The Emerson VE5128 is a high-capacity DeltaV Bulk Power Supply Module designed to deliver robust and stable 24 VDC power for large-scale industrial automation systems. Engineered for high-current applications up to 40A, it provides reliable energy distribution to controllers, I/O modules, field devices, and critical process infrastructure.
As one of the most powerful power modules in the DeltaV ecosystem, the VE5128 is specifically built for complex process plants where electrical stability, redundancy readiness, and continuous uptime are non-negotiable. Its advanced power conversion architecture ensures high efficiency, low ripple output, and strong immunity against industrial electrical noise.
This module is widely deployed in mission-critical environments where system failure is not an option, making it a cornerstone component in modern distributed control system (DCS) architectures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE5128 |
| Product Type | High-Capacity Bulk Power Supply Module |
| Platform | DeltaV Distributed Control System |
| Input Voltage | 85–264 VAC |
| Input Frequency | 43–67 Hz |
| Output Voltage | 24 VDC (adjustable 23.5–28.5 VDC) |
| Output Current | 40 A continuous |
| Peak Output Capability | Up to 60 A (short duration) |
| Output Power | 960 W continuous / 1440 W peak |
| Efficiency | ≥93% typical |
| Power Factor | ~0.92–0.98 (active PFC) |
| Ripple & Noise | <200 mV peak-to-peak |
| Hold-up Time | >20 ms at full load |
| Protection | Overload, overvoltage, short circuit, thermal shutdown |
| Cooling Method | Natural convection (fanless industrial design) |
| Mounting Type | DIN rail / DeltaV power carrier system |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5%–95% non-condensing |
| EMC Protection | Industrial-grade immunity design |
| Dimensions (H × W × D) | 123 mm × 180 mm × 122 mm |
| Weight | ~2.8 kg |
Recommended System Integration Modules
To achieve optimal DeltaV system architecture performance, the VE5128 is commonly integrated with the following Emerson modules:
| Model | Function |
|---|---|
| VE5011 | Mid-capacity AC to DC bulk power module |
| VE5123 | 10A class bulk power supply (smaller systems) |
| VE5008 | Redundant DC power supply module |
| VE5134 | Power redundancy and load sharing module |
| VE4060C1 | I/O carrier module (8-wide system integration) |
| VE4070 | System interface adapter module |
These modules form a scalable and redundant power distribution architecture for large automation plants.
Popular Emerson DeltaV Power Modules
Within Emerson’s DeltaV ecosystem, VE5128 is part of a high-power industrial module family:
- VE5123 10A Bulk Power Supply Module
- VE5126 20A Mid-Capacity Power Module
- VE5128 40A High-Capacity Power Supply Module
- VE5138 Compact Low-Load Power Module
- VE5009 DC/DC System Power Module
- VE5011 AC/DC Bulk Power Module
- VE5008 Redundant Power Supply Module
- VE5134 Power Sharing & Redundancy Module
These modules are designed to support flexible system scaling from small process skids to full refinery-scale control systems.
