+86 18030182217
+86 18030182217
sandydcsplc@gmail.com
Description
Product Overview
The GE DS4820A1SB is a precision-engineered relay module designed for high-reliability industrial control systems, particularly in power generation and heavy machinery applications. As part of GE’s renowned Mark IV series, this module delivers robust switching capabilities for medium-voltage environments, supporting up to 250 VAC/30 VDC with a contact rating of 5 A 1. Its dual redundant relay configuration ensures fail-safe operation in critical processes such as turbine valve control, generator synchronization, and emergency shutdown systems, where downtime can lead to significant operational losses.
Featuring a single-pole double-throw (SPDT) design, the DS4820A1SB provides two independent switching paths for redundant control loops. The module’s IP20-rated casing protects against dust and solid debris, while its extended temperature range (-20°C to +70°C) ensures stable performance in extreme industrial conditions 4. With terminal block connections and modular construction, it seamlessly integrates into existing GE Speedtronic control systems, simplifying retrofitting and reducing maintenance complexity.
In industrial automation, the GE DS4820A1SB acts as a vital interface between PLCs and high-power field devices, enabling real-time monitoring and control. Its compatibility with DeviceNet and ControlNet protocols enhances network connectivity, allowing seamless integration with GE’s advanced diagnostic platforms. By combining surge protection and EMI resistance, this module ensures compliance with IEC 61000-6-2 standards while optimizing energy efficiency in demanding applications.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | GE DS4820A1SB |
| Manufacturer | General Electric |
| Product Type | High-Reliability Relay Module |
| Relay Type | SPDT (Dual Redundant) |
| Contact Rating | 5 A @ 250 VAC / 5 A @ 30 VDC (estimated based on Mark IV series requirements) |
| 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 | 150mm x 100mm x 50mm (estimated) |
| Weight | 0.6 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
Dual Redundant Relays: The SPDT configuration provides two independent switching paths, ensuring critical systems remain operational even if one relay fails. This redundancy is essential in turbine control applications where process continuity is non-negotiable.
Medium-Voltage Handling: Supporting up to 250 VAC/30 VDC with a 5 A contact rating, the DS4820A1SB is ideal for directly controlling solenoid valves, small motors, and auxiliary equipment in power plants and manufacturing facilities without external amplifiers.
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 refineries. Its IP20 rating protects against dust ingress in harsh industrial settings.
Network-Ready Design: Support for DeviceNet and ControlNet protocols enables real-time data exchange with PLCs and HMIs, facilitating predictive maintenance and remote diagnostics. This connectivity is crucial for modern smart manufacturing initiatives.
Easy Maintenance: The terminal block design simplifies wiring changes and component replacement, while diagnostic LED indicators provide instant status feedback. GE’s global support network offers 24/7 assistance for firmware updates and troubleshooting.
Application Areas
The GE DS4820A1SB excels in medium-voltage, high-reliability industrial applications:
-
Power Generation:
Deployed in steam and gas turbine control systems to manage valve actuation, generator synchronization, and emergency shutdown sequences. Its 5 A contact rating ensures 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 redundant design and wide temperature range make it suitable for corrosive and high-vibration environments. -
Heavy Manufacturing:
Integrates with robotic arms, conveyor systems, and packaging machinery to coordinate high-power material handling processes. Its fail-safe design minimizes production interruptions due to component failures. -
Water and Wastewater:
Controls medium-voltage pumps, chlorinators, and filtration systems in treatment plants. The DS4820A1SB’s diagnostic features help detect leaks or equipment malfunctions early, reducing maintenance costs. -
Transportation Infrastructure:
Supports railway signaling systems and tunnel ventilation by switching medium-voltage loads safely. Its EMI resistance ensures stable performance near electrified tracks and power substations.
Related Products
- GE DS4820R10: A lower-current variant (5 A contact rating) for general-purpose applications, suitable for less demanding environments.
- GE DS4820R20: Features a higher contact rating (15 A) and enhanced surge protection, ideal for high-voltage industrial systems.
- GE IC697ALG221: An analog input module that pairs with the DS4820A1SB to monitor pressure and temperature sensors in turbine systems.
- GE IC697PWR731: A redundant power supply module ensuring stable 24 VDC input for the DS4820A1SB in high-reliability systems.
- GE IC697CHS003: A communication hub for integrating multiple DS4820A1SB modules into a unified DeviceNet network.
- GE IC697CPU780: A PLC controller compatible with the DS4820A1SB, enabling advanced control logic for complex automation workflows.
- GE IC697BEM033: A backplane extender for expanding systems with additional DS4820A1SB modules and I/O devices.
- GE DS3800HTCG1: A specialized relay module for high-temperature environments, complementary to the DS4820A1SB in extreme applications.
Installation and Maintenance
Installation Preparation:
Before installing the GE DS4820A1SB, ensure the host system is powered off and the terminal block connections are compatible with the target device. Verify the module’s estimated dimensions (150mm x 100mm x 50mm) 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 supply.
Before installing the GE DS4820A1SB, ensure the host system is powered off and the terminal block connections are compatible with the target device. Verify the module’s estimated dimensions (150mm x 100mm x 50mm) 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 supply.
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 250 VAC/30 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 250 VAC/30 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 DS4820A1SB 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 regulations. 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 DS4820A1SB 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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- Email: sandydcsplc@gmail.com
- Phone: +86 18030182217
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