Siemens UL1066, UL 489 Modbus Write Protection DPWriteEnable, Modbus Installation Guideline

Models: UL 489 UL1066

1 92
Download 92 pages 35.36 Kb
Page 20
Image 20

Communication-capable Circuit Breakers

WL Circuit Breaker

MODBUS Write Protection (DPWriteEnable)

Write access via communications can be blocked either temporarily or permanently.

The COM16 module features a hardware input for this purpose. Pin 1 provides the 24V DC supply, which can be connected to pin 2.

If this input is not bridged, write access and control is disabled.

The following actions are blocked if the input of the write-protect function has not been enabled:

Breaker open/close

Reset the last trip

Change the protective parameters

Change the parameters for the extended protection function (metering function)

Change the communication parameters

Settings of the metering options

Reset maintenance information (counters)

Force the digital outputs from WinPM.Net

The following control functions are available even if the write protection function has not been enabled:

Change and set the trigger functions for the waveform buffer

Read the content of the waveform buffer

Change the setpoint parameters

Set/change the system time

Change the free texts (comments, system IDs)

Reset the min./max. values

Change the unassigned user output

MODBUS Installation Guideline

The COM16 must be assembled and connected as described in the WL Operating Instructions. Of particular importance is the requirement to ground the shield of the MODBUS cable.

 

 

Graphic

This diagram illustrates how to wire the COM16 module if MODBUS is to

be used to switch the device open and closed. This diagram only applies

2-3

to 24V DC control voltage.

 

 

 

Graphic

Interposing relays are required if a control voltage different than 24V DC

is used. If the 1st shunt trip is not used to switch off the device, use

2-4

terminals X9.1 and X9.2 to utilize the 2nd shunt trip.

 

 

 

2/9

WL MODBUS Communication and Electronic Accessories • January 2005

Page 20
Image 20
Siemens UL1066, UL 489 specifications Modbus Write Protection DPWriteEnable, Modbus Installation Guideline

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.