VE4012S2B1 EMERSON

Description

The VE4012S2B1 is an 8-channel analog output (AO) module from Emerson, specifically designed for 4-20 mA current outputs with HART (Highway Addressable Remote Transducer) communication capabilities. It is part of Emerson’s M-series of intrinsically safe I/O modules, often used within their DeltaV™ distributed control system (DCS) for applications requiring reliable and safe analog signal transmission to field devices in hazardous areas. This module comes equipped with an I/O terminal block for simplified field wiring.

Application Scenarios

Consider a petrochemical plant where precise control of various process valves located in a Zone 1 hazardous area is essential for maintaining stable and safe operations. The Emerson VE4012S2B1 module, installed in a safe area and connected through appropriate intrinsic safety barriers, can provide the necessary 4-20 mA control signals to these valves. The integrated HART communication allows for bidirectional digital communication with the intelligent valve positioners, enabling remote configuration, diagnostics, and asset management without requiring separate wiring. This capability streamlines commissioning, improves maintenance efficiency, and provides valuable insights into the health and performance of the final control elements in the hazardous environment.

Parameter

Main Parameters Value/Description Product Model VE4012S2B1 Manufacturer Emerson Product Category Analog Output (AO) Module – Intrinsically Safe Series M-series Number of Channels 8 – Provides eight independent analog output channels. Output Signal Type 4-20 mA – Standard industrial current output signal. HART Communication Supported – Enables digital communication over the analog signal wires. Intrinsically Safe Yes – Designed for use in hazardous areas when used with appropriate barriers. Resolution Typically 16 bits – Provides high accuracy for analog output signals. Update Rate Consult datasheet – The speed at which the module updates its output signals. Isolation Channel-to-channel and channel-to-backplane isolation – Enhances system robustness. Termination I/O Terminal Block – Facilitates easy and secure field wiring connections. Power Supply Powered by the DeltaV™ system backplane.

Technical Principles and Innovative Values

Innovation Point 1: Integrated HART Communication. The VE4012S2B1 allows for simultaneous analog control and digital communication with HART-enabled field devices over the same two wires. This reduces wiring complexity and enables advanced device diagnostics and configuration from the control room.
Innovation Point 2: Intrinsically Safe Design. As part of the M-series, this module is designed to be intrinsically safe when used with appropriate barriers, ensuring reliable operation in hazardous areas without the risk of ignition.
Innovation Point 3: High Channel Density. With 8 analog output channels, the module provides a high density of control points, reducing the overall footprint and cost of the I/O subsystem.
Innovation Point 4: Seamless DeltaV™ Integration. Being an Emerson module, the VE4012S2B1 seamlessly integrates with the DeltaV™ DCS, offering easy configuration, diagnostics, and data access within the control system environment.

Application Cases and Industry Value

In a pharmaceutical manufacturing plant, precise control of flow rates in a solvent delivery system located in a classified area is critical for batch consistency and safety. The Emerson VE4012S2B1 modules, in conjunction with intrinsically safe barriers, provide the 4-20 mA control signals to the flow control valves. The HART communication capability allows technicians to remotely calibrate the flow meters and valve positioners, reducing the need to enter the hazardous area for routine maintenance. The high accuracy of the analog outputs ensures precise flow control, leading to consistent product quality and reduced material waste. The integrated diagnostics available through HART also help in proactively identifying and addressing potential issues before they lead to process disruptions.