Name: Mitsubishi R28TB | Relay terminal block module | R04CPU | SUNSHINE XIHE
Brand: 其他
Price: 742.00 USD
Availability: InStock

Description

Mitsubishi R28TB Product Specification

Product Overview

The Mitsubishi R28TB is a high-reliability relay terminal block module designed for use with Mitsubishi’s FX2N series programmable logic controllers (PLCs). As a critical component of the FX2N automation platform, this module serves as an interface between the PLC and field devices, enabling safe and efficient control of inductive loads such as motors, solenoids, and contactors. Engineered by Mitsubishi Electric, a global leader in industrial automation, the Mitsubishi R28TB is valued for its compact design, robust performance, and seamless integration with Mitsubishi’s ecosystem of control products.

Featuring 28 single-pole relay outputs, the Mitsubishi R28TB provides electrical isolation between the PLC’s digital outputs and high-power field devices, protecting the controller from voltage spikes and mechanical wear. Each relay is rated for 250V AC/30V DC and 2A current, making it suitable for a wide range of industrial applications. The module’s plug-and-play design allows for quick installation on a DIN rail, reducing setup time in control panels. By extending the FX2N PLC’s output capabilities, the Mitsubishi R28TB empowers engineers to design flexible, scalable automation systems that adapt to changing production requirements.

In industrial automation systems, the Mitsubishi R28TB acts as a vital link between the control layer and the physical plant floor. Its relay outputs provide the necessary switching capacity to drive actuators in manufacturing lines, packaging equipment, or process control systems. The module’s rugged construction, withstanding operating temperatures from 0°C to 55°C and humidity levels up to 85% non-condensing, ensures reliable performance in harsh environments. By combining durability with ease of use, the Mitsubishi R28TB helps minimize downtime and maintenance costs, making it a preferred choice for 中小型 (small to medium-sized) automation projects.

Technical Specifications

Parameter Name	Parameter Value
Product Model	Mitsubishi R28TB
Manufacturer	Mitsubishi Electric
Product Type	Relay Terminal Block Module
Number of Relays	28 (single-pole)
Rated Voltage	250V AC / 30V DC
Rated Current	2A per relay
Contact Resistance	≤100mΩ
Insulation Resistance	≥100MΩ (500V DC)
Mechanical Life	≥5,000,000 operations
Electrical Life	≥100,000 operations (at rated load)
Physical Dimensions	100 mm (W) × 86 mm (H) × 55 mm (D)
Weight	0.3 kg
Installation	DIN rail mounting (35mm standard)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C to 70°C
Humidity	5% to 85% non-condensing

R28TB

Main Features and Advantages

Enhanced Electrical Isolation: The Mitsubishi R28TB provides galvanic isolation between the PLC and field devices, protecting the control system from electrical noise and transient voltage surges. This feature is critical in environments with high-power machinery, ensuring stable operation and prolonging the lifespan of the PLC.

High-Density Output Design: With 28 relay outputs in a compact form factor, the module maximizes space efficiency in control panels, ideal for applications where panel real estate is limited. Its modular design allows for easy replacement or expansion, supporting scalable automation architectures.

Wide Voltage and Current Range: The relays’ compatibility with both AC and DC voltages, along with a 2A current rating, makes the Mitsubishi R28TB suitable for diverse load types, from low-voltage DC solenoids to high-voltage AC motors. This versatility reduces the need for multiple specialized modules, streamlining inventory and maintenance.

Rugged Industrial Construction: Built to withstand vibration (10–55 Hz, 0.5mm amplitude) and shock (15G, 11ms), the module ensures reliable performance in harsh industrial settings. Its flame-retardant housing complies with UL 94 V-0 standards, enhancing safety in fire-prone environments.

User-Friendly Interface: The module’s terminal blocks feature clear labeling and easy-access terminals, simplifying wiring and troubleshooting. LED indicators for each relay show operational status at a glance, reducing diagnostic time and improving system maintainability.

R28TB

Application Areas

The Mitsubishi R28TB is widely deployed in industries requiring reliable switching of inductive loads:

Manufacturing and Assembly Lines:
- Controls conveyor belts, pneumatic actuators, and robotic arms in automotive, electronics, and food processing plants.
- Enables precise coordination of machinery by providing isolated relay outputs for start/stop commands and safety interlocks.
Packaging and Material Handling:
- Drives motors and solenoids in packaging machines, ensuring accurate product sorting, sealing, and labeling.
- Supports high-cycle applications, such as filling stations or palletizers, with its long mechanical and electrical life.
Process Control and Utilities:
- Manages pumps, valves, and compressors in water treatment plants or chemical processing facilities.
- Provides fail-safe switching for emergency shutdown systems, leveraging its electrical isolation and rugged design.
Building Automation:
- Controls HVAC systems, lighting, and security systems in commercial buildings.
- Integrates with Mitsubishi PLCs to create centralized control solutions for energy management and occupant comfort.

Installation and Maintenance

Pre-installation Preparation:
Before installing the Mitsubishi R28TB, ensure the following:

Verify the power supply voltage matches the module’s requirements and that all field devices are disconnected from power.
Mount the module on a 35mm DIN rail in a well-ventilated control panel, allowing at least 20mm of clearance for heat dissipation.
Use stranded or solid copper wire (14–22 AWG) for terminal connections, ensuring secure tightening to prevent loose contacts.

Maintenance Recommendations:

Regularly inspect terminal connections for signs of wear or overheating, particularly in high-current applications.
Clean the module’s exterior with a dry cloth to remove dust and debris, avoiding the use of harsh chemicals that may damage the housing.
Test relay operation periodically using a multimeter to check for contact resistance or failure, replacing faulty relays as needed.
Update firmware for compatible PLCs to ensure optimal compatibility with the Mitsubishi R28TB, following Mitsubishi’s recommended procedures.
R28TB

Product Warranty

Our company provides a one-year quality warranty for the Mitsubishi R28TB, covering hardware defects arising from non-human causes. During the warranty period, we will replace any module exhibiting abnormal performance or functional failure at no additional cost. For discontinued models or urgent repair needs, our global supply chain network enables rapid fulfillment of spare parts requests, minimizing downtime and supporting the continuous operation of your industrial systems. We stand behind the reliability of our products and are committed to delivering exceptional service to meet your automation needs.

Note: This product description is based on technical data from Mitsubishi Electric and industry applications. For detailed specifications or installation guidelines, refer to the official product manual or contact our technical support team.

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Mitsubishi R28TB | Relay terminal block module | R04CPU