Siemens UL 489, UL1066 specifications Digital Input Module, Functional description

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Communication-capable Circuit Breakers

WL Circuit Breaker

Digital Input Module

Functional description

The digital input module enables up to six additional binary signals (24V DC) to be connected. Signals, such as the status of the breaker, the status of the switchgear cabinet door, or a signal indicating that a predefined temperature has been exceeded, can be transmitted directly and processed at the field bus level.

A total of 6 inputs are available in the "BUS Input" Switch position. Six inputs are also available if the rotary switch is in the "Parameter Switch" position, although the first input causes the active parameter set to change. If the connected ETU does not have two parameter set capablity (e.g. ETU745 or ETU748), this input can also be used without any restrictions.

Functional description for changing parameter sets

Trip units ETU755 and ETU776 have two different parameter sets for the protection function. This function is particularly useful in the event of a power failure when an automatic transfer is made from utility to generator, a process which may require that all the protective functions change.

The MODBUS communication system, the BDA, the ETU776 display, or the digital input module can be used to switch between the two parameter sets.

For this purpose, the first module input is used in the "Parameter Switch" position on the rotary switch. If a "1" signal is detected (LED on input 1 is yellow), the switchover to parameter set B is communicated to the trip unit. If the input signal switches back to "0", the switchover to parameter set A is communicated, and the LED on input 1 is de-energized.

Since the CubicleBUS is event controlled, trip unit ETU755 or ETU776 switches over to the other parameter set when a switchover request is issued via the CubicleBUS.

This means that if a switchover is made to parameter set B via the BDA, for example, even though the input on the digital input module is set to "0" (parameter set A), the active parameter set in the trip unit switches to parameter set B. A switchover event to parameter set A is not initiated on the CubicleBUS until the input on the digital input module is set first to "1" and then back to "0".

A maximum of two digital input modules can be operated simultaneously on one WL Circuit Breaker: one as a module with the "BUS Input" position and the other as "Parameter Switch" mode.

Figure

The position of the rotary

switch determines the

2-13

operating mode.

 

Technical data for the digital input module

Operating voltage min. / max.

19.2V / 28.8V

 

 

Operating current min. / max.

29mA / 43mA

 

 

No. of channels per digital input module

6

 

 

Min. voltage value for detecting a "1" signal

>16V

 

 

Current per input for a "1" signal

7.5mA

 

 

Max. voltage value for detecting a "0" signal

<1V

 

 

Current input per input for a "0" signal

0mA

 

 

Max. no. of digital input modules per breaker

2

 

 

Power min. / max.

0.72W / 0.94W

 

 

Dimensions W / H / D

70 mm / 86mm / 95 mm

 

 

Weight

0.223 kg

 

 

Operating temperature range

-20°C / 60°C

 

 

Table 2-15This table provides accurate technical data for the digital input module on the CubicleBUS.

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WL MODBUS Communication and Electronic Accessories • January 2005

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Contents Global network of innovation Powerful ideasCommunication-capable Circuit Breakers Communication-capable Circuit Breaker Registered Trademarks Safety GuidelinesQualified Personnel Correct UsageIntroduction Overview Introduction Content of the ManualGeneral Easy Planning System SolutionsWL Circuit Breakers-Modular Intelligent Cost SavingModbus Communication Bus SystemsCommunication Structure of the WL Circuit Breakers Ethernet WL Circuit Breaker Brief Description of the WL Circuit Breaker Introduction and OverviewCommunications Capability of the Electronic Trip Units ETUs CubicleBUSETU725 ETU727 ETU745 Functional overview of the trip unit systemBasic Functions ETU725 ETU727 ETU745 Setting range of the IgBasic Functions ETU748 ETU755 ETU776 Communication Data points with the same source 755 or Data Availability on the CubicleBUSData point group ETU745 MeteringModbus Module COM16 Pin ConfigurationModbus COM16 Module and the BSS Modbus Installation Guideline Modbus Write Protection DPWriteEnableCubicleBUS + Data Exchange via the COM16 ModuleMeaning Position and text on the cable CubicleBUS Position Rear Microswitch S46 Middle S47 Front S48Meaning Cubicle BUS LED MeaningBreaker Status Sensor BSS General Metering Function PlusWaveform buffer Metering Function PlusHarmonic analysis Maximum distance from voltage transformer Parameters for the settings of the metering functionVoltage Transformers VT AccuracyMetering range 81THDC Extended Protective Function Important functions/parameters for communicationsLoad Management Event and Trip Log Normal Positive Power Flow DirectionSetpoints Minimum for Communicated CurrentsExternal CubicleBUS Modules Rotary SwitchesInstallation CubicleBUS Installation Guidelines Power Supply Maximum CubicleBUS Configuration All other LEDs Meaning LED DisplayMeaning CubicleBUS LED MeaningDevice Testing the Digital Input and Output ModulesFunctional description for changing parameter sets Technical data for the digital input moduleDigital Input Module Functional descriptionDelay time Digital Output Module with Rotary SwitchSelector switch position to the left Selector switch position to the rightConfigurable Digital Output Module Trigger event Waveform buffer B Technical data for the digital configurable output moduleAnalog Output Module Power value ranges W/VATest function Switch position cosTechnical data for the analog output module Example as illustrated in Graphic ZSI ModuleOperating principle It trips after tZSI = 50 ms. Time saved = 250 ms Technical data for the ZSI moduleCommunication-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 COM16 slave Send Event What the Event Bytes ContainFunction 15 Write Multiple Coils Function 16 Write Multiple Registers Exception Responses Code Name Meaning Exception CodesBasic 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 Data bytes Complete List of DatasetsMin Max Bits Sample DatasetByte Register Description Bit Mapping for Breaker Status RegisterWL 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 as a Hand-Held Device or BDA Plus BDA in Offline Mode or BDA PlusIntranet and Internet BDA Plus as an Ethernet InterfaceGetting started with the BDA Plus What is Java?Circuit breaker requirements Permanent Connection to WL Circuit BreakersTemporary Meaning of the LEDs on the BDA Operation4This table provides technical data for the BDA and BDA Plus Technical data for the BDA and BDA PlusUsually have to be changed. They are shown as a reference Connection to the BDA via the Serial Communication SystemBreaker 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 Definition of Key Terms Connection to the BDA Plus via the Ethernet InterfaceBDA IP Address IP AddressesSubnet Mask ExampleDisplaying Data Operating Instructions and TroubleshootingOffline/Online Mode Languages and HelpPrinting Password ProtectionSentron Operation ExampleTroubleshooting List Fault Description Solution Siemens Energy & Automation, Inc. All Rights Reserved Siemens Energy & Automation, Inc
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