The ZSI module must be the first external module to be connected, if used.

If the BDA is connected to the front interface of the trip unit, the cable must be no longer than 0.5 m.

LED Display

The LEDs on the external CubicleBUS modules enable straightforward module diagnosis and testing. As explained in Tables 2-11 to 2-13, the internal status and the communications connection can be diagnosed to ensure that they have been wired correctly.

Communication-capable Circuit Breakers

WL Circuit Breaker

DEVICE LED

Meaning

 

 

Red

Internal error in the CubicleBUS module

 

 

Yellow

CubicleBUS module in test mode

 

 

Green

Module in operation

 

Table 2-11The DEVICE LED indicates the state of the external CubicleBUS module.

 

 

 

 

CubicleBUS LED

Meaning

 

 

Green

Connection exists to a different module

 

 

Off

No other CubicleBUS module detected

Table 2-12The CubicleBUS LEDs on the external CubicleBUS modules indicate whether communication is taking place with other modules. This enables straightforward diagnosis.

All other LEDs

Meaning

 

 

Yellow

On the input module, this indicates an ON

 

signal at the corresponding input. With

 

digital output modules, the output is

 

active when the contact closed. With

 

analog output modules, a yellow LED

 

indicates that the full-scale deflection

 

value has been exceeded by 20%.

 

 

Off

The LED is off if none of the above-

 

mentioned conditions are present

Table 2-13The LEDs indicate whether the outputs are set or the inputs are supplied with 24V DC and have been activated.

 

 

Figure

If a COM16 module is available, the external CubicleBUS modules can be integrated in the system by connecting them to the CubicleBUS

cables supplied. The end of the CubicleBUS must be installed with a terminating resistor. The power supply unit can simply be connected

2-11

via the X3 interface.

 

 

 

 

2/22

WL MODBUS Communication and Electronic Accessories • January 2005

Page 33
Image 33
Siemens UL 489, UL1066 specifications LED Display, CubicleBUS LED Meaning, All other LEDs Meaning

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.