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- Allen Bradley
- 22-RF012-BS
- PowerFlex Class 4 EMC Line Filter
- USA
- 229 x 50 x 100 mm
- 1.38 kg
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Allen-Bradley 22-RF012-BS is a PowerFlex Class 4 EMC line filter designed for use with PowerFlex 4 and PowerFlex 40 series AC drives. Its main function is to reduce electromagnetic interference (EMI) and conducted noise generated by variable frequency drives (VFDs), ensuring stable operation, improved power quality, and compliance with industrial EMC standards.
This filter is widely used in industrial automation systems where electrical noise suppression is critical for reliable motor control and communication stability.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | 22-RF012-BS |
| Product Type | EMC Line Filter (PowerFlex Class 4) |
| Compatible Drive Series | PowerFlex 4, PowerFlex 40 |
| Rated Voltage | 380–480 V AC, 3-Phase |
| Rated Frequency | 50/60 Hz |
| Current Rating | 12 A |
| Power Range | Approx. 0.4 – 3.7 kW (0.5 – 5 HP) |
| Filter Type | S-Type EMC Line Filter |
| Function | EMI suppression / conducted noise filtering |
| Mounting Type | Panel Mount |
| Protection Rating | IP20 |
| Dimensions | 229 × 50 × 100 mm |
| Weight | 1.38 kg |
| Operating Temperature | Industrial cabinet environment (typ. 0°C to 50°C) |
| Application | VFD power input filtering |
Function and Working Principle
The 22-RF012-BS EMC line filter is installed between the power supply and the AC drive. Its main purpose is to reduce high-frequency electrical noise generated by switching components inside the VFD.
Main Functions
- Reduces conducted electromagnetic interference (EMI)
- Improves power quality for sensitive equipment
- Prevents noise from propagating back into the power grid
- Enhances system stability in multi-drive installations
- Helps meet EMC compliance requirements
Working Principle
The filter uses a combination of inductors and capacitors to attenuate high-frequency switching noise produced by the drive’s inverter stage. Low-frequency power passes through with minimal loss, while high-frequency interference is suppressed and dissipated safely to ground.
Role in Industrial Automation Systems
In industrial systems, this EMC filter plays a key role in ensuring:
- Stable operation of AC drives
- Reduced electrical noise affecting PLCs and sensors
- Improved communication reliability in automation networks
- Compliance with industrial EMC standards
- Protection of upstream electrical infrastructure
It is especially important in environments with multiple VFDs operating on the same power distribution system.
Industrial Applications
The 22-RF012-BS is commonly used in:
- Conveyor systems with multiple drives
- Pump and fan control systems
- Packaging machinery
- Material handling equipment
- OEM automation machines
- Light to medium industrial drive systems
Installation and System Integration
Proper installation is essential for effective filtering performance:
- Install between power supply and PowerFlex 4/40 drive
- Keep wiring short and properly grounded
- Mount inside a metal control cabinet for shielding
- Ensure solid earth grounding connection
- Avoid routing output motor cables near input lines
- Follow EMC cabling guidelines strictly
Correct installation significantly improves noise suppression performance.
Compatible Components and Modules
- Allen-Bradley PowerFlex 4 AC Drives
- Allen-Bradley PowerFlex 40 AC Drives
- Industrial three-phase power supply systems
- Motor reactors and output filters
- PLC and HMI control systems (CompactLogix, MicroLogix)
- Industrial EMC grounding systems
Recommended Alternative Models
| Model | Product Type | Key Feature | Recommended Application |
|---|---|---|---|
| 22-RF012-BS | EMC Line Filter | Standard PowerFlex 4/40 filtering | General VFD installations |
| 22-RF007-BS | EMC Line Filter | Lower current rating | Small drive systems |
| 22-RF020-BS | EMC Line Filter | Higher current capacity | Multi-drive cabinets |
| 20F-EMC-FILT | EMC Filter Kit | PowerFlex 750 compatibility | Advanced drive systems |
| External DIN EMC Filter | Generic EMC Filter | Flexible installation | OEM custom panels |
Key Advantages
- Reduces electrical noise and EMI effectively
- Improves stability of VFD-driven systems
- Supports PowerFlex 4 and 40 drive compatibility
- Compact and easy to install in control panels
- Helps meet EMC compliance requirements
- Enhances reliability of surrounding automation equipment
- Suitable for multi-drive industrial environments
Technical FAQs
What is the main function of the 22-RF012-BS?
It reduces electromagnetic interference generated by PowerFlex 4 and 40 AC drives.
Where is it installed?
It is installed on the input side of the AC drive, between the power supply and the VFD.
Does it affect motor output?
No. It only filters input-side electrical noise and does not affect motor output directly.
Is grounding important?
Yes. Proper grounding is critical for effective EMI suppression.
Which drives are compatible?
It is designed for PowerFlex 4 and PowerFlex 40 AC drives.
Conclusion
The Allen-Bradley 22-RF012-BS PowerFlex Class 4 EMC Line Filter is an essential accessory for ensuring stable and noise-free operation of VFD systems. By reducing electromagnetic interference and improving power quality, it enhances the reliability, safety, and performance of industrial automation systems using PowerFlex 4 and 40 drives.