NBRA-669C ABB module

NBRA-669C ABB module

On April 5th of this year, the European Union released a draft legislation to revise the 2014 Fluorinated Greenhouse Gas Law, which will strictly control greenhouse gas emissions in the future. Currently, fluorinated gases account for 2.5% of the total greenhouse gas emissions in the European Union. draft

By reducing greenhouse gas emissions containing fluorine, the EU will reduce approximately 40 million tons of carbon dioxide (CO2) emissions equivalent by 2030 and an additional 100 million tons of CO2 emissions equivalent by 2050.

Sulfur hexafluoride (SF6), as a fluorinated greenhouse gas, has been used as an insulating gas in power transmission and distribution equipment for over 35 years, and is widely used in medium voltage gas insulated switchgear. However, SF6 has been criticized as a greenhouse gas and has the potential to contribute to global warming

The Global Warming Potential (GWP) is 23500, which means that 1 ton of SF6 is equivalent to 23500 tons of CO2, with carbon emissions that can persist in the atmosphere for up to 3200 years. With the advancement of technology and the development of the industry, products that replace SF6 with other chemical gases have gradually appeared in the market. Although they

The dielectric strength is equivalent to SF6 and has good environmental characteristics, but its stability is not strong and it is prone to liquefaction at room temperature. Therefore, it needs to be mixed with other gases, which will greatly increase maintenance costs.

MPI can be used to establish a simple network of 32 nodes with a data transmission rate of 187.5 Kbit/s. The CPU can establish up to 64 connections with nodes on the communication bus (C-bus) and MPI.

Note:

When using both PROFIBUS DP and MPI interfaces, only the following bus connectors can be connected to the MPI interface:

With socket: 6ES7 972-0BB42-0XA0

Without socket: 6ES7 972-0BA42-0XA0

PROFIBUS DP interface:

Through the PROFIBUS DP interface, redundant and distributed automation configuration can be achieved, thereby improving speed and facilitating use. For users, distributed I/O is handled as centralized I/O (with the same configuration, addressing, and programming).

PROFINET interface with 2 ports (switch):

Support system redundancy and MRP (Media Redundancy Protocol)

Memory card:

Used to expand the built-in loading memory. In addition to the program itself, the information contained in the loading memory also includes the configuration data of S7-400H F/FH, which is why it occupies double the space in the memory. The result is:

The built-in loading memory cannot meet the requirements of large program volumes, therefore a storage card is needed.

Provided with RAM and FEPROM card (FEPROM is used to save data when the power is disconnected).

Flexible expansion options:

Up to 131072 digital inputs and 81932 analog inputs/outputs.

MPI multi-point interface: