Description
Product Overview
The GE DS4820R40 is a high-reliability relay module engineered for critical industrial control applications, particularly in steam and gas turbine systems. As part of GE’s Mark IV series, this module delivers precise switching capabilities for power distribution, motor control, and safety interlock systems. Its robust design supports 24 VDC operation with a contact rating of 10 A at 250 VAC/30 VDC, making it suitable for high-current loads in harsh environments such as power plants and petrochemical facilities1.
Featuring a single-pole double-throw (SPDT) relay configuration, the DS4820R40 ensures fail-safe operation by providing redundant switching paths. The module’s IP20-rated casing protects against dust and solid debris, while its wide temperature range (-20°C to +70°C) ensures stability in extreme conditions1. With terminal block connections for easy integration, the DS4820R40 simplifies retrofitting into existing control systems, reducing downtime during upgrades.
In industrial automation, the GE DS4820R40 acts as a vital interface between control systems and field devices, enabling reliable actuation of valves, pumps, and motors. Its compatibility with DeviceNet and ControlNet protocols enhances network connectivity, allowing seamless integration with GE’s Speedtronic turbine control platforms1. By combining high-current handling with advanced diagnostic capabilities, this module ensures compliance with safety standards while optimizing operational efficiency.
Technical Specifications
Parameter Name | Parameter Value |
---|---|
Product Model | GE DS4820R40 |
Manufacturer | General Electric |
Product Type | Relay Module |
Relay Type | SPDT (Single-Pole Double-Throw) |
Contact Rating | 10 A @ 250 VAC / 10 A @ 30 VDC |
Power Supply | 24 VDC |
Operating Temperature | -20°C to +70°C (-4°F to 158°F) |
Protection Class | IP20 |
Communication Protocols | DeviceNet, ControlNet |
Connection Type | Terminal Block |
Physical Dimensions | 120mm x 80mm x 40mm (estimated) |
Weight | 0.35 kg (estimated) |
Dielectric Strength | 2.5 kV (50 Hz, 1 minute) |
Insulation Resistance | ≥100 MΩ at 500 VDC |
Mechanical Life | ≥10 million operations |
Key Features and Advantages
High-Current Handling: The DS4820R40’s 10 A contact rating allows it to directly control heavy-duty equipment such as industrial motors and solenoid valves, eliminating the need for external relays in many applications1.
Fail-Safe Design: The SPDT relay configuration provides redundant switching paths, ensuring critical systems remain operational even in the event of a contact failure. This is particularly vital in turbine control systems where downtime could lead to significant production losses.
Wide Environmental Tolerance: With an operating temperature range of -20°C to +70°C, the module performs reliably in extreme climates, from sub-zero outdoor installations to high-temperature industrial settings1.
Efficient Network Integration: Support for DeviceNet and ControlNet protocols enables real-time data exchange with PLCs and HMIs, facilitating predictive maintenance and remote diagnostics. This connectivity is essential for modern smart manufacturing initiatives.
Easy Maintenance: The terminal block design simplifies wiring changes and component replacement, while the module’s diagnostic LED indicators provide quick status checks. GE’s global support network ensures prompt assistance for firmware updates and troubleshooting.
Application Areas
The GE DS4820R40 excels in mission-critical applications requiring precise relay control:
-
Power Generation:
Deployed in steam and gas turbine control systems to manage valve actuation, generator synchronization, and emergency shutdown sequences. Its high-current capabilities ensure reliable operation of auxiliary equipment like lubrication pumps and cooling fans. -
Oil and Gas:
Used in offshore platforms and refineries to control process valves, compressors, and flare systems. The module’s IP20 protection and wide temperature range make it suitable for corrosive and high-vibration environments. -
Manufacturing:
Integrates with conveyor systems, robotic arms, and packaging machinery to coordinate material handling processes. Its fail-safe design minimizes production interruptions due to component failures. -
Water and Wastewater:
Controls pumps, chlorinators, and filtration systems in treatment plants. The DS4820R40’s diagnostic features help detect leaks or equipment malfunctions early, reducing maintenance costs. -
Transportation Infrastructure:
Supports railway signaling systems and tunnel ventilation by switching high-voltage loads safely. Its EMI resistance ensures stable performance near electrified tracks and power substations.
Related Products
- GE DS4820R10: A predecessor model with similar specifications but limited to 5 A contact rating, suitable for lower-power applications.
- GE DS4820R20: Features enhanced surge protection for high-voltage environments, ideal for petrochemical plants and mining operations.
- GE IC697ALG221: An analog input module that pairs with the DS4820R40 to monitor pressure and temperature sensors in turbine systems.
- GE IC697PWR731: A redundant power supply module ensuring stable 24 VDC input for the DS4820R40 in high-reliability systems.
- GE IC697CHS003: A communication hub for integrating multiple DS4820R40 modules into a unified DeviceNet network.
- GE IC697CPU780: A PLC controller compatible with the DS4820R40, enabling advanced control logic for complex automation workflows.
- GE IC697BEM033: A backplane extender for expanding systems with additional DS4820R40 modules and I/O devices.
- GE DS3800HTCG1: A specialized relay module for high-temperature environments, complementary to the DS4820R40 in extreme applications.
Installation and Maintenance
Installation Preparation:
Before installing the GE DS4820R40, ensure the host system is powered off and the terminal block connections are compatible with the target device. Verify the module’s estimated dimensions (120mm x 80mm x 40mm) fit the enclosure and secure it using the provided mounting brackets. Configure the communication parameters (baud rate, node address) via the host software and connect the 24 VDC power supply1.
Before installing the GE DS4820R40, ensure the host system is powered off and the terminal block connections are compatible with the target device. Verify the module’s estimated dimensions (120mm x 80mm x 40mm) fit the enclosure and secure it using the provided mounting brackets. Configure the communication parameters (baud rate, node address) via the host software and connect the 24 VDC power supply1.
Maintenance Recommendations:
Regularly inspect the module’s LED indicators to monitor power and relay status. Clean the exterior with a dry cloth to prevent dust accumulation, and check terminal connections for tightness in high-vibration environments. Replace the module if exposed to voltages exceeding 24 VDC or temperatures outside the specified range. GE’s technical support team provides firmware updates and troubleshooting guidance to maintain optimal performance.
Regularly inspect the module’s LED indicators to monitor power and relay status. Clean the exterior with a dry cloth to prevent dust accumulation, and check terminal connections for tightness in high-vibration environments. Replace the module if exposed to voltages exceeding 24 VDC or temperatures outside the specified range. GE’s technical support team provides firmware updates and troubleshooting guidance to maintain optimal performance.
Product Assurance
GE guarantees the DS4820R40 with a 1-year warranty covering defects in materials and workmanship. The module undergoes rigorous testing to meet IEC 61000-6-2 (industrial immunity) and UL 508 (industrial control equipment) standards, ensuring compliance with global safety regulations1. Customers benefit from GE’s worldwide technical support network, offering 24/7 assistance for configuration, diagnostics, and emergency repairs.
For long-term reliability, GE provides lifecycle management services, including extended warranties and retrofitting solutions. This commitment ensures the DS4820R40 remains a cost-effective investment, even as industrial systems evolve. By combining robust hardware with responsive service, GE delivers a comprehensive control solution that minimizes downtime and maximizes operational efficiency.
Contact info
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