The Emerson VE4021 is a Remote Interface Unit (RIU) Module used in the DeltaV M-Series system. It provides communication between the main DeltaV controller and distributed remote I/O racks, acting as a high-speed I/O scanner and communication gateway.
This module enables distributed control architecture, allowing I/O to be installed closer to field devices to reduce wiring cost and improve system scalability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE4021 |
| Module Type | Remote Interface Unit Module |
| System Platform | DeltaV M-Series |
| Function | Remote I/O scanner / communication gateway |
| Architecture | Remote I/O system |
| Communication Role | Synchronizes and scans remote I/O modules |
| Diagnostics | Module health and communication status |
| Mounting Type | DeltaV carrier-mounted |
| Operating Temperature | -40°C to +70°C |
| Humidity | 5–95% RH non-condensing |
| Protection Rating | IP20 |
Physical Dimensions & Weight
| Parameter | Specification |
|---|---|
| Dimensions (L × W × H) | 107 × 41 × 105 mm |
| Weight | Approx. 0.28 kg |
Key Features
- Remote I/O communication gateway for DeltaV systems
- Supports distributed I/O architecture
- Reduces field wiring and cabinet complexity
- High-speed deterministic communication
- Built-in diagnostics for fast troubleshooting
- Modular and scalable system design
- Industrial-grade reliability
