Siemens UL1066, UL 489 specifications General information

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Communication-capable Circuit Breakers

WL Circuit Breaker

External power consumption of a WL Circuit Breaker with CubicleBUS

WL Circuit Breakers with CubicleBUS are designed to provide internal and external communication when the main contacts are open. It is therefore necessary to connect an external power supply.

General information

The current sensing devices of WL Circuit Breakers consist of two components. The Rogowski coils deliver the current measuring values, and the energy converters provide the trip units with power. For breakers without an additional external supply, the trip units are

already activated and monitor the current at minimum values of 80A for Frame Size II, and 150A for Frame Size III.

The current from the sensors are sufficient to not only activate the protective functions of the ETU745 or ETU748 trip units, but also to activate the display, however, the back-lighting requires an external power supply. If the CubicleBUS has been connected to a UL Listed 24V DC class 2 power supply, the display is fed with energy from this supply.

The display of the ETU776 only functions when an external CubicleBUS power supply has been connected. The protective functions are fully operational when primary current is flowing even though the display is not active.

If additional CubicleBUS components are applied on a WL Circuit Breaker, the breaker must be connected to an external UL Listed 24V DC class 2 power supply.

The CubicleBUS consists of four wires, two for the communications and two for the UL Listed 24V DC class 2 power supply. The CubicleBUS is connected to the external terminal X8.1 to X8.4.

Table 2-23To find a suitable external power supply for the WL Circuit Breaker with CubicleBUS the continuous current and the peak inrush current must be observed.

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WL MODBUS Communication and Electronic Accessories • January 2005

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Contents Powerful ideas Global network of innovationCommunication-capable Circuit Breakers Communication-capable Circuit Breaker Safety Guidelines Qualified PersonnelCorrect Usage Registered TrademarksIntroduction Overview Introduction Content of the ManualGeneral System Solutions WL Circuit Breakers-Modular IntelligentCost Saving Easy PlanningCommunication Bus Systems ModbusCommunication Structure of the WL Circuit Breakers Ethernet WL Circuit Breaker Introduction and Overview Brief Description of the WL Circuit BreakerCubicleBUS Communications Capability of the Electronic Trip Units ETUsFunctional overview of the trip unit system ETU725 ETU727 ETU745Setting range of the Ig Basic Functions ETU725 ETU727 ETU745Basic Functions ETU748 ETU755 ETU776 Communication Data Availability on the CubicleBUS Data point group ETU745Metering Data points with the same source 755 orModbus Module COM16 Pin ConfigurationModbus COM16 Module and the BSS Modbus Write Protection DPWriteEnable Modbus Installation GuidelineCubicleBUS + Data Exchange via the COM16 ModuleMeaning Position and text on the cable CubicleBUS Rear Microswitch S46 Middle S47 Front S48 MeaningCubicle BUS LED Meaning PositionBreaker Status Sensor BSS Metering Function Plus GeneralWaveform buffer Metering Function PlusHarmonic analysis Parameters for the settings of the metering function Voltage TransformersVT Accuracy Maximum distance from voltage transformerMetering range 81THDC Extended Protective Function Important functions/parameters for communicationsLoad Management Normal Positive Power Flow Direction SetpointsMinimum for Communicated Currents Event and Trip LogExternal CubicleBUS Modules Rotary SwitchesInstallation CubicleBUS Installation Guidelines Power SupplyMaximum CubicleBUS Configuration LED Display MeaningCubicleBUS LED Meaning All other LEDs MeaningTesting the Digital Input and Output Modules DeviceTechnical data for the digital input module Digital Input ModuleFunctional description Functional description for changing parameter setsDigital Output Module with Rotary Switch Selector switch position to the leftSelector switch position to the right Delay timeConfigurable Digital Output Module Technical data for the digital configurable output module Trigger event Waveform buffer BPower value ranges W/VA Analog Output ModuleTest function Switch position cosTechnical data for the analog output module Example as illustrated in Graphic ZSI Module Operating principle Technical data for the ZSI module It trips after tZSI = 50 ms. Time saved = 250 msCommunication-capable Circuit Breakers General information Output current Inrush current Type Order No Communication-capable Circuit Breakers Modbus Profile for WL Circuit Breaker Supervisory Systems Function 02 Read Discrete Inputs COM16 Supported Function CodesFunction 01 Read Coils Reply Message from slave Function 03 Read Holding RegistersRequest Message to slave Function 07 Read Exception Status Function 04 Read Input RegistersFunction 05 Write Single Coil Function 12 Get Communication Event Log Function 08 DiagnosticsFunction 11 Get Communication Event Counter What the Event Bytes Contain COM16 slave Send EventFunction 15 Write Multiple Coils Function 16 Write Multiple Registers Exception Responses Exception Codes Code Name MeaningBasic Data Type 2 Registers and Default Data Points Default Register ListsBasic Data Type 1 Registers and Default Data Points Basic Data Type 3 Registers and Default Data Points Complete List of Datasets Data bytesSample Dataset Min Max BitsBit Mapping for Breaker Status Register Byte Register DescriptionWL Configurator Brief Description Communication-capable Circuit Breakers Breaker Data Adapter BDA Breaker Data Adapter Plus BDA Plus Benefits of the BDA Brief Description and System RequirementsDescription BDA in Offline Mode or BDA Plus BDA as a Hand-Held Device or BDA PlusBDA Plus as an Ethernet Interface Intranet and InternetGetting started with the BDA Plus What is Java?Circuit breaker requirements Permanent Connection to WL Circuit BreakersTemporary Operation Meaning of the LEDs on the BDATechnical data for the BDA and BDA Plus 4This table provides technical data for the BDA and BDA PlusConnection to the BDA via the Serial Communication System Usually have to be changed. They are shown as a referenceBreaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Breaker Data Adapter BDA Connection to the BDA Plus via the Ethernet Interface Definition of Key TermsIP Addresses Subnet MaskExample BDA IP AddressOperating Instructions and Troubleshooting Offline/Online ModeLanguages and Help Displaying DataPassword Protection SentronOperation Example PrintingTroubleshooting List Fault Description Solution Siemens Energy & Automation, Inc Siemens Energy & Automation, Inc. All Rights Reserved