VFD Division 2 NEMA 4 panels provide a purged, pressurized enclosure solution for operating drives and related equipment in classified areas. These packages use a Z‑purge system to achieve Division 2 or Zone 2 suitability, allowing general‑purpose components to be installed inside the enclosure while maintaining hazardous‑area compliance. Control Innovations supplies custom Division 2 VFD panels designed for reliable operation, proper cooling, and flexible control options.
A VFD Division 2 NEMA 4 panel provides variable‑speed motor control in classified areas using a purged enclosure. The Z‑purge system maintains a safe internal environment, allowing standard components to be used while meeting Division 2 or Zone 2 requirements.
Key Features
Control Innovations Division 2 VFD panels typically include:
- Z‑purge system for Division 2 or Zone 2 classification
- NEMA 4 enclosure for outdoor and washdown environments
- Cooling options such as Division‑rated air conditioners or heat exchangers
- Ability to use general‑purpose relays, switches, thermostats, contactors, breakers, and disconnects inside the enclosure
- VFD of your choice with optional harmonic mitigation (reactors, dV/dt filters, matrix filters)
- Division 2‑rated HMI when keypad mounting is not possible
- Door‑mounted operators and pilot lights for essential functions
- Optional communication interfaces (Ethernet, Modbus, BACnet, LonWorks)
This creates a flexible, compliant, and field‑ready drive system for hazardous locations.
Panel Construction & Components
A typical Division 2 VFD panel includes:
- Purged NEMA 4 enclosure with certified Z‑purge system
- Cooling system sized for drive heat dissipation, rated for Division 1 or 2
- VFD mounted with proper spacing and airflow
- Optional Division 2 HMI for drive monitoring and adjustments
- Operator buttons for start/stop, forward/reverse, speed control, fault reset
- Pilot lights for power, drive ready, running, and fault indication
- Harmonic mitigation equipment as required
This ensures safe operation, proper cooling, and clear operator access.
Purge System Requirements
Division 2 VFD panels require:
- Instrument air supply on site for purge operation
- Proper airflow and pressure maintenance per purge system guidelines
This maintains the safe internal environment needed for Division 2 classification.
Remote Monitoring & Integration
Panels can be equipped with:
- Ethernet
- Modbus
- BACnet
- LonWorks
- Other communication interfaces as required
These options support remote monitoring, control, and integration with site systems.
Certification & Compliance
All hazardous‑location panels manufactured by Control Innovations are:
- Certified under special inspection
- Ready for installation without additional field certification
- Subject to approval by the local authority having jurisdiction for wiring and installation methods
Additional certifications for global installations can be arranged as needed