The Emerson VE4021 KJ2004X1-BA1 is a Remote Interface Unit (RIU) Module used in DeltaV M-Series systems. It functions as a remote I/O scanner and communication gateway, enabling deterministic communication between remote I/O racks and the DeltaV controller system.
It is designed for distributed I/O architectures, allowing I/O to be installed closer to field devices to reduce wiring complexity and improve system scalability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE4021 KJ2004X1-BA1 |
| Module Type | Remote Interface Unit Module |
| Assembly Number | 12P2890X042 |
| System Platform | DeltaV M-Series |
| Function | Remote I/O scanner / communication gateway |
| LocalBus Power | 3.3 VDC (500 mA max), 5 VDC (300 mA max) |
| Power Dissipation | ~4.0–5.4 W |
| Fuse Protection | 3.0 A (non-replaceable) |
| Architecture | Remote I/O subsystem |
| 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. 0.30 kg |
Key Features
- Remote I/O communication gateway for DeltaV systems
- Supports distributed I/O architecture
- High-speed deterministic LocalBus communication
- Reduces field wiring and cabinet complexity
- Built-in diagnostics for maintenance and troubleshooting
- Modular and scalable system design
- Suitable for harsh industrial environments
