Breaker Data Adapter (BDA)

WL Circuit Breaker

Operation

As a microcomputer, the BDA is booted in the same way as a PC. This takes approximately 40 seconds and is started automatically when the power supply is switched on. During this time, the content is loaded from the Flash memory to the main memory, an internal self test is carried out, the operating system (embedded Linux) is booted, and the web server application started.

The RESET button on the underside enables the BDA to be restarted manually at any time.

The LEDs indicate the operating status during the boot-up process. The upper DEVICE LED is first red/green, while the lower CubicleBUS LED is red only. After about 10 seconds, this also changes to red/green. During the load process, the Ethernet connection is checked for a connected network. Only then is the appropriate driver loaded. Since the BDA Plus is to be operated with an Ethernet connection, a physical connection to the Ethernet must already exist during the boot-up process.

Meaning of the LEDs on the BDA

LED

Display

Meaning

 

red

BDA out of order

DEVICE

green

BDA in operation

 

red/

BDA booting up

 

green

 

 

 

BDA in online

 

red

mode and

 

connection to

 

 

circuit breaker

 

 

interrupted

 

 

Connection

CubicleBUS

green

exists to

 

 

CubicleBUS

 

red/

BDA booting up

 

green

 

 

 

 

 

 

BDA in offline

 

off

mode, even if

 

 

circuit breaker

 

 

is connected

 

 

 

Table 4-1The LEDs on the BDA indicate the current operating status.

Figure 4-2For temporary operation, the BDA can be connected to the local interface of the trip unit. In this configuration, only the RS232 connection to the PC is typically used.

Figure 4-3In a permanent installation, the BDA should be connected to the last external CubicleBUS module. It can be secured using a DIN rail, as shown above.

4/6

WL MODBUS Communication and Electronic Accessories • January 2005

Page 71
Image 71
Siemens UL 489, UL1066 specifications Operation, Meaning of the LEDs on the BDA

UL 489, UL1066 specifications

Siemens UL1066 and UL489 are essential components in the landscape of electrical equipment, specifically in circuit protection and control. These standards ensure reliability, safety, and efficiency in various applications, including industrial, commercial, and residential settings.

The Siemens UL1066 is primarily focused on disconnect switches. These devices are designed to isolate electrical circuits, ensuring the safety of both personnel and equipment during maintenance or in case of faults. One of the key features of UL1066 disconnect switches is their high breaking capacity, enabling them to handle significant fault currents without failure. This characteristic is crucial in protecting downstream equipment from damage caused by short circuits. The UL1066 switches are also known for their robust construction, often featuring a metal enclosure that enhances durability and environmental resistance. Additionally, these switches can be operated manually or remotely, offering flexibility in operation and control.

On the other hand, Siemens UL489 circuit breakers provide comprehensive protection against overcurrents and short circuits. These devices not only interrupt fault currents but also protect connected devices from damage due to overload situations. Key features of UL489 circuit breakers include adjustable trip settings, which allow users to customize the response to overcurrent conditions based on specific application requirements. This adaptability makes them suitable for a wide range of environments, from large industrial plants to smaller commercial buildings.

Both UL1066 and UL489 products are constructed with advanced technologies, such as thermal-magnetic or electronic trip mechanisms in UL489 devices, ensuring precise and timely interruption of fault currents. These technologies promote energy efficiency and stability within electrical systems. In addition, many of these devices are equipped with indication features, providing clear visual status cues for quick assessment in emergency situations.

In terms of characteristics, both UL1066 and UL489 devices adhere to rigorous testing and certification processes to meet UL standards. This compliance assures users of their performance and reliability. Furthermore, the devices are designed to accommodate a wide range of operating temperatures and environmental conditions, making them versatile choices for various applications.

In summary, Siemens UL1066 and UL489 devices are paramount in ensuring safety and efficiency in electrical circuits. Their advanced features and robust construction make them indispensable in protecting both personnel and equipment in an array of industrial and commercial applications.