Data collection, concentration and visualization

The D400 Substation Data Manager, when operating as a SCADA host, collects, filters, and sorts data from a wide range of intelligent devices (RTUs, relays, meters) in the substation and preserves original data time stamp for accurate sequence of event. Data can be presented to multiple SCADA hosts. The D400 comes with a built-in suite of protocols and security applications to facilitate communication with various substation devices and SCADA hosts, including:

• DNP3 serial and TCP/IP (client & server)
• IEC 61850 (client)
• Modbus serial & TCP/IP (client & server)
• IEC60870-5-101/103/104 client
• IEC60870-5-101/104 server
• SELFast Meter/SEL ASCII
• Hydran Host
• GE Vernova modem
• Generic ASCII protocols

IEC 61850 Gateway

The IEC 16850 Client application allows the D400 to act as a powerful IEC 61850 data concentrator. The D400 also includes valuable features such as Dynamic Data Sets, Buffered Control blocks, Enhanced Security controls.

Device Redundancy (Hybrid Model)

Dual D400 units can be deployed creating a redundant system where accumulators, SOE logs, and configurations are automatically synchronized between the two systems. Serial communication links are automatically switched between the units based on system health.

The D400 100Base-FX redundant Ethernet card enables automatic switchover between two sets of Ethernet switches ensuring there is no single point of failure in the system.

D400 now supports PRP by actively communicating on two physical Ethernet ports connected to two independent network LANs simultaneously. PRP allows systems to overcome any single network failure without affecting the data transmission. It provides seamless failover redundancy.

The D400 supports three modes of operation:

• Standalone
• Warm standby and
• Hot standby

The D400 can be configured to operate in one mode at any given time.

Built in Media Conversion

The D400 supports various communication media types—Serial: RS-232, RS-485, Glass Fiber, and Plastic Fiber; and Ethernet: 10/100Base-T, 10Base-FL, and 100Base-FX. Hot swappable communications modules eliminate the need for dongle type media converters used to convert to glass or plastic fiber, reducing total cost of deployment.

The D400 acts as the centralized, rugged computing platform in advanced Automation systems. Using the calculator tool and/or GE Vernova's programmable logic (LogicLinx), users can create custom automation programs for a variety of applications such as:

• Sequence switching
• Interlocking
• Auto-sectionalizing
• Autoreclosing
• Load Tap Changer Control
• Capacitor Bank Control
• Reactor Switching
• Alarm grouping

HMI, one-line viewer & Annunciator

The D400 supports a web based HMI/Annunciator feature, that is accessible remotely, using a standard Internet browser or locally, through a direct connection to the unit. Users have access to all data points in the systems, alarm screens, communications status screens ,and dynamic One-Line diagrams, all through the secure web interface.

The web based HMI supports the following security features to ensure secure remote or local access:

• Configurable auto logout/login for Remote and Local HMI access Disabling of Remote HMI Non-Observer Privileges
• Login to specific custom screens for added security to sensitive displays
• Remote access to Redundant or Active HMI screens
• Support for forcing points from one line diagram

Web based HMI/Annunciator feature, that is accessible using a standard Internet browser or through a VGA monitor and USB keyboard/mouse attached directly to the unit.

Mathematical Control Logic

Using the Calculator tool, users can create advanced solutions that group, manage and control points to produce the required automation results. The calculator tool can perform mathematical, logical, or timer based operations on any data points stored in the D400. Using a graphical interface, users can define logical expressions using mathematical functions such as; addition, multiplication, logarithm, greater than, less than, as well as other boolean functions.

Programmable Logic (LogicLinx)

For more advanced applications, programmable logic (LogicLinx) software provides PLC functionality on the D400 platform. LogicLinx offers textual and graphical languages as defined in the IEC 61131-3 standard for PLC programming environments, including Sequential Functions Chart, Instruction List, Structured Text, Ladder Diagram and Function Block Diagram. In addition, a wide range of arithmetic, Boolean and logical operations are supported.

You can also retrieve downloaded records from the D400 using any FTP/SCP/SFTP client as needed or on a scheduled basis.

ARRM supports a configurable interval for polling connected devices. This can be activated or deactivated through the runtime viewer display screen.

The connection status of the devices, in addition to the data retrieved from the IEDs can also be displayed or made available directly to the Tarigma Grid Enterprise Manager (GEM) software.

The D400 fault recording capability allows system event information to be collected and viewed using a web-based trend viewer.

In addition to the data logging capability within the D400, users can configure the D400 to record and generate online and offline reports from operational and non-operation analog data. While online reports can be retrieved instantly and are an extension of the data logger periodic reports, offline reports can be retrieved daily, weekly or monthly.

Offline Reports:

• Users can use the Analog report application to generate offline reports
• Users can configure different types of analog reports. For example: Shift, daily, weekly and monthly
• Users can use the offline report viewer to view generated reports
• Output format types includes: PDF, Excel and HTML

Offline Reports

• This is an extension of the data logger periodic reports
• Users can use the online report viewer to view periodic data logger reports
• Output format types includes: PDF, Excel and HTML

Report Configuration Steps

• Create report template using iReport Designer
• Import template to D400
• Configure Offline Reports

Types of Offline Reports and Key Parameters:

D400 provides robust security environment, providing seamless integration with existing IT department policies. Role based Access Control, Secure Web Interface, Secure File Transfer, and extensive user activity logging provide a complete security toolkit required to achieve NERC-CIP compliance.

Non-operational Data

Using pass-through connections, the utility user can extract valuable non-operational data such as digital fault recording (DFR) records and event files. The user can also access the historical log files and upload the archived data for trending and analysis.

Pass-through/Terminal Server

A built-in terminal server emulator allows pass-through connections to be initiated to substation device (relay, meter, RTU or other device). Once the connection is established, the local event records can be uploaded from the substation devices and viewed remotely. Remote access can be secured with TLS or SSH.

Virtual Serial Ports

Virtual serial ports eliminate copper wire communications to feeder bays when a serial-only device is located in the bay. A small terminal server can be placed in the bay and connected to the Ethernet network, allowing all D400 serial client applications to connect directly to the serial device.

Role Based Access Control

Role Based Access Control is achieved using LDAP, TACACS+, RADIUS or the D400’s internal database; ensuring only authenticated and authorized users gain access the system. When using LDAP, TACACS+, or RADIUS, revoking user privileges, system wide, is as simple as updating the centralized user database.

Network security protocols:

• HTTPS
• SSH
• SCP
• Syslog
• SFTP
• CHAP
• SFTP
• CHAP
• RADIUS
• TACACS+
• LDAP

Built-in Firewall

Multilin D400 is equipped with a built-in firewall for enhanced gateway cyber security. D400's firewall is designed to drop unsolicited or invalid routed packages. The firewall is preconfigured to block outbound traffic on external interfaces and inbound traffic on both internal and external interfaces. The D400 automatically generates rules allowing inbound traffic on internal interfaces for all configured services. The rules are user configurable for inbound/outbound traffic customization.

HMI, One Line & Annunciator

The Multilin D400 supports a web based HMI/ Annunciator feature, that is accessible using a standard Internet browser or through a VGA monitor and USB keyboard/mouse attached directly to the unit. Users have access to all data points in the systems, alarm screens, communications status screens and dynamic one line diagrams, all through the secure web interface.

The D400's web based HMI supports the following security features to ensure secure remote or local access:

• Configurable auto logout/login for Remote and Local HMI access
• Disabling of Remote HMI Non-Observer Privileges
• Login to specific custom screens for added security to sensitive displays
• Remote access to Redundant or Active HMI screens

Not finding the Gateway or RTU that you’re looking for? View legacy gateway & RTU products.

The D.20 RIO Distributed I/O Controller is a small form factor stand-alone device that supports two D.20 link channels for communication with the D20 series of input / output modules.

• Interface with standard D20 I/O (status, analog input, control and combination input) peripheral modules
• Support for up to 30 I/O modules in a single D.20 RIO, or distributed over up to four D.20 RIO devices within the substation
• Small form factor with multiple mounting options for installation flexibility: 19" Rack, panel mount or DIN Rail

Use the D.20 RIO module to install input / output modules in the substation LAN. No substation LAN? No problem, connect the optional D.20 RIO device directly to the built-in D400 Ethernet switch.

Front Panel 

Back Panel

The Multilin D20MX supports a comprehensive set of security functions to allow a seamless integration with existing IT department policies. Built-in cyber security features, such as Remote Authentication Dial-In User Service (RADIUS), Role Based Access Control (RBAC), and user activity logging, provide a complete security toolkit required to enable simpler and more efficient compliance with NERC-CIP requirements, using open and trusted standards and protocols, that allow integration with modern cyber security systems and tools.

Backwards Compatibility with Earlier Vintages of Multilin D20 RTUs

The Multilin D20MX is an embedded single board computer powered by a 667 MHz PowerQUICC II Pro processor pin-for-pin compatible unit with existing D20 Processors and accessories, such as chassis, D20 remote I/O peripherals, modems.

Fully Equipped Out-of-the-Box

Previous generations of D20/D200 RTUs required add-on system components and software to support Ethernet communications and optional memory expansion. The new D20MX is equipped by default with integrated memory, 10/100/1000BASE-TX or 100BASE-FX IEEE 802.3 compliant communications and a core load firmware with a comprehensive set of key substation automation applications.

A complete family of substation hardened I/O modules makes the D20MX controller scalable to both large and small substations. A distributed architecture with both ring and star topologies allows for easy expandability and remote placement of I/O modules. The following I/O modules are available in a variety of models with I/O ranges up to 300VDC.

I/O with DNP Communication

The DNP I/O modules are data collection and control devices that combine the DNP 3.0 communications protocol with our existing industry proven and robust line of I/O modules. The DNP I/O modules implement the industry standard DNP 3.0 (Level 2) slave protocol over a single RS485 interface to provide expandable I/O functionality for the D400, D25 and iBox product lines, as well as third-party products.
The following DNP I/O modules are available: