PRON NA60-CBA. IEC Communication Protocol User Guide PRON NA60-CBA. Version Page: 1 of 13 PRON NA60-CBA IEC

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1 IEC Communication Protocol User Guide PRON NA60-CBA Page: 1 of 13 PRON NA60-CBA IEC

2 Contents Contents IEC Protocol Physical Layer Electrical Interface Optical Interface Transmission speed Link Layer Application Layer Transmission mode for application data Common address of ASDU Selection of standard information numbers in monitor direction Selection of standard information numbers in control direction Basic application functions Miscellaneous IEC INTERFACE Physical connection and link layer Initialisation Time synchronisation Spontaneous events General interrogation Cyclic measurements Commands Disturbance records Blocking of monitor direction Acronyms List of events produced by the relay List of data contained in General Interrogation Cyclic measurements List of the supported commands...13 Page: 2 of 13 PRON NA60-CBA IEC

3 Introduction This Protocol Manual is for use with Thytronic Protective Relays, such as the DMC, NTG and PRO-N series that support the IEC communication protocol. 1 IEC Protocol The pages in this section have been extracted from the IEC:1997, pages 159 to 171. The section numbers below have been purposely retained from that document for reference. 8 INTEROPERABILITY 8.1 Physical Layer Electrical Interface EIA RS-485 Number of loads 32. For one protection equipment NOTE - EIA RS-485 standard defines unit loads so that 32 of them can be operated on one line. For detailed information refer to clause 3 of EIA RS-485 standard Optical Interface Glass fibre Plastic fibre F-SMA type connector BFOC/2,5 type connector Transmission speed bit/s bit/s bit/s bit/s bit/s bit/s bit/s 8.2 Link Layer There are no choices for the link layer. Page: 3 of 13 PRON NA60-CBA IEC

4 8.3 Application Layer Transmission mode for application data Mode 1 (least significant octet first), as defined in 4.10 of IEC , is used exclusively in this companion standard Common address of ASDU One COMMON ADDRESS of ASDU (identical with station address) More than one COMMON ADDRESS of ASDU Selection of standard information numbers in monitor direction System functions in monitor direction <0> <0> <2> <3> <4> <5> End of general interrogation Time synchronization Reset FCB Reset CU Start/restart Power on Status indications in monitor direction <16> <17> <18> <19> <20> <21> <22> Auto-recloser active Teleprotection active Protection active LED reset Monitor direction blocked Test mode Local parameter setting <23> Characteristic 1 <24> Characteristic 2 <25> Characteristic 3 <26> Characteristic 4 <27> Auxiliary input 1 <28> Auxiliary input 2 <29> Auxiliary input 3 <30> Auxiliary input 4 Page: 4 of 13 PRON NA60-CBA IEC

5 Supervision indications in monitor direction <32> <33> <35> <36> <37> <38> <39> <46> <47> Measurand supervision I Measurand supervision V Phase sequence supervision Trip circuit supervision I>> back-up operation VT fuse failure Teleprotection disturbed Group warning Group alarm Earth fault indications in monitor direction <48> Earth fault L 1 <49> Earth fault L 2 <50> Earth fault L 3 <51> <52> Earth fault forward, i.e. line Earth fault reverse, i.e. busbar Fault indications in monitor direction <64> Start /pick-up L 1 <65> Start /pick-up L 2 <66> Start /pick-up L 3 <67> Start /pick-up N <68> General trip <69> Trip L 1 <70> Trip L 2 <71> Trip L 3 <72> Trip I>> (back-up operation) <73> Fault location X in ohms <74> Fault forward/line <75> Fault reverse/busbar <76> Teleprotection signal transmitted <77> Teleprotection signal received <78> Zone 1 <79> Zone 2 <80> Zone 3 <81> Zone 4 Page: 5 of 13 PRON NA60-CBA IEC

6 <82> Zone 5 <83> Zone 6 <84> General start/pick-up <85> Breaker failure <86> Trip measuring system L 1 <87> Trip measuring system L 2 <88> Trip measuring system L 3 <89> Trip measuring system E <90> Trip I> <91> Trip I>> <92> Trip IN> <93> Trip IN>> Auto-reclosure indications in monitor direction <128> <129> <130> CB 'on' by AR CB 'on' by long-time AR AR blocked Measurands in monitor direction <144> <145> <146> <147> <148> Measurand I Measurands I, V Measurands I, V, P, Q Measurands I N, V EN Measurands I L1,2,3, V L1,2,3, P, Q, f Generic functions in monitor direction <240> <241> <243> <244> <245> <249> <250> <251> Read headings of all defined groups Read values or attributes of all entries of one group Read directory of a single entry Read value or attribute of a single entry End of general interrogation of generic data Write entry with confirmation Write entry with execution Write entry aborted Page: 6 of 13 PRON NA60-CBA IEC

7 8.3.4 Selection of standard information numbers in control direction System functions in control direction <0> <0> Initiation of general interrogation Time synchronization General commands in control direction <16> <17> <18> <19> Auto-recloser on/off Teleprotection on/off Protection on/off LED reset <23> Activate characteristic 1 <24> Activate characteristic 2 <25> Activate characteristic 3 <26> Activate characteristic Generic functions in control direction <240> <241> <243> <244> <245> <248> <249> <250> <251> Read headings of all defined groups Read values or attributes of all entries in one group Read directory of a single entry Read value or attribute of a single entry General interrogation of generic data Write entry Write entry with confirmation Write entry with execution Write entry abort Basic application functions Test mode Blocking of monitor direction Disturbance data Generic services Private data PRON NA60-CBA Page: 7 of 13 PRON NA60-CBA IEC

8 8.3.6 Miscellaneous Measurands are transmitted with ASDU 3. As defined in , the maximum MVAL can either be 1,2 or 2,4 times the rated value. No different rating shall be used in ASDU 3, i.e., for each measurand there is only one choice. Measurand Max. MVAL = rated value times 1,2 or 2,4 Current L 1 Current L 2 Current L 3 Voltage L 1-E Voltage L 2-E Voltage L 3-E Active power P Reactive power Q Frequency f Voltage L 1 - L 2 2 IEC INTERFACE The following IEC facilities are supported by this interface: 1. Initialisation 2. Time Synchronisation 3. Event Record Extraction 4. General Interrogation 5. Cyclic Measurements 6. General Commands 2.1 Physical connection and link layer Connection is available for IEC through the rear RS485 port. It is possible to select both the relay address and baud rate using the front panel interface. Following a change, a reset command is required to reestablish communications. The parameters of the communication are the following : Even Parity 8 Data bits 1 stop bit Data rate 1200, 2400, 4800, 9600, 19200, or bauds Page: 8 of 13 PRON NA60-CBA IEC

9 2.2 Initialisation Whenever the relay has been powered up, or if the communication parameters have been changed a reset command is required to initialise the communications. The relay will respond to either of the two reset commands (Reset CU or Reset FCB), the difference being that the Reset CU will clear any unsent messages in the relay's transmit buffer. The relay will respond to the reset command with an identification message ASDU 5, the Cause Of Transmission COT of this response will be either Reset CU or Reset FCB depending on the nature of the reset command. The following information will be contained in the data section of this ASDU: Internal Software ID: internal Firmware ID ASCII ID: Relay model 2.3 Time synchronisation The relay time and date can be set using the time synchronisation feature of the IEC protocol. The relay will correct for the transmission delay as specified in IEC Spontaneous events The events created by the relay will be passed using the standard function type/information numbers to the IEC master station. Private codes are not used, thus any events that cannot be passed using the standardised messages will not be sent. Events are categorised using the following information: Common Address Function Type Information number The common address is used to differentiate in circumstances where the relay produces more events of a certain type than can be passed using the standardised messages. For example if the relay produces starts and trips for three stages of overcurrent only two stages can be passed using the standardised messages. Using the different common address for two of the overcurrent stages allows each stage to be indicated. 2.5 General interrogation The GI request can be used to read the status of the relay, the function numbers, information numbers and common address offsets that will be returned during the GI cycle are indicated in Cyclic measurements The relay will produce measured values using ASDU 3 on a cyclical basis, this can be read from the relay using a Class 2 poll (note ADSU 9 is not used). It should be noted that the measurands transmitted by the relay are sent as a proportion of either 1.2 or 2.4 times the rated value of the analogue value. The selection of either 1.2 or 2.4 for a particular value is indicated in Page: 9 of 13 PRON NA60-CBA IEC

10 2.7 Commands PRON NA60-CBA A list of the supported commands is contained in The relay will respond to other commands with an ASDU 1, with a cause of transmission (COT) of negative acknowledgement of a command. 2.8 Disturbance records The relay does not support the exchange of disturbance data through the mechanism defined in the IEC standard. 2.9 Blocking of monitor direction The relay does not support a facility to block messages in the Monitor direction Acronyms FUN: : TYPE: COT: BIDI: Function Type Information Number Type of ASDU Cause of Transmission Bidirectional event Page: 10 of 13 PRON NA60-CBA IEC

11 2.11 List of events produced by the relay Two kinds of ASDU can be generated for the events : Type ASDU 1 (time-tagged message) Type ASDU 2 (Time-tagged message with relative time) LIST OF FAULTS DSC NAME NORMALIZE FACTOR RATED VALUE FUN TYP E COT BIDI Trip I> TRIP_IM Trip I>> TRIP_IMM Trip I>>> TRIP_IMMM Trip IE> TRIP_INM Trip IE>> TRIP_INMM Trip IE>>> TRIP_INMMM Trip U< TRIP_IM Trip U<< TRIP_IMM Trip U> TRIP_IM Trip U>> TRIP_IMM Trip UE> TRIP_INM Trip UE>> TRIP_INMM Trip Dth> TRIP_IM Trip IPD> TRIP_IM Trip IPD>> TRIP_IMM Trip IPD>>> TRIP_IMMM Trip IPD>>>> TRIP_IMMMM Trip IED> TRIP_INM Trip IED>> TRIP_INMM Trip IED>>> TRIP_INMMM Trip IED>>>> TRIP_INMMMM Trip 74TCS TC_SUPERVISION X Trip BF BF IN1 AUX_INPUT_ X IN2 AUX_INPUT_ X IN3 AUX_INPUT_ X IN4 AUX_INPUT_ X IN5 AUX_INPUT_ X IN6 AUX_INPUT_ X IN7 AUX_INPUT_ X IN8 AUX_INPUT_ X IN9 AUX_INPUT_ X IN10 AUX_INPUT_ X General start I> GEN_START X General trip I> GEN_TRIP Page: 11 of 13 PRON NA60-CBA IEC

12 2.12 List of data contained in General Interrogation LIST OF DATA CONTAINED IN GI DSC NAME NORMALIZ E FACTOR RATED VALUE FUN TYPE COT IN1 AUX_INPUT_ IN2 AUX_INPUT_ IN3 AUX_INPUT_ IN4 AUX_INPUT_ Trip 74TCS TC_SUPERVISION General start I> GEN_START IN5 AUX_INPUT_ IN6 AUX_INPUT_ IN7 AUX_INPUT_ IN8 AUX_INPUT_ IN9 AUX_INPUT_ IN10 AUX_INPUT_ Page: 12 of 13 PRON NA60-CBA IEC

13 2.13 Cyclic measurements LIST OF CYCLIC MEASUREMENTS DSC NAME NORMALIZ E FACTOR RATED VALUE FUN TYPE COT IL1 MEASURAND_SET1 2,4 In , 1 2 IL2 MEASURAND_SET1 2,4 In , 2 2 IL3 MEASURAND_SET1 2,4 In , 3 2 IE MEASURAND_SET1 2,4 IEn , 4 2 f MEASURAND_SET1 1,2 50Hz , 5 2 UL1 MEASURAND_SET1 2,4 En , 6 2 UL2 MEASURAND_SET1 2,4 En , 7 2 UL3 MEASURAND_SET1 2,4 En , 8 2 UE MEASURAND_SET1 2,4 UEn , 9 2 U12 MEASURAND_SET1 2,4 Un , 10 2 U23 MEASURAND_SET1 2,4 Un , 11 2 U31 MEASURAND_SET1 2,4 Un , 12 2 UEC MEASURAND_SET1 2,4 UECn , 13 2 Alpha1 MEASURAND_SET2 2, , 1 2 Alpha2 MEASURAND_SET2 2, , 2 2 Alpha3 MEASURAND_SET2 2, , 3 2 PhiE MEASURAND_SET2 2, , 4 2 PhiEC MEASURAND_SET2 2, , 5 2 P MEASURAND_SET2 2,4 Pn , 6 2 Q MEASURAND_SET2 2,4 Qn , List of the supported commands COMMANDS DSC NAME NORM. FACTOR RATED VALUE FUN TYPE COT Led Reset MEASURAND_SET Page: 13 of 13 PRON NA60-CBA IEC

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