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- Allen Bradley
- 80026-508-08-R
- Buffer Capacitor Module
- USA
- 66 mm
- 0.77 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 80026-508-08-R Buffer Capacitor Module is a high-reliability DC bus energy storage module designed to stabilize power, absorb voltage fluctuations, and improve the operational reliability of industrial automation equipment. Engineered for demanding manufacturing and process control environments, the module temporarily stores electrical energy and releases it when required to maintain stable DC bus voltage during transient load conditions.
The 80026-508-08-R plays a critical role in industrial drive systems, power conversion equipment, servo systems, and automation control cabinets. By buffering sudden voltage variations and supplying stored energy during short-term power disturbances, the module helps minimize nuisance faults, reduce equipment stress, and improve the overall stability of industrial electrical systems.
Its compact design allows easy integration into industrial control cabinets where installation space is limited. The robust construction ensures long-term performance under continuous industrial operating conditions, including environments subject to vibration, electrical noise, and frequent load changes.
With a length of 66 mm and an approximate weight of 0.77 kg, the module offers a compact yet effective solution for DC bus stabilization in industrial automation applications.
Typical applications include variable frequency drives, servo drive systems, industrial power supplies, machine automation equipment, robotics, conveyor systems, packaging machinery, material handling systems, CNC machines, and process control installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 80026-508-08-R |
| Product Type | Buffer Capacitor Module |
| Primary Function | DC Bus Energy Storage and Voltage Stabilization |
| Energy Storage Method | Capacitive Energy Storage |
| Installation Location | Industrial Control Cabinet |
| Compatible Equipment | AC Drives, Servo Drives, Industrial Power Systems |
| Cooling Method | Natural Convection |
| Mounting Method | Equipment / Cabinet Mount |
| Housing Material | Industrial Metal Enclosure |
| Protection Features | Voltage Stabilization and Power Buffering |
| Length | 66 mm |
| Weight | Approximately 0.77 kg |
| Typical Application | Industrial Power Conditioning |
Function and Working Principle
The 80026-508-08-R Buffer Capacitor Module stores electrical energy within high-capacity capacitors during normal operation and releases that energy whenever the DC bus experiences temporary voltage drops or sudden load demands.
Typical Power Flow
AC Power Supply
↓
Rectifier
↓
DC Bus
↓
80026-508-08-R Buffer Capacitor Module
↓
Servo Drive / AC Drive
↓
Industrial Motor
↓
Production Equipment
During operation, the module continuously charges from the DC bus. When short-term voltage disturbances occur, the stored energy is immediately discharged to stabilize the supply voltage and support uninterrupted equipment operation.
Primary operating functions include:
- DC bus voltage stabilization
- Temporary energy storage
- Voltage fluctuation suppression
- Load transient compensation
- Improved power quality
- Reduced electrical stress
- Enhanced drive reliability
- Stable motor operation
- Improved system efficiency
- Continuous industrial performance
This buffering capability contributes to greater equipment availability and improved process stability.
Role in Industrial Control Systems
Within industrial automation systems, the 80026-508-08-R functions as an energy storage component that supports stable DC bus operation for connected power electronics.
Typical automation architecture:
Three-Phase Power Supply
↓
Rectifier
↓
80026-508-08-R Buffer Capacitor Module
↓
Servo Drive / AC Drive
↓
Industrial Motor
↓
Production Equipment
The module helps maintain consistent electrical performance, reducing the likelihood of drive trips caused by short-duration voltage disturbances.
Industrial Applications
Manufacturing Automation
Typical applications include:
- Automated assembly lines
- Production machinery
- Packaging systems
- Robotic workstations
- Industrial machine tools
Variable Frequency Drive Systems
Suitable for:
- PowerFlex AC drives
- Industrial motor control
- Conveyor systems
- Pump applications
- Fan control systems
Servo Motion Systems
Frequently installed in:
- Servo amplifiers
- Motion control systems
- Precision positioning equipment
- CNC machinery
- Automated handling systems
Material Handling Equipment
Ideal for:
- Conveyor automation
- Warehouse systems
- Palletizing equipment
- Sorting machines
- Logistics automation
Food and Beverage Processing
Common applications include:
- Filling machinery
- Packaging equipment
- Mixing systems
- Conveyor controls
- Production automation
General Industrial Automation
Widely used in:
- Pharmaceutical manufacturing
- Water treatment plants
- Chemical processing
- Printing machinery
- Textile production equipment
Installation and System Integration
Before installation, engineers should verify:
- Equipment compatibility
- DC bus voltage requirements
- Cabinet ventilation
- Mounting location
- Electrical connections
- Grounding requirements
- Environmental conditions
- Cooling airflow
- Mechanical clearances
- Commissioning procedures
Recommended Installation Procedure
- Disconnect all electrical power.
- Verify the DC bus is fully discharged.
- Mount the capacitor module securely.
- Connect the electrical terminals.
- Verify correct polarity and wiring.
- Inspect all mechanical connections.
- Restore system power.
- Measure DC bus voltage.
- Verify charging operation.
- Test connected drive performance.
- Monitor system stability.
- Complete commissioning documentation.
Proper installation helps maximize capacitor life and overall system reliability.
Compatible System Components
| Component | Function |
|---|---|
| Allen Bradley PowerFlex Drive | Motor speed control |
| Kinetix Servo Drive | Precision motion control |
| 80026-508-08-R | DC bus energy buffering |
| Industrial Power Supply | System power |
| AC Motor | Mechanical drive |
| Servo Motor | Precision motion |
| ControlLogix PLC | Automation controller |
| CompactLogix PLC | Machine control |
| EtherNet/IP Network | Industrial communication |
| Industrial Control Cabinet | Equipment enclosure |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| 80026-508-08-R | Buffer Capacitor Module | DC bus stabilization |
| 80026 Series Capacitor Modules | Energy Storage Module | Industrial power conditioning |
| PowerFlex DC Bus Modules | Drive Accessory | AC drive support |
| Kinetix Power Modules | Servo Power Module | Motion control systems |
| Industrial Capacitor Assembly | Energy Storage Device | Automation equipment |
Key Advantages
- Reliable DC bus energy storage
- Stabilizes voltage during transient load conditions
- Improves drive system reliability
- Reduces voltage fluctuation effects
- Supports continuous industrial operation
- Compact cabinet-mounted design
- Durable industrial construction
- Easy installation and maintenance
- Compatible with Allen Bradley automation systems
- Long service life under demanding operating conditions
- Length: 66 mm
- Approximate weight 0.77 kg
Technical FAQs
What is the Allen Bradley 80026-508-08-R?
The 80026-508-08-R is a Buffer Capacitor Module designed to store electrical energy and stabilize the DC bus in industrial automation systems.
What is its primary function?
Its primary function is to temporarily store energy and compensate for short-duration voltage fluctuations, helping maintain stable operation of connected drives and power electronics.
What is the module length?
The module has a length of 66 mm.
What is the approximate weight?
The module weighs approximately 0.77 kg.
Which equipment is compatible?
It is commonly used with industrial AC drives, servo drives, DC bus systems, industrial power supplies, and automation equipment.
Which industries commonly use this module?
It is widely used in manufacturing, packaging, robotics, material handling, water treatment, pharmaceuticals, food processing, printing, textile production, and general industrial automation.
Does the module improve system reliability?
Yes. By stabilizing the DC bus and compensating for temporary voltage disturbances, it helps reduce drive faults and improve equipment uptime.
Does the module require regular maintenance?
The module generally requires minimal maintenance. Periodic inspection of electrical connections, mounting hardware, and cabinet cooling conditions is recommended during scheduled preventive maintenance.
Where is the module typically installed?
It is typically installed inside industrial control cabinets alongside AC drives, servo drives, or other DC bus-powered equipment.
Why is a buffer capacitor module important?
A buffer capacitor module improves power quality, reduces electrical stress on equipment, minimizes nuisance shutdowns, and supports stable long-term operation of industrial automation systems.
Conclusion
The Allen Bradley 80026-508-08-R Buffer Capacitor Module is a compact and dependable energy storage solution for industrial DC bus applications. By buffering voltage fluctuations and supplying temporary stored energy during transient conditions, it improves the stability, reliability, and performance of industrial drive and motion control systems.
With a length of 66 mm and an approximate weight of 0.77 kg, the 80026-508-08-R is well suited for installation in space-constrained industrial control cabinets. When integrated with compatible Allen Bradley PowerFlex drives, Kinetix servo systems, PLCs, industrial power supplies, and automation equipment, it enhances electrical stability, reduces downtime, and supports reliable long-term operation in demanding industrial environments.