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WL Low V oltage Pow er Cir cuit Br eak er ANSI / UL1066 & UL 489 po w er ful ideas Global network of inno vation RELIABLE SOLUTIONS WL T rip Unit, MODBUS Communication and Electronic Acces sories Application Guide Siemens Energy & Automation, Inc.
Communication-capable Circuit Break ers T ec hnological Leader Among Circuit Breakers: WL Communication WL Circuit Br eaker Connection Diagram 1 Break er Data Adapter (BDA) 2 Browser -capable input and output device (e.
WL MODBUS Communication and Electronic Accessories • January 2005 Communication-capable Circuit Break er 1 2 3 4 Introduction and Overview WL Circuit Breaker MODBUS Profile for WL Circuit Break er B.
WL Circuit Br eaker Communication-capable Circuit Break ers Safety Guidelines This manual contains notices which you should observe to ensur e your own personal saf ety , as well as to pro tect the product and connect ed equipment.
WL MODBUS Communication and Electronic Accessories • January 2005 Introduction and Ov er vie w 1 Content of the Manual Overview of the Bus Systems Communicating with the Circuit Breaker WL UL 489_Co.
This manual is aimed at those who want to find out more about the different applications of communications-capable circuit breakers in po wer distribution systems. It contains a detailed guide to commissioning, operating, diagnosing and maintaining the new communications-capable WL Circuit Breaker .
Introduction and Overview In this way , st atus information, alarms, trip information and setpoints (e.g. o vercurr ent, phase unbalance, overvoltage) increase transparency in pow er distribution systems, enabling these situations to be dealt with quic kly .
Communication bus systems are used to connect distribution devices with varying levels of intelligence. With their different structures and mechanisms, cert ain bus systems are designed f or highly specific applications, while others are better suit ed for more open applications.
Introduction and Overview 1/4 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Communication Structure of the WL Circuit Breakers The follo wing diagram: • Provides an o verview of the different communication options available with WL Cir cuit Break ers and their modules.
WL Circuit Br eaker Introduction and Overview 1/5 WL MODBUS Communication and Electronic Accessories • January 2005 Ethernet The Industrial Ethernet is a high- performance network that conf orms to IEE 802.
WL MODBUS Communication and Electronic Accessories • January 2005 Short description of WL Circuit Breaker The Cubicle BUS Communication Function of the T rip Units The COM16 MODBUS Module Metering a.
The demands regar ding communications capability , data transparency , flexibility and integration in po wer distribution systems ar e increasing all the time. The WL Circuit Br eaker is a modular circuit break er that fulfills the requir ements of the future t oday .
Communication-capable Circuit Break ers The ability to change be tween two different parame ter sets is also possible. This function is particularly useful in the event of a po wer failure when an aut omatic transfer is made from utility t o generator power , a process which can involv e changing many of the trip unit paramet ers.
WL Circuit Br eaker Communication-capable Circuit Break ers F unctional ov er view of the trip unit sy stem 2/3 WL MODBUS Communication and Electronic Accessories • January 2005 Basic Functions ETU725 ETU727 ETU745 Long-time overcurrent pro tection ✔✔ ✔ Function can be switched ON/OFF – – – Setting range I R = I n x … 0.
Communication-capable Circuit Break ers 2/4 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Basic Functions ETU725 ETU727 ETU745 Parameter sets Selectable betwe.
WL Circuit Br eaker Communication-capable Circuit Break ers 2/5 WL MODBUS Communication and Electronic Accessories • January 2005 F unctional ov er view of the trip unit sy stem Basic Functions ETU748 ETU755 ETU776 Long-time overcurrent pro tection ✔✔ ✔ Function can be switched ON/OFF – – – Setting range I R = I n x … 0.
Communication-capable Circuit Break ers 2/6 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Basic Functions ETU748 ETU755 ETU776 Parameter sets Selectable betwe.
Data Availability on the Cubicle BUS All modules connected t o the Cubicle BUS can request data from o ther modules via the bus and generate data themselves that can be read b y other modules. Each data point in the comprehensiv e WL Circuit Break er data dictionar y can only be generated by a sing le module—the data source.
Communication-capable Circuit Break ers The MODBUS C OM16 Module and the BSS The C OM16 module enables the WL Circuit Br eaker t o exchange data via MODBUS to super visor y systems and MODBUS mast ers.
WL Circuit Br eaker Communication-capable Circuit Break ers 2/9 WL MODBUS Communication and Electronic Accessories • January 2005 MODBUS Writ e Protection (DPW riteEnable) Writ e access via communications can be blocked either temporarily or permanently .
Communication-capable Circuit Break ers The write-pr otect function ensur es that all the requir ed information can be transmitt ed, but prev ents any changes to the status of the circuit break er .
Three micr oswitches located in the C OM16 module can determine the position of a drawout cir cuit breaker in the guide frame, which is then communicated via the C OM16 module.
Communication-capable Circuit Break ers Breaker S t atus Sensor (BSS) BSS stands f or "break er status sensor ." All microswitches that contain information on the state of the circuit br eaker ar e either installed directly to the BS S or connected t o it.
The integrat ed metering function can be used with all trip units with a Cubicle BUS connection. It not only ext ends the range of pro tection functions of the trip unit but also pro vides additional warnings and diagnostic options.
Communication-capable Circuit Break ers Metering F unction Plus The Met ering Function Plus module extends the range of me tering functions to include harmonic and wav eform analysis. Harmonic analysis The Met ering Function Plus module senses the current and voltage, sa ves the measured values, and carries out a fast Fourier transf ormation.
Communication-capable Circuit Break ers 2/15 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker The trigger event can be se t individually for each wa veform buffer . The point at which the trigger event is t o t ake place in the wav eform buffer can also be defined.
Communication-capable Circuit Break ers 2/16 WL MODBUS Communication and Electronic Accessories • January 2005 T able 2-7 The metering function provides a minimum and maximum measur ed value for each measur ed value specified above.
Communication-capable Circuit Break ers 2/17 WL MODBUS Communication and Electronic Accessories • January 2005 T able 2-9 Alarm and setpoint functions allow e vents to be generated when system conditions de viate from their nominal values. The generat ion of the events can be delay ed to prev ent transient conditions from “chattering”.
2/18 WL MODBUS Communication and Electronic Accessories • January 2005 Communication-capable Circuit Break ers WL Circuit Br eaker Import ant functions/parameters f or communications Thanks to their modular construction and numerous I/O modules, WL Circuit Br eakers offer flexible system solutions.
Communication-capable Circuit Break ers 2/19 WL MODBUS Communication and Electronic Accessories • January 2005 Setpoints In addition to the load management option (load shedding/load rest ore), the met ering modules offer an option f or an automatic monitoring of operating data and the generation of an alarm.
Communication-capable Circuit Break ers External Cubicle BUS Modules By connecting additional, external modules t o the Cubicle BUS , break er st atus information can be displa yed and data read from the switchgear to the syst em. This enables cost-effective solutions to be implement ed for aut omating other devices in the switchgear .
Pow er Supply The Cubicle BUS must be supplied with a UL Listed 24V DC clas s 2 power supply acros s its entire length. Refer ence pages 2/33 and 2/34 of this manual for de tails per taining to the requir ements of this power supply . T erminals X8.3 and X8.
Communication-capable Circuit Break ers • The ZSI module must be the first external module t o be connected, if used. • If the BD A is connected to the front int er face of the trip unit, the cable must be no longer than 0.5 m. LED Display The LEDs on the external Cubicle BUS modules enable straightforward module diagnosis and testing.
T esting the Digital Input and Output Modules The test should be performed prior to an y commissioning work t o det ermine whether the circuit break er and its components function properly . The test mode can be used t o check that the Cubicle BUS modules function properly .
Communication-capable Circuit Break ers Digital Input Module Functional descrip tion The digital input module enables up to six additional binary signals (24V DC) to be connect ed.
Digital Output Module with Rotar y Switch The digital output module can be used to output six e vents. These events can be warnings or trips and can be used for ext ernal annunciation or control. A cir cuit break er trip can be wired t o an Alarm Horn or Stack Light.
Communication-capable Circuit Break ers Configurable Digital Output Module The configurable digital output module also has six outputs. Like the digital output module with the ro tar y switch, it is available with opt ocoupler and relay outputs.
The status can be read via the input module, which means that a mot or could be switched ON or OFF via the configurable digital output module. Many o ther applications are also possible. Unlike the digital output module with the ro tar y switch, a time delay canno t be added to the ev ent.
Communication-capable Circuit Break ers Analog Output Module The analog output module can be used to output the most important measured values sent via the Cubicle BUS to analog indicat ors (e.g. analog met ers) in the switchgear cubicle door . Each analog output module has four channels f or this purpose.
A01: Network fr equency A02: Av erage value of the phase-to- phase voltages A03: T otal active po wer A04: Av erage value of the power factors The scale for displa ying the frequency must range from 45Hz t o 65Hz. This enables the standard freq uencies in countries where IEC and UL standards apply to be displa yed.
Communication-capable Circuit Break ers ZSI Module T o use the ZSI function with the WL Circuit Br eaker , the external Cubicle BUS ZSI module must be implemented.
Short-circuit at 1: Only -Q1 establishes that a shor t- circuit has occurr ed and does not receive a bloc king signal from a subordinate le vel. For this reason, it trips after t ZSI = 50 ms. Time saved = 250 ms. The ZSI function can be used for short-circuits between the phases (S), with respect t o ground (G), or f or both simultaneously (S+G).
Communication-capable Circuit Break ers 2/32 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Graphic 2-7 This diagram consists of two parts: the top half is a connection diagram. The bottom half sho ws the circuitry when a tie breake r is used.
WL MODBUS Communication and Electronic Accessories • January 2005 Communication-capable Circuit Break ers 2/33 WL Circuit Br eaker External po wer consump tion of a WL Circuit Break er with Cubicle BUS WL Circuit Br eakers with Cubicle BUS are designed t o pro vide internal and ext ernal communication when the main contacts are open.
A power supply must be select ed in accordance with these two characteristic values. Se veral WL Circuit Br eakers can be connect ed to one pow er supply .
WL MODBUS Communication and Electronic Accessories • January 2005 Communication-capable Circuit Break ers 2/35 WL Circuit Br eaker Not es WL UL 489_Com-section 2 1/28/05 1:09 PM Page 36.
WL MODBUS Communication and Electronic Accessories • January 2005 MODBUS Communication with the WL Circuit Breaker Integration int o Super visor y Systems Supported Function Codes Excep tion Respons.
The WL Circuit Br eaker supports the industr y standard MODBUS pro tocol through the C OM16 interface. Communication connections to the C OM16 are made through the DB-9 port on the front of the COM16; see Graphic 3-2 for connecting cable pin assignments.
Communication-capable Circuit Break ers Function 01: Read Coils Function This function reads the state of multiple Control Bits and Extra Flags in a C OM16 slave. Bit Start Address Any value fr om 0000 hex to 000F hex. If an y other addr ess is specified, an Excep tion Code of 02 (Invalid Data Address) will be r eturned.
Communication-capable Circuit Break ers 3/3 WL MODBUS Communication and Electronic Accessories • January 2005 Function 03: Read Holding Regist ers Function This function reads a se t of registers from a C OM16 slave. Start Address Any value within the addres s range defined for eac h of the data sets.
Communication-capable Circuit Break ers 3/4 WL MODBUS Communication and Electronic Accessories • January 2005 Function 04: Read In put Registers Function This function reads the Basic Data Registers fr om a COM16 sla ve. All three Basic T ypes (1, 2 and 3) are supported.
Communication-capable Circuit Break ers 3/5 WL MODBUS Communication and Electronic Accessories • January 2005 Function 08: Diagnostics Function This function provides a method f or checking the communication between the master and a C OM16 slave.
Communication-capable Circuit Break ers 3/6 WL MODBUS Communication and Electronic Accessories • January 2005 What the Event Bytes Contain For a C OM16 slave, an ev ent byte r eturned by the F etch Communications Event Log function can be either of two types.
Communication-capable Circuit Break ers 3/7 WL MODBUS Communication and Electronic Accessories • January 2005 Function 15: W rite Multiple Coils Function This function sets the state of multiple control bits and extra flags in a C OM16 slave. Bit Start Address Any value fr om 0000 hex to 000F hex.
Communication-capable Circuit Break ers 3/8 WL MODBUS Communication and Electronic Accessories • January 2005 Function 16: W rite Multiple Registers Function This function writes a com plete Datase t to a C OM16 slav e. Start Address Any value within the addres s range defined for each of the data se ts.
Ex ception Responses Excep t for br oadcast messages, when a master de vice sends a query to a slave de vice, it expects a normal response. One of f our possible ev ents can occur from the master's query: 1.
Communication-capable Circuit Break ers 3/10 WL MODBUS Communication and Electronic Accessories • January 2005 Excep tion Codes Code Name Meaning 01 hex Illegal Function The function code received in the query is not an allowable action f or the COM16 sla ve.
Default Register Lists (Function 04 Data Blocks) Basic Data T ype 1 Registers and Default Data Points Register Byte Name Default Data Point – WL 1 0, 1 Status Register WL status bits 2 2, 3 Dat a Bl.
Communication-capable Circuit Break ers 3/12 WL MODBUS Communication and Electronic Accessories • January 2005 Basic Data T ype 3 Registers and Default Data Points Register Byte Name Default Data Po.
Datasets: addresses, number of registers and read/write access of eac h. Starting Padding Read/ register Number Number of byte write Dataset Descrip tion address of registers data bytes required acces.
Communication-capable Circuit Break ers 3/14 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Dataset 94 – Current Metering V alues Starting Address: 5E00 hex,.
Communication-capable Circuit Break ers 3/15 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Dataset 94 – Current Metering V alues Starting Address: 5E00 hex,.
Communication-capable Circuit Break ers 3/16 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker WL Configurator Brief Description WL Configuration software, WL Config © , is a software configuration tool used t o set pro tective settings, se t points and additional pro tective functions in the WL trip unit.
WL MODBUS Communication and Electronic Accessories • January 2005 Communication-capable Circuit Break ers 3/17 WL Circuit Br eaker Not es WL UL 489_Com-section 3 1/28/05 1:10 PM Page 18.
WL MODBUS Communication and Electronic Accessories • January 2005 Short Description of the BDA/BD A Plus System Requirements Connect the BDA/BD A Plus to the WL Circuit Breaker Communication via the.
The Break er Dat a Adapt er (BDA) is the first circuit br eaker paramet erization device t o featur e an integrat ed webser ver for parame terization, monitoring and diagnostics. The BDA Plus also featur es an Ethernet interface for connection to the Ethernet, Intrane t or Interne t.
Break er Data Adapter (BD A) BDA in Offline Mode (or BD A Plus ) In offline mode, the BDA or BDA Plus is only connected t o a laptop (repr esents all input/output devices). All the req uired paramet ers can be set in this operating mode and sav ed for lat er use (download to the cir cuit- break ers).
BDA Plus as an Ethernet Interface In addition to the pr eviously mentioned functions, the BDA Plus enables data to be accessed via the Ethernet. In this case, the cir cuit break er dat a is not transmitt ed as net data, but displayed on HTML pages in an application-specific format.
System Requirements Cert ain prer equisites ha ve to be fulfilled befor e the BDA or BD A Plus can be operated. One of the two standard bro wsers (Interne t Explorer V5.5 or higher or Ne tscape Navigat or V6.2 or higher) must be installed on the output device (e.
T o operate the BDA, it must be connected t o the target syst em (e.g. a PC) on one side and a circuit br eaker on the o ther . Different scenarios ar e possible depending on the application. For WL Circuit Br eakers, two basic methods ar e available f or connecting the BDA, tem porar y of permanent installation.
T able 4-1 The LEDs on the BDA indicate the current operating status. Operation As a microcomput er , the BDA is boot ed in the same way as a PC. This takes appr oximat ely 40 seconds and is star ted aut omatically when the power supply is switched on.
When the boot-up pr ocess is complet e, the DEVICE LED switches to green, while the Cubicle BUS LED switches to g reen or is extinguished, depending on the connection. If the BDA is no t supplied power via the Cubicle BUS of the WL, it must be activated via an ext ernal 24V DC power supply .
Connection to the BD A via the Serial Communication System T o operate the BDA, it must be connected t o the target syst em (e.g. a PC) on one side and a circuit br eaker on the o ther . A range of options ar e available, depending on the application and operating system.
Break er Data Adapter (BD A) 4/9 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-5 Installing a standard modem with Windows98, part 1 (identical to Windows95, Windo wsNT and WindowsME): A standard modem (28800 bps) is selected and installed in t he Control Panel.
4/10 WL MODBUS Communication and Electronic Accessories • January 2005 Break er Data Adapter (BD A) WL Circuit Br eaker Figure 4-6 Installing a standard modem with Windows98, part 2 (identical to Wi.
Break er Data Adapter (BD A) 4/11 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-7 Installing a data communications connection to the BDA with W indow s98, part 1 (identical to Windows95 and WindowsME): Y ou now have to establish a data communications connection to the BDA.
4/12 WL MODBUS Communication and Electronic Accessories • January 2005 Break er Data Adapter (BD A) WL Circuit Br eaker Figure 4-8 Installing a data comm. connection to the BDA with W indo ws98, part 2 (identical to Windows95 and WindowsME): Once communication has been established, the connection window disappears from the W indow s systray .
Break er Data Adapter (BD A) 4/13 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-10 Installing a standard modem with Windo ws2000, part 2 (identical to WindowsXP): Select the standard modem (28800) and assign it to a free C OM inter face.
4/14 WL MODBUS Communication and Electronic Accessories • January 2005 Break er Data Adapter (BD A) WL Circuit Br eaker Figure 4-11 Installing a standard modem with Windo ws2000, part 3 (identical to WindowsXP): After installation, you have to set the maximum r a te to 115200.
Break er Data Adapter (BD A) 4/15 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-12 Setting up a data communications connection to the BD A with WindowsXP , par t 1: Go from the Control Panel t o "Network En vironments" and click "Establish New Connection", as sho wn above.
4/16 WL MODBUS Communication and Electronic Accessories • January 2005 Break er Data Adapter (BD A) WL Circuit Br eaker Figure 4-13 Setting up a data communications connection to the BD A with WindowsXP , par t 2: Continue following the instructions and maintain the window s as shown above.
Break er Data Adapter (BD A) 4/17 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-14 Setting up a data communications connection to the BD A with Windo.
4/18 WL MODBUS Communication and Electronic Accessories • January 2005 Break er Data Adapter (BD A) WL Circuit Br eaker Figure 4-15 Setting up a data communications connection to the BDA with Window sXP , par t 4: Once the connection has been established, start the browser and enter the address 2.
Break er Data Adapter (BD A) 4/19 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-16 Setting a data communications connection to the BD A with Windows2000, part 1 (similar to WindowsNT): A modem is installed for Windows2000 in the same w ay as for WindowsXP .
4/20 WL MODBUS Communication and Electronic Accessories • January 2005 Break er Data Adapter (BD A) WL Circuit Br eaker Figure 4-17 Setting up a data communications connection to the BD A with Windo.
Break er Data Adapter (BD A) 4/21 WL MODBUS Communication and Electronic Accessories • January 2005 WL Circuit Br eaker Figure 4-18 Setting up a data communications connection to the BD A with Windo.
4/22 WL MODBUS Communication and Electronic Accessories • January 2005 Connection to the BD A Plus via the Ethernet Interface In addition to communication via the serial RS232 channel, the BDA Plus f eatures an Ethernet interface. If the BDA Plus is t o be addres sed via this interface, it must be integrat ed in the local Ethernet (L AN).
Break er Data Adapter (BD A) 1/2 WL MODBUS Communication and Electronic Accessories • January 2005 IP Addresses The partner must have a unique addres s so that it can be addressed in the extensiv e Intranet/Interne t system.
Operating Instructions and T roubleshooting The BDA supports state-of-the- art communications technology . It can be implemented regar dless of the operating system and br owser used. The instructions pro vided here, show y ou how to make particular settings.
Password Pro tection All write actions that would r esult in a change to the status or a parame ter in the circuit br eaker ar e passwor d pro tected. This ensur es that paramet ers cannot be changed and switching is impos sible without this passwor d.
Communication-capable Circuit Break ers T echnological Leader Among Circuit Breakers: WL Communication WL Circuit Br eaker Connection Diagram 1 Break er Data Adapter (BDA) 2 Browser -capable input and output device (e.
WL Low V oltage Pow er Cir cuit Break er ANSI / UL1066 & UL 489 po w er ful ideas Global network of inno vation RELIABLE SOLUTIONS WL T rip Unit, MODBUS Communication and Electronic Acces sories Application Guide Siemens Energy & Automation, Inc.
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