become practical with the NW-RR85-001. Without repeaters, Modbus Plus networks are limited to shorter total lengths.

Physical Characteristics

The NW-RR85-001 features a rack-mounted design for panel installation. Length measures 14.17 inches for standard rack compatibility. Width reaches 10.71 inches, while depth extends to 4.8 inches. Total weight sits at 5.9 pounds (2.68 kg) for robust construction. Thus, the NW-RR85-001 installs securely in control cabinets and equipment racks.

The rack-mounted form factor simplifies organization in large systems. Multiple repeaters can mount side by side in standard 19-inch racks. Therefore, the NW-RR85-001 suits central equipment rooms and control centers. The sturdy construction withstands vibration in industrial environments.

Modbus Plus Network Extension

The NW-RR85-001 addresses a key limitation of Modbus Plus networks. Standard Modbus Plus segments have maximum cable length restrictions. Without repeaters, total network distance remains limited significantly. Thus, the NW-RR85-001 enables much larger physical network installations. Each repeater regenerates and retransmits signals to overcome distance limits.

Multiple repeaters can cascade to extend networks even further. However, each repeater introduces minimal delay to signal propagation. Therefore, plan network topology carefully when using several NW-RR85-001 units. The repeater does not alter protocol addressing or data content.

Installation Guide

Follow these steps to install the NW-RR85-001 correctly.

1. Power Down System: De-energize the network and repeater power supply first.

2. Mount Repeater: Secure the NW-RR85-001 to the rack using four screws.

3. Select Voltage: Verify the voltage selector matches your supply (if applicable).

4. Connect Power: Wire AC supply to the designated power terminals.

5. Attach Coaxial Cables: Connect Modbus Plus cables to both ports.

6. Terminate Properly: Ensure proper termination at network ends.

7. Verify Grounding: Connect the ground terminal to earth ground.

8. Power Up Repeater: Apply AC power to the NW-RR85-001.

9. Test Communication: Verify network connectivity through the repeater.

Important: Never apply DC power to the AC terminals of the NW-RR85-001. Always use proper coaxial cable rated for Modbus Plus networks. The repeater requires adequate ventilation for reliable operation. Finally, verify termination resistors are installed only at network ends.

Typical Applications

The NW-RR85-001 serves multiple network extension applications effectively. Connecting multiple Modbus Plus segments across large facilities is its primary use. The repeater links control rooms with remote equipment locations. Furthermore, it connects I/O drops distributed across long production lines. Thus, the NW-RR85-001 enables centralized control of distributed machinery.

Typical installations include automotive plants and material handling systems. For example, conveyor systems spanning hundreds of meters benefit from repeaters. Similarly, water treatment facilities with distributed pump stations use the NW-RR85-001. Therefore, this repeater suits many large-scale industrial applications.

Environmental Considerations

The NW-RR85-001 operates in standard industrial control room environments. Proper ventilation around the unit supports reliable long-term performance. Avoid installing the repeater in dusty or humid locations without proper enclosures. Thus, locate the NW-RR85-001 in a clean, dry control cabinet.

Operating temperature range follows standard Quantum series specifications. Refer to the product manual for detailed environmental limits. Therefore, maintain adequate cooling if installing multiple repeaters in one rack.

Key Features and Benefits

• Dual Voltage Operation: Accepts 110-120V or 220-240V AC for global use.

• Two Communication Ports: Supports daisy-chain and star network topologies.

• Coaxial Transmission: Provides excellent noise immunity for reliable communication.

• Rack-Mounted Design: Simplifies installation in standard 19-inch equipment racks.

• Modbus Plus Protocol: Extends Quantum series networks without modification.

• Robust Construction: Weighs 2.68 kg for durability in industrial environments.

The NW-RR85-001 delivers reliable Modbus Plus network extension for Quantum systems. Consequently, this repeater enables large distributed control installations worldwide. Its dual voltage capability suits facilities in North America, Europe, and Asia. The coaxial cable interface provides excellent noise immunity for industrial settings. Physical dimensions of 14.17 x 10.71 x 4.8 inches fit standard racks.

Package Contents

• One NW-RR85-001 Modbus Plus repeater assembly

• One installation instruction sheet

• Mounting hardware for rack installation

Frequently Asked Questions (FAQ)

1. What is the purpose of the NW-RR85-001 repeater?

The NW-RR85-001 extends Modbus Plus network distances beyond standard segment limits. It regenerates and retransmits signals between network segments. Therefore, large distributed control systems become practical with this repeater.

2. What type of cable does the NW-RR85-001 use?

The NW-RR85-001 uses coaxial cable as its transmission medium. Standard Modbus Plus coaxial cable works directly with this repeater. Thus, no special cabling is required for installation.

3. Can the NW-RR85-001 operate on both 120V and 240V?

Yes, the NW-RR85-001 accepts both 110-120V and 220-240V AC power. This dual voltage capability suits installations worldwide. Therefore, the same model works in North America, Europe, and Asia.

4. How many ports does the NW-RR85-001 have?

The NW-RR85-001 features two communication ports for network connectivity. Each port connects to a separate Modbus Plus segment. Thus, the repeater links two network segments together.

5. Is the NW-RR85-001 rack-mountable?

Yes, the NW-RR85-001 is designed for rack-mounted installation. It fits standard 19-inch equipment racks securely. Therefore, integration into control rooms and data centers is straightforward.