Communication-capable Circuit Breakers

WL Circuit Breaker

External CubicleBUS Modules

By connecting additional, external modules to the CubicleBUS, breaker status information can be displayed and data read from the switchgear to the system. This enables cost-effective solutions to be implemented

for automating other devices in the switchgear.

General

External CubicleBUS modules enable the WL Circuit Breaker to communicate with secondary devices in the switchgear. They can be used, for example, to activate analog displays, transmit circuit breaker status and cause of trip, and read additional control signals. One module is also available for zone- selective interlocking.

Five different CubicleBUS modules can output data from the CubicleBUS system (four digital output modules and one analog output module). A digital input module can transmit data from the switchgear to the MODBUS master, and a ZSI module enables zone selective interlocking among the circuit breakers.

Rotary Switches

With the exception of the configurable output module, all external CubicleBUS modules are configured using rotary switches.

The arrow on the rotary switch points to the function that is currently active. With certain modules (e.g. digital output modules), the group selection (e.g. "1st Module" left; highlighted) and then any other settings (e.g. time delay) must be taken into account. More information on this is provided with the individual module instruction sheets and the WL Instruction Manual.

Installation

The external CubicleBUS modules can be installed onto a standard 35mm DIN rail on the panel.

The cable for connecting the first module to the circuit breaker must be no longer than 2 m.

Prefabricated cables, which can be ordered separately in different lengths, must be used to connect the CubicleBUS modules

to each other and to the circuit breaker. These cables enable the various components to communicate and supply the CubicleBUS modules with 24V DC.

Graphic

In this example, the rotary switch

2-5

has been set to function “0.2”.

Figure

All external CubicleBUS modules have the same housing. The CubicleBUS can be connected

to X1 and X2 with an RJ45 plug or a terminal connection made to X3. This depends on

2-10

whether a COM16 module is available.

 

 

 

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WL MODBUS Communication and Electronic Accessories • January 2005

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Siemens UL 489, UL1066 specifications External CubicleBUS Modules, Rotary Switches, Installation

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.