The ABB IEPAF02 is a 1000 VA AC Field Power Supply for Harmony Rack I/O systems. It offers 24V DC output support and a rugged IP20-rated design for reliable DCS field device excitation.
The ABB IEPAF02 is a specialized AC Field Power Supply designed for the Harmony Rack (HR) I/O series. This module provides essential excitation power to field-side equipment within a Bailey Infi 90 distributed control environment. It converts and regulates incoming power to drive sensors, transmitters, and various control devices. Consequently, the IEPAF02 ensures that field instruments receive the steady voltage required for accurate signal transmission.
| Attribute | Specification |
| Manufacturer | ABB |
| Model Number | IEPAF02 |
| Product Series | HR Series (Harmony Rack) |
| Component Type | AC Field Power Supply |
| Power Rating | 1000 VA |
| Output Voltage | 24V DC Support |
| Protection Rating | IP20 Class |
| Operating Temp | -10°C to +50°C |
| Net Weight | 0.3 kg |
| Dimensions | 31.2 x 19.2 x 1.8 cm |
The IEPAF02 module delivers a substantial 1000 VA power rating to support high-density I/O configurations. This high capacity allows a single unit to power multiple field devices simultaneously. Moreover, the 24V DC output maintains tight regulation to prevent measurement errors in analog loops. The module architecture prioritizes electrical stability even during significant load variations. Therefore, it serves as a dependable energy source for critical manufacturing and process control loops.
Engineers designed this module for the challenging conditions of industrial control rooms and satellite cabinets. The IP20-rated housing protects internal circuits from dust and accidental contact. Furthermore, the unit operates efficiently across a broad temperature spectrum from -10°C to +50°C. This thermal range ensures reliability in non-climate-controlled industrial settings or warehouses. Its slim 1.8 cm profile also maximizes rack space for other essential DCS components.
The IEPAF02 integrates seamlessly into the Bailey Infi 90 Harmony Rack mounting units. Its standardized footprint facilitates rapid hardware swaps and system expansions. Additionally, the lightweight 0.3 kg design reduces the physical stress on the backplane connectors. Technicians can easily monitor the power state through the front-facing indicators. Using original ABB power hardware preserves the long-term integrity of the Harmony Rack infrastructure.
The IEPAF02 excels in power generation and large-scale utility monitoring. It provides reliable field power for turbine sensors and boiler control instruments. Chemical processing plants also utilize this module for hazardous area transmitter excitation. Because it follows strict safety standards, the unit supports high-availability applications in various heavy industries. This versatility makes it a staple component for modernizing existing Infi 90 control systems.
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