Product Core Brief
- Model: VE4012S2B1
- Brand: Emerson (DeltaV)
- Series: DeltaV Distributed Control System
- Core Function: Provides versatile digital input and output capabilities for real-time monitoring and control of discrete signals in industrial automation systems.
- Product Type: Digital Input/Output (I/O) Signal Module
- Key Specs: Multi-function I/O | High Reliability | Harsh Environment Tolerance
- Condition: New Surplus / Original OEM
EMERSON 9199-00002 A6120
Key Technical Specifications
- Manufacturer: Emerson
- Part Number:
- Product Category: Digital I/O Signal Module
- System Architecture: Emerson DeltaV DCS
- Operating Voltage: 220V AC
- Frequency: 50Hz
- Operating Temperature Range: -40°C to +85°C
- Terminal Capacity: Suitable for wires up to 16 AWG
- Protection Class: IP20 (Non-hazardous areas)
- Compliance: UL, CE, ISO 9001
Product Introduction (No Fluff)
The Emerson is a versatile digital input/output signal module designed for the DeltaV distributed control system. It features multi-function I/O capabilities, allowing it to flexibly configure for different application scenarios. The module accurately monitors input signal states and controls output signals in real-time, ensuring system accuracy and stability.
Engineered to withstand harsh industrial environments, this module offers exceptional durability and reliability, making it ideal for production line control and equipment monitoring. Sourcing this exact OEM replacement prevents control loop disruptions and maintains system integrity during critical I/O failures.
QA & Testing SOP (Dynamic & Transparent)
Digital I/O modules demand precise signal switching and state accuracy. Every undergoes a rigorous validation process:
- Anti-Counterfeit Inspection: Verify Emerson/DeltaV factory labels, PCB silkscreen, and component lot codes against OEM baselines.
- Backplane Communication Test: Mount on a dedicated DeltaV test rack to validate handshake, I/O scanning, and network redundancy.
- Signal State Verification: Inject discrete voltage signals to verify accurate digital state readback and relay/contact switching at the exact programmed setpoints.
- Burn-In: 4-hour continuous operation under nominal load to identify marginal switching components.
- Packaging: Shipped in dual-layer ESD shielding with a printed QA test report.
Installation Pitfalls & Guide (Engineer to Engineer)
❗ Wire Sizing & Termination: The supports wires up to 16 AWG. Ensure field wiring is properly sized for the connected load. Use appropriate crimped ferrules or wire lugs for secure termination to prevent loose connections that could lead to arcing or intermittent signal loss.
❗ Protection Class Limitations: This module carries an IP20 protection rating, meaning it is designed for installation in non-hazardous, indoor control panel environments. Ensure the module is adequately protected from dust, moisture, and direct physical contact within the marshalling cabinet.
❗ Grounding & Isolation: Digital I/O signals are susceptible to electrical noise. Ground the DeltaV rack chassis properly. Floating grounds can corrupt digital signals and cause nuisance tripping or false state readings.
❗ Configuration Matching: Before installing the , ensure the DeltaV Explorer configuration matches the physical card type and channel assignments. Swapping an I/O card without updating the configuration will result in incorrect signal mapping.
Replacement Protocol:
- Pre-Install: Place the associated control loops in Manual mode. Lock out the DeltaV rack power. Verify 0 VDC at the backplane. Ground yourself properly.
- Removal: Release the front panel retaining screws. Extract the failed straight out. Inspect the backplane connector and terminal block for bent pins or corrosion.
- Install: Align the new with the guides. Seat it firmly and secure the faceplate screws. Reconnect the field wiring to the terminal block.
- Power-on Test: Restore rack power. Verify the card’s status LED in DeltaV Explorer. Force a known digital signal at the terminal block and verify the state change on the operator display.

EMERSON 9199-00002 A6120
Technical FAQ
Yes, the maintains complete backward compatibility with existing DeltaV racks and configurations. It offers the same digital I/O functionality and integrates seamlessly with DeltaV Explorer. You can swap it directly into an older slot without reconfiguring the entire system.
Why is this listed as “New Surplus” instead of factory-new?
This is genuine Emerson DeltaV stock that was never deployed in a plant or refinery. It has been stored in climate-controlled inventory rather than exposed to harsh industrial environments. You receive the exact same MTBF and lifespan as a factory-fresh unit, typically at a significantly lower cost and without extended OEM lead times.
Can I hot-swap this digital I/O card while the DeltaV rack is live?
Yes, DeltaV I/O cards generally support hot-swapping. However, removing the card under power will cause an immediate loss of monitoring and control for the connected discrete channels, potentially triggering process alarms. Always notify the control room operators and place the associated loops in Manual before pulling the card to prevent spurious trips.
What is the warranty coverage on this part?
We provide a standard 12-month functional warranty. If the module fails under normal operating conditions within that window, we replace it. Our QA testing proves the module processed digital signals accurately before it left our bench, so we stand behind our inventory.
My DeltaV system is aging. Should I replace this card or plan a full system migration?
If this is an isolated failure, replacing the is the most cost-effective way to keep your process control system operational. However, if you are experiencing cascading backplane communication errors or multiple I/O card failures, your entire rack may be nearing end-of-life. Use this replacement as a bridge to schedule a comprehensive migration during your next major turnaround.








