Reference Manual

00809-0100-4690, Rev EA March 2007

Rosemount 2088 and 2090

Figure 3-10. Rosemount 2088 Smart Signal Wiring Terminals.

FAILURE MODE AND SECURITY JUMPERS

Failure Mode

Positive

Negative

Test

As part of normal operation, the Rosemount 2088/2090 Smart Pressure Transmitter continuously monitors its own operation. This automatic diagnostic routine is a timed series of checks repeated continuously. If the diagnostic routine detects a failure in the transmitter, the transmitter drives its output either below or above specific values depending on the position of the failure mode jumper or switch.

The values to which 4–20 mA transmitters drive their output in failure mode depend on whether they are factory-configured to standard or NAMUR-compliant operation. The values for each are as follows:

Standard Operation

Linear output: 3.9 ≤ I ≤ 20.8 mA

Fail low: I ≤ 3.75 mA

Fail high: I ≥ 21.75 mA

NAMUR-Compliant Operation (Option Code C4)

Linear output: 3.8 ≤ I ≤ 20.8 mA

Fail low: I ≤ 3.6 mA

Fail high: 21.0 ≤ I ≤ 23.0 mA

To determine the failure mode configuration of your transmitter, review the failure mode options using a 275 HART Communicator.

NOTE

The failure mode configuration, whether standard or NAMUR-compliant, is configured at the factory and can not be changed in the field.

Jumper Locations

Without a meter installed

The failure mode alarm jumper is located on the front side of the electronics module just inside the electronics housing cover and is labeled ALARM (See Figure 3-11). Do not remove the transmitter cover in explosive atmospheres when the circuit is alive. Both covers must be fully engaged to meet explosion-proof requirements.

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Emerson Process Management 2088, 2090 manual Failure Mode and Security Jumpers, Jumper Locations
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2088, 2090 specifications

Emerson Process Management, a global leader in process automation and control solutions, has developed a series of advanced controllers including the 2090 and 2088 models. These controllers are integral to modern industrial applications, enhancing operational efficiencies and ensuring precise control over processes.

The Emerson 2090 controller is renowned for its high performance and reliability. It supports both continuous and batch processes, making it versatile for various industrial environments. One of its main features is its modular architecture, which allows for easy scalability and customization according to specific operational needs. The controller is equipped with advanced communication capabilities, supporting multiple protocols such as Modbus, Ethernet/IP, and Profibus, ensuring seamless integration with existing systems.

The 2090 also boasts sophisticated data processing abilities. It employs predictive analytics, enabling users to forecast potential issues and optimize process performance before disturbances occur. With its intuitive user interface and graphical programming environment, operators can design control strategies easily, significantly reducing programming time and enhancing user experience.

On the other hand, the Emerson 2088 controller offers a powerful yet cost-effective solution for smaller-scale applications. Designed for simplicity and ease of use, it contains essential control features while maintaining flexibility. It supports a variety of input and output modules, allowing for extensive configuration options to meet specific requirements. The 2088 is particularly noted for its reliability in extreme conditions, making it an ideal choice for demanding environments.

Both the 2090 and 2088 controllers utilize Emerson’s latest technologies, including advanced algorithms for PID control, and they support redundancy options for critical applications. The emphasis on cybersecurity in both models further ensures safe operation, protecting sensitive data and control systems from potential threats.

These controllers exemplify Emerson's commitment to innovation, efficiency, and reliability in process management. Their robust design and advanced features cater to a wide range of industries, including oil and gas, chemical processing, and water treatment. As industry standards evolve, Emerson continues to lead the charge by integrating cutting-edge technologies into their controller solutions to meet the ever-changing demands of process automation.
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