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GE IC646MRA700 output module
GE IC646MRA700
GE IC646MRA700 is a high-performance multi-channel relay output module, specifically designed for General Electric (GE)’s RX3i or RX7i PACSystems programmable automation controller platforms. As a critical final execution unit in automated control systems, this module receives low-power control signals from the central processing unit and converts them into high-power electrical outputs. It reliably drives various on-site equipment, such as solenoid valves, contactors, motor starters, indicator lights, and alarm devices. Its core value lies in providing a robust, isolated, and flexibly configurable hardwired control interface for harsh industrial environments.
As a member of the PACSystems series, the GE IC646MRA700 module inherits the platform’s high reliability and modular design essence. It enables high-speed data exchange with the controller via the backplane, ensuring high real-time performance of output responses. The module’s outstanding performance makes it an ideal choice for medium-to-large discrete control applications—especially in scenarios requiring multi-point, high-load outputs—where GE IC646MRA700 delivers an excellent solution to effectively ensure the stability and efficiency of production processes.
Product Parameters
- Product Model: IC646MRA700
- Manufacturer: GE Intelligent Platforms (now part of Emerson)
- Product Type: Relay Output Module
- Number of Output Points: 16 points (divided into 2 groups, 8 points per group)
- Output Type: Dry contact (Form C – double throw), normally open/normally closed relay
- Rated Contact Load: 2A @ 30VDC or 250VAC
- Backplane Power Consumption: 5V DC, 100mA (maximum)
- Isolation Method: Inter-group isolation (500VAC), optical isolation between points and backplane
- Response Time: Turn-on ≤10ms, turn-off ≤12ms
- Module Status Indication: One LED status indicator per point
- Operating Temperature: 0°C to 60°C
- Installation Method: Slot installation in RX3i / RX7i series racks
Structure and Composition
The GE IC646MRA700 module features a robust metal housing, providing excellent electromagnetic interference (EMI) resistance. The front of the module is equipped with a transparent plastic cover to protect the terminal blocks and label point number information. Its most prominent front feature is two rows of 16 green LED indicators—one corresponding to each output point—which intuitively display the real-time activation status of the point, greatly facilitating on-site debugging and fault diagnosis.
At the core of the module are 16 high-quality electromechanical relays, each offering a set of normally open and normally closed contacts (Form C). These relays are divided into two groups of 8 points each, with electrical isolation between groups. This allows operation at different voltage levels, enhancing wiring flexibility. The module connects closely to the PACSystems backplane via a multi-pin connector at the rear, drawing 5VDC logic power and control signals from the backplane. Internal optocouplers achieve electrical isolation between the backplane logic circuit and the on-site side relay coils, effectively protecting the control system from surges and noise on the on-site side.
Key Features and Advantages
1. High-Reliability Drive
GE IC646MRA700 adopts industrial-grade electromechanical relays. Its double-throw (Form C) contact design provides unparalleled wiring flexibility, supporting both normally open and normally closed configurations. It can directly drive AC or DC loads up to 2 amps without the need for additional intermediate relays, simplifying cabinet design and improving system reliability.
2. Excellent Electrical Isolation
The module offers multiple isolation layers: between points and the backplane, and between groups. This isolation strategy is critical—it effectively confines potential on-site faults (such as short circuits or overvoltages) to local areas, preventing them from spreading to the backplane via the output module. This protects the entire controller and other expensive I/O modules, ensuring high system availability.
3. Powerful Diagnostics and Visibility
Each output point of the module is equipped with an independent green LED status indicator. Technicians can quickly confirm whether output commands have been successfully delivered to the module terminals without using a multimeter. This significantly accelerates debugging processes and fault localization during daily maintenance, reducing downtime.
4. Flexible Modular Integration
As a member of the PACSystems family, GE IC646MRA700 can be seamlessly integrated into any RX3i or RX7i rack, leveraging the convenience of a unified programming, configuration, and diagnostic environment. Its hot-swappable function (on racks that support this feature) allows users to replace faulty modules without powering off the system, maximizing production continuity.
Application Fields
The GE IC646MRA700 relay output module is widely used in industrial fields requiring reliable discrete control.
- In automotive manufacturing and assembly lines: It precisely controls welding robot clamps, conveyor motor starters, and solenoid valves for various pneumatic actuators to complete complex automated processes.
- In water treatment and sewage treatment plants: The module drives the start-stop control of high-power equipment such as pumps and fans—its strong load capacity and high isolation make it well-suited for such environments.
- In material handling and packaging industries: GE IC646MRA700 controls the power circuits of sorters, elevators, and packaging machines.
- In heavy industries such as food and beverage, metallurgy, and mining: It is also widely used in motor control centers (MCCs) and sequential control systems, serving as a solid bridge connecting the PLC logic world and on-site high-power equipment. It solves the core problem of directly driving high-current loads and ensures the reliable operation of critical equipment.
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- Industry Experts with Rich Experience: We have been deeply engaged in the automation industry for many years, accumulating profound experience and strong technical capabilities. This enables us to provide customers with tailor – made automation solutions.
- Complete Product Range and Quality Assurance: We act as an agent for automation products of numerous internationally renowned brands. This ensures that the products are of reliable quality and stable performance.
- Professional Services and Rapid Response: We have a professional technical team. It can provide customers with all – round technical support and services, and respond quickly to customer needs.
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Our Values
- Improve Production Efficiency: Through automation transformation, we realize the automation and intellectualization of the production process. This greatly improves production efficiency and reduces production costs.
- Enhance Product Quality: Precise automatic control ensures stable product quality and reduces the defect rate.
- Strengthen Market Competitiveness: Advanced automation technology helps enterprises stand out in the fierce market competition.
- Achieve Green Production: Automation systems can optimize energy utilization, reduce environmental pollution, and realize green production.
Our Services
- System Integration: We provide a full – process service, covering system design, equipment selection, installation and commissioning, as well as after – sales service.
- Spare Parts Supply: We have a large inventory of spare parts. This enables us to quickly provide original authentic spare parts and ensure the normal operation of equipment.
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