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- H1 Fieldbus I/O Interface Card
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Product Overview
The Emerson VE4017 is a DeltaV M-series H1 Fieldbus I/O Interface Card used to connect FOUNDATION Fieldbus instruments to a DeltaV distributed control system. Rather than handling conventional point-to-point analog signals, it provides a digital communication interface for field devices that exchange process variables, configuration data, and diagnostic information over an H1 fieldbus segment.
This arrangement is useful in process plants where several intelligent instruments share a communication trunk. For example, a chemical processing unit may use fieldbus-enabled pressure transmitters, temperature instruments, and valve positioners around a reactor or pipeline. The VE4017 connects the fieldbus segments to the DeltaV control environment, allowing configured device data to participate in monitoring and control strategies.
The card supports two H1 ports, with up to 16 field devices per port under the specified configuration. This allows multiple instruments to communicate through the same interface card rather than requiring an individual conventional I/O channel for every measurement. The actual number of devices supported in an installation depends on segment power, device loading, network design, and the control-system configuration.
The VE4017 also supports FOUNDATION Fieldbus function blocks, enabling compatible field devices to provide more than basic process measurements. Depending on the instrument and application, the control system can access additional status information and device diagnostics that help operators identify communication problems or instrument faults.
Installation requires the appropriate M-series H1 terminal block, fieldbus power supplies, segment wiring, and termination. Each H1 segment must be engineered according to FOUNDATION Fieldbus requirements. When replacing an existing card, engineers should verify the precise hardware revision, terminal-block type, DeltaV software version, and fieldbus configuration before installation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | VE4017 |
| Product Family | DeltaV M-series |
| Product Type | H1 Fieldbus I/O Interface Card |
| Communication Technology | FOUNDATION Fieldbus H1 |
| Number of Ports | 2 |
| Maximum Field Devices | 16 per port, subject to segment design |
| FOUNDATION Fieldbus Function Blocks | 96 per card |
| Nominal Fieldbus Signaling | IEC 61158-2 |
| Fieldbus Communication Rate | 31.25 kbit/s |
| Field Circuit Power Range | 9–32 V DC |
| Field Circuit Current | 12 mA per channel, as specified |
| LocalBus Supply | 12 V DC nominal |
| LocalBus Current Consumption | 200 mA typical, 300 mA maximum |
| Channel Isolation | Each channel isolated from the system and from the other channel |
| Isolation Test Voltage | 1500 V DC |
| Fieldbus Power Supply | External fieldbus power supply required for each segment |
| Segment Termination | Required at both ends of each segment |
| System Platform | DeltaV M-series |
| Software Compatibility | Current M-series H1 interface cards supported on DeltaV v10.3.1 and later; verify exact card revision |
| Dimensions | 107 × 41 × 105 mm |
| Weight | 0.3 kg |
Product Features
- Dual H1 ports: Connects two FOUNDATION Fieldbus segments through one interface card.
- Multidrop communication: Supports multiple compatible field instruments on each port, reducing the need for individual conventional I/O connections.
- Digital instrument data: Provides access to configured process variables and supported field-device information.
- Function block support: Accommodates FOUNDATION Fieldbus function blocks used by compatible devices and control strategies.
- Channel isolation: Separates each channel from the system and from the other channel, with a specified 1500 V DC isolation test.
- Device diagnostics: Makes supported field-device status and diagnostic information available to the DeltaV environment.
- M-series integration: Fits the DeltaV M-series I/O architecture through the appropriate terminal-block arrangement.
- Segment-based wiring: Uses fieldbus trunk-and-drop wiring with suitable power and termination components.
Working Principle
The VE4017 connects FOUNDATION Fieldbus H1 instruments to the DeltaV M-series control system. Each H1 port communicates with devices on its associated fieldbus segment, allowing multiple instruments to exchange digital information through a shared communication path.
A typical arrangement is:
Field Instruments → H1 Fieldbus Segments → VE4017 Interface Card → DeltaV Control System → Operator Workstation
A field instrument measures a process variable or performs an assigned function and makes the relevant data available over the H1 network. The VE4017 interfaces that segment with the DeltaV system, where configured device data can be used in control strategies, displays, alarms, and process monitoring.
FOUNDATION Fieldbus differs from conventional analog I/O because it supports digital communication between intelligent devices and the control system. Depending on the instrument, the available information may include the primary measurement, additional variables, operating status, and diagnostic data. The control application determines which information is used and how it affects the process.
The H1 network operates at 31.25 kbit/s. Each segment requires suitable fieldbus power and termination at both ends. The segment design must account for instrument current consumption, cable length, wiring topology, and the number of connected devices. Exceeding the electrical or communication limits of a segment can lead to intermittent communication or device dropouts.
The VE4017’s two ports allow the system to separate instruments into two fieldbus segments. For instance, a plant may place pressure and flow instruments on one segment and valve positioners on another. Separating devices in this way can make field wiring and troubleshooting easier, although the final arrangement should reflect the control strategy and fieldbus engineering requirements.
The card provides the communication interface; it does not independently determine the process-control strategy. DeltaV configuration, device descriptions, function block assignments, and controller logic determine how instrument data is interpreted and used.
Role in the DeltaV Control Architecture
Within a DeltaV M-series installation, the VE4017 occupies the fieldbus interface layer between intelligent field instruments and the control system. It allows FOUNDATION Fieldbus devices to exchange process data and supported diagnostic information without requiring every instrument to use a separate conventional analog input channel.
FOUNDATION Fieldbus Instruments → H1 Segment → VE4017 → DeltaV Controller and Control Strategy → Operator Interface
| System Element | Function |
|---|---|
| VE4017 Interface Card | Connects H1 fieldbus segments to the DeltaV M-series system |
| H1 Port 1 | Communicates with devices on the first fieldbus segment |
| H1 Port 2 | Communicates with devices on the second fieldbus segment |
| FOUNDATION Fieldbus Instruments | Supply process measurements, device status, and supported diagnostic information |
| H1 Terminal Block | Provides the required field wiring termination for the card |
| Fieldbus Power Supply | Supplies power to the connected fieldbus segment |
| Segment Terminators | Maintain the required electrical characteristics of each H1 segment |
| DeltaV Controller | Uses configured device data in the process-control strategy |
| DeltaV Operator Workstation | Displays process values, alarms, and available device information |
Industrial Applications
| Application | Typical Use |
|---|---|
| Chemical Processing | Connecting pressure, flow, and temperature instruments to the DeltaV control system |
| Oil and Gas Facilities | Integrating compatible fieldbus transmitters and valve positioners into process monitoring |
| Refinery Units | Grouping intelligent instruments into fieldbus segments for process control |
| Pharmaceutical Production | Communicating with supported field instruments in automated process equipment |
| Water and Wastewater Treatment | Collecting digital measurements from compatible process instruments |
| Power Generation | Connecting fieldbus-enabled instruments used in auxiliary process systems |
| Batch Processing | Providing configured field-device data for batch monitoring and control |
| Distributed Process Plants | Separating field instruments across two H1 segments |
| Instrumentation Retrofit Projects | Integrating compatible FOUNDATION Fieldbus devices into an existing DeltaV M-series architecture |
| Process Instrument Diagnostics | Making supported instrument status and diagnostic information available to operators and maintenance personnel |
Installation and Maintenance
- Verify the card identity: Confirm the VE4017 model and exact hardware revision against the existing DeltaV configuration before installation.
- Check software compatibility: Confirm that the installed DeltaV software version supports the specific H1 interface card revision.
- Use the correct terminal block: Match the card to the appropriate M-series H1 terminal block and verify the field-wiring keying arrangement.
- Inspect fieldbus power supplies: Ensure that each H1 segment has a suitable power supply with adequate capacity for the connected instruments.
- Check segment termination: Verify that each fieldbus segment has the required terminators at both ends.
- Review the wiring topology: Confirm cable routing, trunk-and-drop connections, shield arrangements, and device connections against the approved fieldbus design.
- Calculate segment loading: Check the combined current requirements of connected instruments and ensure that the segment remains within its electrical limits.
- Verify device addresses: Confirm that field-device addresses and configuration settings are appropriate for the segment.
- Inspect communication status: After installation, check the DeltaV diagnostics and confirm that the expected devices are communicating.
- Validate instrument data: Compare displayed process values with instrument readings or other approved references before relying on the data in the control strategy.
- Review diagnostic alarms: Investigate device communication errors, segment power problems, and instrument faults before returning affected equipment to normal operation.
- Document the installation: Record the card revision, terminal-block type, DeltaV version, segment layout, connected devices, and commissioning results for future maintenance.
Compatible System Components
| Component | Function |
|---|---|
| DeltaV M-series I/O Subsystem | Provides the hardware framework for integrating the H1 interface card |
| Compatible M-series H1 Terminal Block | Provides the required field wiring connections for the VE4017 |
| FOUNDATION Fieldbus H1 Instruments | Supply process measurements, status information, and supported device diagnostics |
| Fieldbus Pressure Transmitters | Measure pressure and communicate digital process data |
| Fieldbus Temperature Transmitters | Supply temperature measurements and supported instrument status |
| Fieldbus Flow Transmitters | Provide flow measurements for monitoring and control |
| FOUNDATION Fieldbus Valve Positioners | Receive configured commands and report supported position and diagnostic data |
| Fieldbus Power Supplies | Supply power to the connected H1 segments |
| H1 Segment Terminators | Provide the required termination at each end of the fieldbus segment |
| FOUNDATION Fieldbus Trunk and Drop Cables | Connect the fieldbus instruments to the segment |
| DeltaV Controller | Executes the configured process-control strategy |
| DeltaV Engineering and Operator Software | Supports system configuration, monitoring, and diagnostic functions |
Recommended Related Models
| Model | Product Type | Selection Consideration |
|---|---|---|
| Emerson VE4037P0 | Redundant M-series H1 I/O Interface Card and Terminal Block | Consider when the installation requires a redundant H1 interface arrangement |
| Emerson VE4052M0 | M-series Fieldbus H1 Carrier without Enclosure | Used in a different fieldbus I/O arrangement involving compatible M-series digital I/O cards |
| Emerson VE4052M1 | M-series Fieldbus H1 Carrier with Enclosure | Provides the enclosed version of the M-series H1 carrier arrangement |
| Emerson KJ3242X1-BA1 | Earlier-generation H1 interface option | May be relevant when evaluating compatibility with earlier DeltaV software installations; confirm the exact hardware and system requirements |
| Emerson KJ3242X1-BA2 | Earlier-generation H1 interface option | Another earlier-generation option to assess for legacy DeltaV configurations |
Key Advantages
- Connects two FOUNDATION Fieldbus H1 segments to a DeltaV M-series system.
- Supports multiple intelligent field instruments on each segment.
- Makes configured process data and supported device diagnostics available to the control system.
- Provides channel isolation between the system and the individual fieldbus channels.
- Supports digital field-device integration without requiring a separate conventional analog input for every instrument.
- Fits modular process-control architectures using compatible M-series hardware.
Technical FAQs
How many field instruments can the VE4017 connect?
The VE4017 supports two H1 ports, with up to 16 field devices per port under the specified configuration. The actual number that can operate on a segment depends on power-supply capacity, cable characteristics, device loading, network design, and the control-system configuration.
Does the VE4017 supply power to the H1 fieldbus segments?
The VE4017 requires external fieldbus power supplies for its H1 segments. Each segment must have a suitably rated power supply and the required termination at both ends. The power design should account for the combined current consumption of all connected instruments.
What should be checked when replacing a VE4017 in an existing DeltaV system?
Verify the exact card revision, DeltaV software compatibility, terminal-block type, fieldbus wiring, segment power, termination, and connected-device configuration. After replacement, confirm that the expected instruments communicate and that process values and diagnostic information are available to the control strategy.
Can the VE4017 be used as a redundant H1 interface?
The VE4017 is the standard M-series H1 interface model, so redundancy requirements must be assessed separately. Emerson identifies VE4037P0 as a redundant M-series H1 I/O interface card and terminal-block arrangement. Confirm the required hardware configuration, system support, and installation design before selecting a redundant solution.