Month: June 2025

The concept of security zoning is described in IEC62443. In short,

security zoning is a method to segment a system into zones with

different security levels. A security level is complied with by

implementing a combination of security counter measures. The

reason why it potentialy could make sense to divide a system into

security zones, which comply with different security levels, could be

that the risk for different parts of the system varies. Another could be

that the impact of a potential incident varies.

Features and benefits

• NE870 has a redundant power supply and alarm function

• Wide operating voltage range (16 VDC to 60 VDC)

• Back end holds a casted DIN clip for stable mounting on a DIN-rail

• Digital IO for monitoring

• Console port for management using CLI

• USB port for easy save and load system configuration

• 3 x RJ-45 10/100/1000 Ethernet TX connectors

• 8 x RJ-45 10/100 Ethernet TX connectors

• Status LED‘s

The Solution

The use of a Contrac continuous electric actuator ensures ideal positioning of the water spray control valve.

Even high temperature models with ambient temperatures up to 85 °C can achieve S9-100 % duty cycles without restriction.

The special design of the Contract actuator, with oil-lubricated spur gears and electrical components for S9-100 % duty cycles, allows high precision in the positioning of the sprinkler valve.

High precision and true continuous positioning of the water spray valve is achieved.

Due to the special design and operating principle of the Contrac actuator, the dead band is only ±0.05 %.

This precision allows for highly accurate positioning of all types of valves over the entire range.

All components are IP66 rated and can be used even under the harshest environmental conditions.

CONTEC motorized linear actuator type RSD with power electronics unit EBN853

Oil-lubricated spur gears with ball bearing spindles ensure

– wear-free operation

– Max. operating temperature 85 °C

– Robust design

– Precise control of the injected water by means of high-precision positioning

– IP rating IP66

Contrac – Electric Actuators

Introduction

The water injection valve on a steam boiler controls the amount of cooling water injected into the superheated steam in the superheater and reheater.

The amount of water injected is decisive for the temperature of the steam inside and at the output of the superheater.

Too much water injection can lead to excessive cooling of the steam, which negatively affects efficiency.

On the other hand, insufficient water injection leads to excessive steam temperature and pressure.

The risk of damage to the superheater, turbine and downstream components increases as a result.

For optimal operation of the superheater at the lowest possible steam temperature and the highest possible hot steam temperature, the

continuous and precise mass flow control of the injected cooling water is first required.

Depending on the operating conditions, this requirement means that very small amounts of water need to be supplied, thus requiring highly accurate positioning in disproportionate areas of the valve.

The operating environment is extremely harsh.

In addition, the ambient temperature in the superheater area can be very high.

ABB’s measurement and analysis portfolio

– Analytical Measurement

– Flow measurement

– Pressure measurement

– Temperature measurement

– Level measurement

– Actuators and Positioners

– Recorders and Controllers

– Device Management, Fieldbus and Wireless

– Force Measurement

– Services

ABB’s extensive line of damper actuators provides quality, robustness and performance for a wide range of industries, especially power utilities.

They excel in applications where precise control and speed can save fuel costs or improve efficiency, such as forced and induced draft dampers.

They utilize powerful digital technology to provide precise control and built-in diagnostics.

Meeting your valve control needs Starting with electrical actuators, ABB offers a comprehensive range of products that are designed, engineered and manufactured to deliver best-in-class performance for your process.

ABB’s extensive portfolio of actuators and positioners provides your control valves with the highly accurate and stable positioning that is critical to achieving your operational goals:

– Energy efficient processes

– High production quality

– Reliable performance

– Maximum output at minimum cost

How can ABB help you?

ABB provides all the final control components you need, including

– Continuous electric actuators

– Tools to select the best actuation technology for your process

– Technical support and servicesLearn how you can benefit!

Measurement made easy

To run any process efficiently, measurement, execution, recording and control are essential,

Record and control. By choosing ABB, you are choosing a partner that can provide the best measurement and analysis solutions for your needs.

thereby maximizing the return on your investment. When you invest in ABB’s measurement and analysis solutions, you get the best technology, reliability and service in the industry.

R&D is a key source of ABB’s technological leadership.

ABB is constantly developing new applications based on existing technologies and continues to develop the breakthrough technologies needed to meet the challenges of the future.

ABB is constantly developing new applications based on existing technologies and continues to develop the breakthrough technologies needed to meet the challenges of the future.

Comprehensive measurement solutions Tailored to each industry

ABB’s measurement and analytics products provide world-class measurement solutions for any industry, utility or municipality. Latest

Innovations provide technical solutions that make running your plant easier.

ABB’s measurement and analysis products are based on universal technology, offering a common look and feel and method of operation. As a result, products are easy to configure, easy to integrate and easy to maintain.

Areas of application

The REG216 is used to protect generators and transformers.

The modular hardware and software design allows extremely flexible installation.

The combination of software libraries and hardware allows simple adaptation to the size of the primary system and the required protection scheme.

The combination of software libraries and hardware modules allows easy adaptation to the size of the primary system and the required protection scheme.

Modules. As a result, economical solutions can be realized in a wide range of applications.

Economical solution.

The REG216 software system provides a library of protection functions. The following table lists the functions applicable to generator and transformer protection.

Different levels of redundancy can be selected.

The availability and reliability of the protection can be selected according to the application in the following ways

For example, the auxiliary power supply unit for the entire system can be replicated.

Standard interfaces make the REG216 compatible with different process control systems.

Data can be exchanged with higher process control levels, e.g. for one-way reporting of digital status and events, measured values and protection parameters.

The REG216 and REG216 Classic differ in their binary process connection:

– The REG216 uses the E/A module 216GD61a.

– REG216 Classic uses modules 216GE61 / 216GA61 and 216GA62.