To change the Settings and/or Command passwords

1.On the Main Menu, click the Maintenance button. The button will only be displayed if access is allowed with the current login permissions.

2.Click the Modbus Security tab. The Modbus Security screen has options to change both CPU A and CPU B Command and Settings passwords.

NOTE: It is recommended that the passwords in CPU A and CPU B be set to the same value.

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3.Enter the new commands password in the New Password field.

4.Re-enter the password in the Confirm Password field.

5.Click the Change button to download the password.

6.Select the desired Auto Send option.

￿Indicates the Auto Send option will transparently send the password each time a command is sent to the CPU.

￿Disables the Auto Send option.The user will be prompted to enter the password (for the CPU that is currently the default) each time a command is sent.

NOTE: For added security, it is recommended the Auto Send option be disabled. This will require an additional password to be entered each time a command is performed.

4.2.2 Local HMI

An Entellisys system may have multiple HMI stations running. There are some functions that should be performed by one HMI only. The “Local HMI” flag is provided to designate one HMI for special functions.

The “Local HMI” flag affects the following functions:

E-mail on Alarms is only sent from the HMI with the Local HMI flag set.

Time Synchronization is only performed by the HMI with the Local HMI flag is set.

“Block other HMIs” can be enabled/disabled only by the HMI with the Local HMI flag set. This allows a user on the Local HMI to block all other HMIs from issuing control commands (i.e., Breaker Open), which may be desired during maintenance. For details on circuit breaker control, see DEH-231 Entellisys Low Voltage Switchgear System User Manual, Chapter 3, Basic Control.

Modbus® security

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GE DEH-230 manual Local HMI

DEH-230 specifications

The GE DEH-230 is an advanced digital electro-hydraulic control system designed for industrial applications, particularly in power generation and processing sectors. This innovative system is a product of General Electric, a company renowned for its cutting-edge technology and engineering solutions. The DEH-230 is specifically engineered for steam turbines, gas turbines, and hydro turbines, providing exceptional control and reliability.

One of the standout features of the DEH-230 is its modular architecture. This design allows for flexibility and scalability, making it suitable for a wide range of applications. The system can be easily integrated into existing setups, accommodating different sizes and types of turbine controls. This modular approach also simplifies maintenance and upgrades, ensuring that facilities can adapt to changing operational needs.

In terms of technology, the GE DEH-230 employs highly sophisticated algorithms for precise control of turbine operations. The system utilizes advanced signal processing techniques and real-time data analytics to optimize performance. This capability helps in enhancing efficiency and reducing emissions, aligning with the global push for more sustainable energy solutions.

The DEH-230 also features robust communication protocols that facilitate seamless integration with various industrial control systems. This interoperability ensures that operators can achieve optimal control and monitoring of turbine operations within a centralized platform. The system is equipped with graphical user interfaces that enhance the user experience, making it easier for operators to adjust parameters and respond swiftly to operational demands.

Another important characteristic of the DEH-230 is its reliability. Built with high-quality components, the system is designed to withstand harsh operational environments, ensuring minimal downtime and consistent performance. With redundant systems and fail-safe mechanisms in place, it provides an added layer of security, which is critical in power generation applications.

Finally, the GE DEH-230 is backed by GE’s extensive support and service network. This ensures that users have access to expert assistance and resources whenever needed, contributing to the overall value proposition of the system. By combining advanced technology with dependable service, the DEH-230 stands out as a leading solution for modern turbine control needs.