Product Introduction

GE 336A4940LBP46 is an Ethernet switch used in the Mark VIe safety control system designed by General Electric (GE). The switch is designed to meet the needs of real-time industrial control solutions.

Overview of control system functions
Mark VIe is an advanced power control system that is widely used in thermal power plants, gas turbine power plants, and other industrial facilities. As a component in Mark VIe, GE 336A4940LBP46 Ethernet switch plays an important role in the operation of the entire control system. It helps to achieve data transmission and communication within the system, ensure the normal operation of the entire power control system, and enable the control system to effectively control and manage facilities such as thermal power plants and gas turbine power plants.

Ethernet connection function
Like other components in the Mark VIe series, GE 336A4940LBP46 Ethernet switch supports Ethernet connection. This Ethernet connection function is the key to achieving communication between devices. For example, it can enable the controller to be seamlessly integrated with other control systems (such as Mark VI, Mark VIe or EX2100 excitation control system), and realize communication with maintenance stations and operator stations, so as to achieve remote monitoring and control functions.
Through Ethernet connection, it can receive and send various data, including monitoring data from sensors (such as temperature, pressure and other data) and send control instructions to execution devices (such as valves, pumps, etc.), ensuring smooth information exchange between various parts of the system.

The role of data transmission in the Mark VIe system
In the Mark VIe system, the GE 336A4940LBP46 Ethernet switch is responsible for transmitting data between different devices. For example, when it comes to analog I/O modules (such as IS220PAICH2A), it can transmit the data collected by the analog I/O module to other parts of the control system, and it can also transmit the command data issued by the control system to the analog I/O module, thereby ensuring the normal operation of the system input and output. The data of the analog I/O module may involve the operating parameters of the device (such as the analog data of the device's current, voltage, etc.). The accurate transmission of this data in the system through the Ethernet switch is crucial to the stable operation of the entire system.

The switch is unmanaged, which means that it does not require a separate device to configure or manage its operation. It can operate in a temperature range of -40 to 70°C (-40 to 158°F) and can be powered by redundant 18 to 36 V DC power supplies.

The switch supports a store-and-forward architecture, providing high data confidence. It also provides a soft-start feature that limits inrush current to less than 200% of normal operating current.

The switch can be mounted on a DIN rail for installation. Seven screw holes are available on existing switches to support panel mounting.

The switch uses SFP with LC connectors to connect single-mode fiber cables for new installations. GE recommends replacing MMF with SMF. Otherwise, the network will be degraded to running at only 100 MB speed.

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