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- Allen Bradley
- 22-RF018-CS
- PowerFlex Class 4 EMC Line Filter
- USA
- 309 x 60 x 130 mm
- 1.5 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen-Bradley 22-RF018-CS is a PowerFlex Class 4 EMC line filter designed for PowerFlex 4, PowerFlex 40, and related AC drive systems. It is used to reduce electromagnetic interference (EMI) generated by variable frequency drives (VFDs), ensuring cleaner power supply conditions, improved system stability, and compliance with industrial EMC requirements.
This filter is commonly installed in industrial control panels where multiple drives operate, helping to prevent electrical noise from affecting PLCs, sensors, and communication networks.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Model | 22-RF018-CS |
| Product Type | EMC Line Filter (PowerFlex Class 4) |
| Compatible Drive Series | PowerFlex 4, PowerFlex 40, PowerFlex 40P, PowerFlex 400 |
| Rated Voltage | 380–480 V AC, 3-Phase |
| Rated Frequency | 50/60 Hz |
| Current Rating | 18 A |
| Power Range | Approx. 2.2 – 7.5 kW (3 – 10 HP) |
| Filter Type | S-Type EMC Line Filter |
| Function | EMI suppression / conducted noise reduction |
| Mounting Type | Panel Mount |
| Protection Rating | IP00 / Open Type (inside cabinet use) |
| Dimensions | 309 × 60 × 130 mm |
| Weight | 1.5 kg |
| Operating Temperature | Industrial cabinet environment (typically 0°C to 50°C) |
| Application | AC drive input-side EMI filtering |
Function and Working Principle
The 22-RF018-CS EMC filter is installed between the power supply and the AC drive input. Its main purpose is to suppress high-frequency noise generated by the switching operation of VFDs.
Main Functions
- Reduces conducted electromagnetic interference (EMI)
- Prevents noise feedback into the power grid
- Improves power quality in multi-drive systems
- Enhances stability of PLC and communication networks
- Supports EMC compliance in industrial installations
Working Principle
The filter uses inductors and capacitors to attenuate high-frequency switching noise produced by the inverter stage of the drive. While normal 50/60 Hz power passes through, unwanted high-frequency components are suppressed and safely dissipated through grounding, reducing system-wide electrical noise.
Role in Industrial Automation Systems
The 22-RF018-CS plays an important role in maintaining electrical stability in automation systems:
- Ensures stable operation of PowerFlex VFD systems
- Reduces interference affecting PLCs, sensors, and HMIs
- Improves reliability of industrial communication networks
- Supports EMC compliance in factory environments
- Protects sensitive equipment from electrical noise pollution
It is especially useful in systems with multiple VFDs operating within the same control cabinet.
Industrial Applications
Typical applications include:
- Conveyor systems with multiple motor drives
- Pump and fan control systems
- Packaging and labeling machines
- Material handling systems
- OEM automation panels
- Light to medium industrial drive installations
Installation and System Integration
Proper installation is critical for optimal performance:
- Install between power supply and VFD input
- Keep wiring short and properly routed
- Mount inside a grounded metal control cabinet
- Ensure strong earth bonding connection
- Separate motor cables from input wiring
- Follow strict EMC cabling guidelines
Incorrect installation may reduce filtering effectiveness significantly.
Compatible Components and Modules
- Allen-Bradley PowerFlex 4 AC Drives
- Allen-Bradley PowerFlex 40 / 40P / 400 Drives
- Industrial three-phase power distribution systems
- Motor reactors and output filters
- PLC systems (CompactLogix, MicroLogix)
- Industrial grounding and EMC shielding systems
Recommended Alternative Models
| Model | Product Type | Key Feature | Recommended Application |
|---|---|---|---|
| 22-RF018-CS | EMC Line Filter | Standard 18A PowerFlex filter | General VFD installations |
| 22-RF012-BS | EMC Line Filter | Lower current rating | Small drive systems |
| 22-RF020-CS | EMC Line Filter | Higher current capacity | Multi-drive cabinets |
| 20F-EMC-FILT | EMC Filter Kit | PowerFlex 750 compatibility | Advanced drive systems |
| Generic 3-Phase EMC Filter | EMC Line Filter | Flexible OEM use | Custom control panels |
Key Advantages
- Reduces electromagnetic interference effectively
- Improves stability of drive-controlled systems
- Supports multiple PowerFlex drive series
- Compact design for panel integration
- Helps meet EMC compliance requirements
- Enhances reliability of surrounding automation devices
- Suitable for multi-drive industrial environments
Technical FAQs
What is the main function of the 22-RF018-CS?
It reduces electromagnetic noise generated by VFDs in PowerFlex systems.
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 performance?
No. It only filters input-side electrical noise and does not impact motor output.
Is grounding important for this filter?
Yes. Proper grounding is essential for effective EMI suppression.
Which drives are compatible?
It is designed for PowerFlex 4, PowerFlex 40, 40P, and 400 series drives.
Conclusion
The Allen-Bradley 22-RF018-CS PowerFlex Class 4 EMC Line Filter is a critical component for ensuring clean, stable, and EMC-compliant operation in industrial VFD systems. By reducing electrical noise and improving power quality, it enhances system reliability, protects sensitive equipment, and supports efficient operation of PowerFlex-based automation setups.