Description
ICS Triplex FAIR-RITE VO
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Fair-Rite Products Corp. (supplied under ICS Triplex system integration) |
| Product Type | Ferrite core for EMI suppression |
| Application | EMI/RFI suppression on round cables |
| Frequency Range | Optimized for 20 MHz to 250 MHz (typical Fair-Rite Mix 43 performance) |
| Initial Permeability | μi ≈ 800 (typical for Mix 43 material) |
| Material Type | Nickel-zinc (NiZn) ferrite |
| Operating Temperature | -40°C to +125°C (standard NiZn ferrite range) |
| Case Material | Polypropylene or Nylon 6/6 (UL 94-V0 flammability rating for snap-on types) |
| Suppression Range | Up to 2000 MHz depending on cable configuration |
Functional Features
- Broadband EMI Attenuation: Effective suppression across a wide frequency spectrum from megahertz to gigahertz ranges
- Common-Mode Filtering: Provides common-mode filtering for multi-strand cables and differential-mode filtering for single conductors
- High-Frequency Noise Suppression: Attenuates unwanted electromagnetic emissions from switching circuits and digital processors
- Snap-On Installation: Split-core designs allow installation on cables already fitted with connectors without disassembly
- Secure Locking Mechanism: Special snap lock prevents accidental opening after installation
- UL-Approved Housing: Polypropylene or nylon cases carry UL 94-V0 flammability ratings
Application Scenarios
- EMI suppression on Triconex system communication cables
- Noise filtering on processor-to-I/O module interconnects
- RFI attenuation on power supply lines within control cabinets
- Signal integrity protection on safety system field cables
- EMC compliance enhancement in industrial control systems
Performance Parameters
- Impedance Characteristics: High impedance at target interference frequencies
- Insertion Loss: Significant attenuation of unwanted common-mode currents
- Temperature Stability: Stable magnetic properties across industrial temperature ranges
- Saturation Resistance: Maintains suppression performance under typical cable current loads
Material Composition
- Core Material: Sintered nickel-zinc (NiZn) ferrite ceramic
- Housing Material: Polypropylene or Nylon 6/6 thermoplastic (for snap-on variants)
- Finish: Burnished edges to prevent cable insulation damage
Structural Characteristics
- Toroidal or Split-Core Geometry: Ring-shaped or clamshell design for cable threading
- Compact Dimensions: Small footprint suitable for dense control cabinet installations
- Multiple Aperture Options: Various inner diameters accommodate different cable sizes
- Color Coding: Standard material color codes for identification
Working Principle
The ferrite core acts as a one-turn common-mode choke. When signal and power cables pass through the ferrite ring, common-mode high-frequency currents encounter high impedance due to the magnetic properties of the ferrite material. This impedance converts the unwanted high-frequency energy into heat, effectively attenuating electromagnetic interference while allowing the desired low-frequency or differential signals to pass with minimal attenuation.
Installation Requirements
- Position the ferrite core as close to the noise source or equipment entry point as possible
- Ensure the cable passes through the center aperture without sharp bends
- For split-core types, close the latch securely until it clicks into place
- Use cable ties to secure the ferrite to the cable if vibration is present
- Group cables carrying similar signals through the same core when appropriate
Operating Precautions
- Select the correct core size for the cable diameter to ensure proper fit
- Do not exceed the rated temperature range to prevent material degradation
- Inspect cores periodically for physical damage or cracking
- Replace cores that show signs of material breakdown or reduced suppression
- Ensure proper cable routing to maximize the common-mode choke effect
