The Emerson VE4001S2T2B1 (KJ3222X1-BA1) is a DeltaV Series 2 discrete input module designed to acquire 24 V DC digital signals from field devices in industrial automation systems. It is used to monitor ON/OFF status from switches, relays, interlocks, alarms, and safety contacts, ensuring accurate and stable signal transmission into Emerson DeltaV distributed control systems.
Built for demanding process environments, this module combines fast response, strong electrical isolation, and built-in diagnostics, making it a dependable component in continuous operation industries such as oil & gas, chemical, power generation, and water treatment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE4001S2T2B1 (KJ3222X1-BA1) |
| Product Type | Discrete Input Module (DI) |
| System Platform | DeltaV Series 2 I/O |
| Input Channels | 8 channels |
| Input Type | 24 V DC dry contact / digital input |
| Field Voltage | 24 V DC nominal |
| Signal Function | ON/OFF status detection |
| Response Time | ≤ 1 ms (typical) |
| Isolation | Optical / galvanic isolation architecture |
| Diagnostics | Channel-level fault and status monitoring |
| Mounting Type | DeltaV I/O carrier mounted |
| Terminal Configuration | B1 termination variant |
| Operating Temperature | -40°C to +70°C |
| Humidity Range | 5% to 95% non-condensing |
| EMC Protection | Industrial noise immunity design |
Physical Dimensions & Weight
| Parameter | Specification |
|---|---|
| Dimensions (H × W × D) | 105 × 125 × 42 mm |
| Weight | Approx. 0.40–0.80 kg |
System Integration & Recommended Related Modules
The VE4001S2T2B1 KJ3222X1-BA1 is commonly deployed in Emerson DeltaV architectures alongside:
- Emerson VE3006 MD Plus Controller Module
- Emerson VE3008 MQ Controller Module
- Emerson VE4003S2B1 Analog Input Module
- Emerson VE4005S2B1 Analog Output Module
- Emerson VE4033S2B1 Redundant Input Module
- Emerson SE4053S2B11 Analog Input Plus Card
- Emerson SE4055S2B5 Analog Output Plus Card
- Emerson SE4083S2B11 Redundant Input Module
- Emerson SE4082S1T2B8 Digital Output Module
These modules together form a scalable and highly reliable distributed control system architecture.
Common Emerson DeltaV Discrete Input Modules
Frequently used related modules include:
- VE4001S2T2 / T2B1 / T2B2 Series Variants
- VE4001S2T1 Series Input Modules
- VE4001S2B1 Standard DI Modules
- SE4083S2B11 Redundant Digital Input Modules
- KJ3222X1-BA1 Series 2 Input Family Modules
