Description
Description
The Emerson DeltaV VE4001S2T2B4 is a high-density 32-channel discrete input module designed for integration within DeltaV S-Series and M-Series automation platforms. This module is engineered to monitor the state of field-side devices such as switches, pushbuttons, and relay contacts by providing a 24 VDC excitation voltage. It is specifically optimized for high-density applications in oil and gas, chemical processing, and power generation, where space efficiency and reliable digital state monitoring are critical. The module features integrated filtering and galvanic isolation to maintain signal integrity in high-EMI industrial environments.
Features
- 32 independent discrete input channels per module.
- Supports dry contact sensing with 24 VDC excitation.
- Hot-swappable design for maintenance without system downtime.
- Supports redundant configurations when paired with appropriate terminal blocks.
- Integrated LED status indicators for each channel on the faceplate.
- Advanced digital filtering to mitigate contact bounce and noise.
- Galvanic isolation (250 VAC field-to-logic) for enhanced system protection.
Applications
This module is widely utilized in process control systems for monitoring critical interlocks, emergency shutdown (ESD) inputs, and general digital status feedback from field instrumentation. Its high-density architecture makes it ideal for cabinets where I/O count is high and space is limited.
Technical Specifications
| Model |
VE4001S2T2B4 |
| Module Type |
32-Channel Discrete Input (Dry Contact) |
| Input Voltage |
24 VDC |
| Input Current |
5 mA at 24 VDC (nominal per channel) |
| LocalBus Power |
12 VDC at 150 mA (nominal) |
| Field Power |
24 VDC at 200 mA (maximum) |
| Operating Temperature |
-40 to 70 deg C |
| Storage Temperature |
-40 to 85 deg C |
| Relative Humidity |
5 to 95 percent (Non-condensing) |
| Isolation |
250 VAC (Field-to-Logic) |
| Protection Rating |
IP 20 |
Installation Guidelines
- Ensure the system carrier is powered down before inserting or removing the module, unless the system is specifically configured for hot-swapping in a live environment.
- Use shielded cabling for field inputs to minimize electromagnetic interference (EMI).
- Ensure proper grounding of the DeltaV carrier to the cabinet chassis to maintain signal integrity and safety.
- Verify that the module is fully seated in the carrier slot and the locking mechanism is engaged.
- Handle with care to prevent electrostatic discharge (ESD) damage; use a grounded wrist strap when handling electronic components.
- Maintain adequate airflow within the cabinet to ensure the module operates within the specified temperature range (-40 to 70 deg C).
FAQ
Is the VE4001S2T2B4 compatible with older M-Series systems?
Yes, this module is designed for compatibility with both DeltaV S-Series and M-Series automation platforms.
Does this module support redundancy?
Yes, the VE4001S2T2B4 supports redundant configurations when installed on a redundant terminal block, allowing for high-availability operation.
What is the purpose of the 24 VDC excitation?
The 24 VDC excitation is provided by the module to detect the state of dry contacts (switches or relays) in the field, allowing the system to determine if the circuit is open or closed.
