Download - r6521e Kitz
KITZ 101, 102, 103Interface Units
Figure 1: KITZ Interface Unit
Features
Enables K-Bus to be interfacedwith IEC870 communications links
Provides for remote relaycommunications via modems
Optionally adds a real time tag torelay reply messages
Allows synchronisation of real timeclock via the communications link
Desk top or back of panelmounting
Provides visual indication ofcommunication operation on eachport
Suitable for electrically hostileenvironments
KITZ 103 enables Optimho (LFZP)distance relays to be interfacedonto K-Bus
Introduction
The KITZ interface units provideprotocol conversion between K-Bus,the communication medium forCourier compatible devices, andIEC870 frame format data. It providesa serial connection (RS232/IEC870)which enables a master station(typically a personal computer)running Courier software tocommunicate with slave devices.The KITZ can be used to implement anintegrated protection and controlsystem utilising the serialcommunications facility of relays.
Courier, the communication languagefor GEC ALSTHOM relays, providesaccess to relay menus allowing theuser to read, change and controlrelay functions. Courier is based on amaster-slave system whereby relays
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only respond when requested to do soby the master PC. All information isstored in the relays to form adistributed database which, combinedwith the generic nature of Courier,provides for ongoing relaydevelopments without the need forsoftware updates.
Devices are linked using K-Bus whichconsists of a screened twisted pair ofwires, an arrangement developed forcommunicating in electrically hostileenvironments. Up to 32 devices canbe connected in parallel on a singlespur up to a maximum length of 1 km.
Models Available
KITZ 101
Interface unit suitable for desk topmounting with ac auxiliary supply.
KITZ 102
Interface unit suitable for back ofpanel mounting with ac or dcauxiliary supply.
KITZ 103
Offers protocol conversion between K-Bus and Optimho (Opticom) enablingintegration of Optimho relays onto K-Bus. The KITZ 103 is suitable for backof panel mounting with ac or dcauxiliary supply.
Application
KITZ 101/102
The KITZ 101/102 interface unitfacilitates communications betweenK-Bus which links Courier compatibledevices and the serial port of a PC.Alternatively the KITZ 101/102 maybe connected via modems and atelephone network for remote accessto devices. The KITZ 101/102 mayalso be used for interfacing K-Bus withremote terminal units (RTUs) formingpart of Supervisory Control and DataAcquisition (SCADA) systems havingCourier language capability.
The KITZ 101/102 interface unitoffers protocol conversion betweenK-Bus and IEC870 formats, and willtypically be applied in substationswhere a number of K-Bus compatiblerelays are operating. This providesaccess to all of the functions ofconnected relays from a masterstation, such as a PC. Relay settingchanges, configuration, disturbanceand event records and remote circuitbreaker operations are functionsavailable using K-Bus.
It should be noted that protectiontripping and blocking signals are not
Figure 2: Typical application of KITZ 101 in
K Range relays
Remote Terminal Unit(RTU)
routed via the K-Bus and KITZinterface units. Separate conventionalwiring is used for these functions.Remote tripping and closing signals,where available as part of integratedcontrol systems, are transmitted viaK-Bus and KITZ.
Typical applications are shown inFigures 2 and 3.
The KITZ 101/102 interface unitprovides protocol conversion whichallows for relay communications withSCADA systems. Intelligent SCADAsystems capable of protocolconversion may communicate withrelays using Courier language via theKITZ 101/102 connected to anRS232 port of a substation RTU.Subject to the capabilities of theSCADA system, all relay functions canbe accessed via the KITZ 101/102.
KITZ 101/102 application with aSCADA system is shown in Figure 2below.
SCADA systems unable tocommunicate using Courier languagerequire an additional protocolconverter between the substation RTUand the KITZ 101/102 interface unit.
terface unit.
KBUS1
2
K-Busto terminals 1 & 2
screen to
K-Bus
KITZ 101
KITZ 103
The KITZ 103 enables the Optimho(LFZP) distance protection relay to beinterfaced onto K-Bus. The unitprovides a partial Courier interfaceenabling particular information fromthe Optimho relay to be accessed, ina similar manner to K-Series relays.Additionally, the unit providesprotocol conversion of Opticommessages, enabling remotecommunication with the relay overK-Bus using a modified version of theOpticom communication softwarepackage.
Typical application of the KITZ 103 isshown in Figure 4.
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RS232/IEC 870
Mains cable
KBUS1
Detail of earth link& external resistor when fitted
2
Figure 3: Typical application of KITZ 102 interface unit.
PC
K Range relays
RS232/IEC 870
K-Bus
KITZ 102
Modem
Telephone network
Auxiliary supply
KBUS
IEC870
OPTIONS
KBUS TO IEC 870 IN
TERFACE
KITZ101
RxTx
RxTx 01234567
1
0
Modem
Functions
KITZ 101/102
Protocol ConversionThe KITZ interface unit’s main functionis to convert between K-Bus messagedata and IEC870 format forcommunications with a PC.Modem Interface
For applications where a masterstation is located remotely from thedevices, communication between themaster station and KITZ 101/102may be established via the telephonenetwork and modems.The KITZ 101/102 may beconfigured to support modemcommunications
Real Time Clock (RTC)
The KITZ 101/102 provides optionaldate and time tagging to receivedK-Bus messages. When activated, theKITZ 101/102 appends an IEC870format date and time tag to receivedK-Bus messages containing anunsynchronised millisecond timercount. This allows accurate sequenceof events to be established despitepossible transmission delays on theIEC870 network. The real time clockis backed up by an internal battery.
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KITZ 103
The function of the KITZ 103 isdifferent to that of the KITZ 101/102.
The KITZ 103 provides a partialCourier interface for the Optimhorelay, enabling certain informationfrom the relay to be accessed in asimilar manner to that of the K-Seriesrelays. The information includes faultrecords, measurement values and theability to change the relay activesettings group. The KITZ 103 unitautomatically logs on to the Optimhorelay it is connected to on startup, andremains logged on in order to detectand extract new fault records and toextract measurement values. The unitcan be logged off by the user throughthe Courier interface, or by pressingthe RESET button on the relay frontpanel. The unit automaticallygenerates a Courier event, which canbe displayed on the PC, when a newfault record is extracted. The event iscreated using the time/date anddescription of the extracted fault.
The KITZ 103 also acts as a protocolconverter, automatically convertingmessages containing an Opticomidentifier. Note that the Opticomidentifier is automatically added tomessages transmitted from the PCusing Opticom 100 version 5.00 orOpticom 140 version 3.00 and later.This feature therefore provides accessto the relay over K-Bus via theOpticom communication software,including the ability to change relaysettings
Figure 4: Typical application of KITZ 103 interface unit
Auxiliary supply
RS232/IEC 870
PC
K Range relays (when fitted)
Auxiliary supply
KBUS1
2
KBUS1
2
KITZ 102
KITZ 103
Optimho (LFZP)
RS232
K-Bus
Hardware Description
The KITZ interface unit is housed in acase of dimensions 57.5mm x 163 mmx 216 mm deep, available as desktop model KITZ 101 or back of panelmounted as KITZ 102.
A 16 bit microprocessor controls thesoftware and communicationsfunctions of the KITZ.The communications functions areperformed by a SerialCommunications Controller (SCC).The KITZ contains two channels, aK-Bus channel and an RS232/IEC870channel, each able to receive andtransmit via their respectivecommunications port. An RS232 portand K-Bus terminals are located on therear panel.
User Interface
Front Panel User Interface
The front plate contains 5 LEDs toindicate ‘power on’, as well as‘transmit’ and ’receive’ status of boththe K-bus and the RS232/IEC870channels. Eight option switches forlocal configuration of the KITZ arealso located on the front plate.
Communications Protocol
Courier Access Software is providedwith the KITZ 101/102 to allowaccess to the relays to read andchange settings. Additional softwareentitled Protection Access Softwareand Toolkit (PAS&T) which providesaccess to disturbance and eventrecords, as well as some additionalrelay functions, is also available.Alternatively the CourierCommunications application guidedefines Courier communicationssufficiently to allow software to bewritten for specific applications,typically for communications usingexisting SCADA systems.
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Technical Data
Ratings
Auxiliary supplyNominal (V) Operative Range (V)
KITZ 101110V/230V ac 87 – 265V ac 50/60Hz
KITZ 102/10324/125V ac/dc 19 – 150V dc
50 – 133V ac 50/60Hz48/250V ac/dc 33 – 300V dc
87 – 265V ac 50/60Hz
Burdens
Auxiliary supply
KITZ 101 ac <5VA
KITZ 102/103 ac <5VA
dc <3W
Communication ports
K-Bus port
Language: Courier
Transmission mode: Synchronous
Signal level RS485
Transmission coding: FM0 (Bi Phase space)
Frame Format: HDLC
Data rate: 64k/bit per second
K-Bus cable: Screened twisted pair
K-Bus cable length: 1000m of cable (maximum)
K-Bus Loading: 32 units (multi-drop system)
Isolation: 2kV rms for one minute
Termination resistor 150Ω
RS232/ port frame format
Language: Courier
Transmission: Asynchronous – RS232 voltage levels
Transmission coding: NRZ
Frame format (switch 3 = position 0): Asynchronous – 11 bit(1 start bit, 8 data bits, 1 parity (even)1 stop bit)
Frame format (switch 3 = position 1): Asynchronous – 10 bit*(1 start bit, 8 data bits, no parity,1 stop bit)
*Note: The use of the 10 bit frame format will result in a less securecommunications protocol which does not meet IEC 870-5FT1.2requirements.
Data rate: 1200 to 57600* bits per second
RS232 cable: RS232 serial interface lead
RS232 cable length: 15m of cable (maximum)(or 2500pF total cable capacitance)
RS232 Loading: 2 units (point to point system)
*Note: Optimho data limited to 4800 bits per second.
High voltage withstand
Dielectric withstandIEC 255-5: 1977 2kV rms for 1 minute between the
auxiliary suppy terminals and theK-Bus terminals connected togetherand case earth.
2kV rms for 1 minute between theauxiliary supply terminals connectedtogether and the K-Bus terminalsconnected together.
High voltage impulseIEC 255-5: 1977 Three positive and three negative
impulses 5kV peak, 1.2/50µs, 0.5Jbetween all independent circuits andbetween all terminals and theprotective earth terminal.
Electrical environment
DC supply interruption (KITZ102 only)IEC 255-11: 1979 The unit will withstand a 10ms
interruption in the auxiliary supply,under normal operating conditions,without de-energising.
High frequency disturbanceIEC 255-22-1: 1988 Class III 2.5kV peak between independent
circuits and case.
1.0kV peak across terminals of thesame circuit.
Electrostatic dischargeIEC 255-22-2: 1989 Class III 8.0kV –discharge in air.
IEC 801-2: 1991 Level 2 (4.0kV) – point contactdischarge.
No additional tolerances are requiredfor the operating time or the unit’sthresholds.
Fast transient disturbanceIEC 255-22-4: 1992 Class III 2.0kV, 5kHz applied directly to
auxiliary supply and K-Buscommunications port.
IEC 801-4: 1988 Level 3 (2.0kV, 5kHz) applied directlyto all inputs.
EMC compliance89/336/EEC Compliance to the European
Commission Directive on EMC isclaimed via the TechnicalConstruction File route.
EN 50081-2: 1994 Generic Standards were used toEN 50082-2: 1995 establish conformity.
Product safety73/23/EEC Compliance with the European
Commission Low Voltage Directive.
EN 61010-1: 1993/A2: 1995 Compliance is demonstrated byEN 60950: 1992/A3: 1995 reference to generic safety standards.
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Atmospheric environment
TemperatureIEC 255-6: 1988 Storage and transit –25°C to +70°C
Operating –25°C to +55°C
IEC 68-2-1: 1990 Cold
IEC 68-2-2: 1974 Dry heat
HumidityIEC 68-2-3: 1969 56 days at 93% RH and +40°C
Enclosure protectionIEC 259: 1989 IP20
Mechanical environment
VibrationIEC 255-21-1: 1988 Response Class I
Endurance Class I
Shock and bumpIEC 255-21-2: 1988 Shock response Class I
Shock withstand Class I
Bump Class I
SeismicIEC 255-21-3: 1993 Class I
Case
KITZ 101 – Desk top mounting
KITZ 102 – Back of panel mounting
KITZ 103 – Back of panel mounting
Case dimensions are shown in figures 5 and 6.
Additional Information
KITZ 101, 102 Service Manual R8521
KITZ 103 Service Manual R8532
Optimho Service Manual R5911 – R5915
Courier Communications ApplicationGuide R6509 – R6513
Courier Communications forIntegrated Protection & Control Systems R4113
Figure 5: Case outline for KITZ 101.
Figure 6: Case outline for KITZ 102/103.
216.0
205.0
65.5 57.5
Rubber mounting feet
163.0
SWK-
Bus
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No
VxV-
57.5
216.0
205.0
179.0
181.0 174.0
4 off mounting lugs
163.0
4 (Typ)
SWK-
Bus
12
No
Vx
V
AU
XILI
ARY
SU
PPLY
VO
LTA
GE
Link not fitted on KITZ 103
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Unit type: K I T Z
K-Bus/IEC870 interface - desktopK-Bus/IEC870 interface - back of panelK-Bus/Optimho interface
Software:Standard
Case size:Standard
Mounting:Desktop (KITZ 101 only)Back of panel (KITZ 102, 103 only)
Auxiliary voltage:24/125V ac/dc (not available KITZ 101)48/250V ac/dc (ac only KITZ 101)
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XY
X
0 1
1 0 11 0 21 0 3
A E A
Order Details
Glossary
Courier A communication languagedeveloped to provide generic control,monitoring, data extraction andsetting changes on remote devices(primarily protective relays) within thesubstation environment.
K-Bus The 64 kbps twisted pair cable usedto connect relays and transfer Courierdata.
PAS&T An abbreviation for Protection AccessSoftware and Toolkit which is PCbased software used to access relayfunctions using Couriercommunications.
KITZ The interface unit which convertsbetween K-Bus and RS232/IEC870format data.
IEC870 An abbreviated term for thecommunication standard IEC870-5FT1.2 which is used to transferCourier data over modems andRS232 connections.
Optimho GEC ALSTHOM distance protectionrelay, also designated LFZP.
Opticom The software package used tocommunicate with Optimho relays.
RS232/IEC870 Port Refers generally to the serial port ofthe KITZ 101/102/103 interface unit,however, IEC870 frame format of theserial port data is only availableselectively on the KITZ 101/102 unit.
Relay/Device The terms “relay” and “device” referto K-Bus Courier communicatiingdevices such as protection relays,input/output devices, measurementcentres or similar.
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