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PCM30U, PCM30U-OCH – User's, Operating and Maintenance Manual

  

 

 

 

E.2 RO4 

 

The RO4 unit in the PCM30U-OCH is responsible for the two-way transmission of two analogue signal 
channels at a frequency of 50 Hz with accurate transmission of phase and amplitude. This transmission can 
serve for the two-way connection route of the power line comparison protections or for one-way secure 
transmission of the sychronisation signal with a constant voltage amplitude with accurate transmission of 
phase for power unit synchronisation. The security of the synchronisation signal is provided by the return 
control signal, with which the voltage and phase of the signal being transmitted is compared with the control 
signal, which was transmitted back from the signal’s place of delivery.  
The work of the unit in its function of transmission of comparison protections or transmission of the 
synchronisation signal is controlled by jumpers on the unit and by setting, using the DORIS management 
system. 

E.2.1 Description of the function of the RO4 unit 

The unit is composed of 50 Hz interface circuits, A/D an D/A converters, circuits for insertion in the PCM 
framework, Xilinx control circuits and a microcontroller (See Fig. 4 – block diagram of the RO4 unit). The 
RO4 unit processes two 50 Hz two-way analogue signals, with limit up to 2800 Hz. Each signal has a 
transmitting and receiving directions. The analogue signals of the comparison protection are connected to 
the RO4’s four terminals: two for the input (transmitting direction) and two for ouptut (receiving direction). 
During transmission of the one-way synchronisation signal for power unit synchronisation, the return channel 
is dedicated to the feedback control signal. 
An ‘error’ relay output contact is separately (isolatedly) connected to each channel’s separate pair of 
terminals. The ‘out-of-oder’ relay indicates error or interruption of the connection route (the red ERR 
TRANSFER) optic diode and, as an option, also a decrease in the transmitted voltage under the preset level 
in the respective channel (the NO 50HZ 1 or NO 50HZ 2 red optic diode) or an error identified by the 
feedback control signal (the ERR50HZ 1 or ERR 50HZ 2 red optic diode). Using the unit’s jumpers, the make 
and break contact of the ‘error’ relay can be preset for error signalling by closing or opening the contact. A 
fault is signalled by closing or opening the error contact each time simultaneously on both transmission ends. 
Fault on the 1

st

 or 2

nd

 channel is signalled on the side where the fault arose by turning on the respective fault 

red diode (see above), while on the opposite side the red ERR 1 or ERR 2 diodes turn on, and if there is a 
fault or interruption of the transmission route, the ERR TRANSFER red optidiode also turns on. In addition, 
each of the faults (or both simultaneously) is signalled at another pair of terminals by a combined fast 
(through the optic relay) fault message 

Σ

 ERR (by opening the optic relay) on both ends of the transmission. 

The active combined fault signal 

Σ

 ERR is indicated by the turning-n of the red 

Σ

 ERR optic diode on the 

units’ panels – again on both transmission ends. 
The presence of supply voltage in the unit is signalled by the green PWR optic diode on the panel of the 
respective unit. For appropriate functioning of the unit (attainability of a maximum output voltage level at the 
maximum signal load of the 50 Hz signal output), it is necessary to provide a feed voltage Ubat above -43 V, 
i.e. 48 V – 10% (a feed voltage of -48 V-15%, i.e. -41 V suffices for the operation of the remaining units). A 
decrease in the Ubat voltage under -43 V is therefore indicated by the flashing of the green PWR optic diode 
without announcing a fault through the fault contacts (“non-urgent alarm”). The only impact on the work of 
the unit is a reduction of maximum amplitude 50Hz output signal at the maximum load. An increase in the 
unit’s temperature above +75

°

C is signalled in a similar way (as non-urgent alarm) by the flashing of the 

PWR optic diode. The exact Ubat voltage level or the unit’s temperature can be determined by the DORIS 
supervision system.  

E.2.1.1  RO4’s transmitting direction (into transmission path) 

Each RO4 channel’s 50 Hz input is symmetric and has two-level protection against interfering voltage, using 
arresters and transils. This protection is provided between the input conductors in the transverse direction 
and also between each of the two conductors and the unit’s ground, i.e. the ground of the PCM30U-OCH 
station. The transmitting direction is galvanically separated from the unit’s other circuits by a transformer with 
a 4 kV isolation strength. The input voltage is transferred to a lower value through a miniature transformer 

T100

 (0.35 VA) and is further transmitted through a voltage separator (adustable by means of jumpers at 

XJ102) to a 

A1

 amplifier. With jumpers at XJ102 it is possible to select the maximum 50 Hz input’s voltage of 

70 Vrms or 110 Vrms (with fine tuning by a RP100 trimmer during the activation of the unit). The related 

Power Channel Modules 

E-29 

446S037.914.14N00 

Содержание PCM30U

Страница 1: ... TELEKOMUNIKACE s r o Třebohostická 5 100 00 Praha 10 Czech republic Tel 420 234 052 111 Fax 420 234 052 991 Email pcm30u ttc cz Web http www ttc cz Document no 446S037 914 14N00 2005 This document may be changed or altered without notice ...

Страница 2: ... internal source 24 V 30 mA E 14 E 1 7 PBS Technical Parameters E 15 E 1 7 1 General parameters E 15 E 1 7 2 Inputs units with serial number F03 and higher E 16 E 1 7 3 Inputs units with serial number F01 F02 E 17 E 1 7 4 Outputs E 18 E 1 8 Front panel E 19 E 1 9 LED indication E 21 E 1 10 PBS jumpers and mechanical configuration E 23 E 1 10 1 Setting the functioning of ERR1 alarm opto relay E 23 ...

Страница 3: ...l channel at setting B Synch gen E 37 E 2 6 Connector of the RO4 unit E 38 E 2 7 RO4 LED E 39 E 2 8 Front panel settins E 40 E 2 9 Alarm signalling E 41 E 2 9 1 Error fast summation channels 1 2 ERR optic relay E 41 E 2 9 2 Error electromechanical relays for channels 1 and 2 ERR1 ERR2 E 41 E 3 The ROR Module E 42 E 4 Notes E 43 List of Diagrams and Figures E SPECIAL 234 MM MODULES FOR PROTECTIONS ...

Страница 4: ...an electronic switch guarantees the speed of switching while a mechanical relay makes it possible to have permanent high DC current load even at maximum switched voltage Delayed switch off of the electronic switch prevents arc discharge when the mechanical contacts drop put As a standard the combined outputs are equipped with switch on contacts switch off contacts can be supplied on demand closed ...

Страница 5: ...rting commands to full 2 8 Mbps stream through optical cable 1310nm c OS2 converting commands to full 2 8 Mbps stream through optical cable 1550nm d SU64 converting commands to 64 kbps stream with codirectional interface e SUMO converting commands to slow RS232 channel to be transmitted via modem The PWA subrack accommodates one PBS unit PCM30U OCH in the 6OCH4 rack can accommodate up to four PBS ...

Страница 6: ...ded also from seeprom located at backplane in 6OCH8 6OCH4 Unit checks 5 V 3 V and Ubk used for feeding relays Switches are used for basic configuration INPUT 1 4 INPUT 5 10 QUIT PW connecter XC202 OUTPUT 1 4 OUTPUT 5 10 ERR1 ERR2 Ub 24 V unit to backplane connecter XC8 Ub internal data 3 3V 5V converter 5V soft start 5 V 3 V KJ position ext sync V 11 Submodule interface PLD Xilinx V 11 RS232 Micro...

Страница 7: ...ut 1 Output 1 Td E 1 4 2 Input filtering Input filtering is minimal presence of command at input required to be transmitted to remote PBS Shorter input signals are ignored Result is transmission delay Input 1 10 ms Transmission of input 1 to remote PBS Input filtering 0 ms 5 ms 10 ms 5 ms Transmission of input 1 to remote PBS Input filtering 8 ms 8 ms 10 ms Power Channel Modules E 6 446S037 914 14...

Страница 8: ... Input 1 100 ms Transmission of input 1 to remote PBS 50 ms Transmission of input 1 to remote PBS Prolongation to 80 ms 100 ms 100 ms 50 ms 80 ms Transmission of input 1 to remote PBS Prolongation to 150 ms 150 ms 150 ms Transmission of input 1 to remote PBS Prolongation to 200 ms 200 ms 200 ms Power Channel Modules E 7 446S037 914 14N00 ...

Страница 9: ...et and applied only at transmitter side Only pairs input can be and or ed Pairs are build from these combinations 1 7 2 8 3 9 4 10 5 6 7 8 9 10 IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 IN 7 IN 8 IN 9 IN 10 PBS 1 AND OR AND OR AND OR AND OR AND OR AND OR AND OR OUT 1 OUT 2 OUT 3 OUT 4 OUT 5 OUT 6 OUT 7 OUT 8 OUT 9 OUT 10 PBS 2 Output 1 Input 7 Output 7 Power Channel Modules E 8 446S037 914 14N00 ...

Страница 10: ...ion E 1 4 9 PBS to 2x 4PBS Special interconnection of commands designed for transmission from one PBS to two 4PBS Function is performed and selected only et PBS Odd commands are routed to A group even commands are routed to B group This option requires special firmware and is not recommended for direct tripping because is it results in complicated network structure 1 2 3 4 5 6 7 8 9 10 1 2 3 4 1 2...

Страница 11: ...s performed every 10 ms E 1 5 2 Button Test This test is intended to be used at commissioning time or at troubleshooting procedure Purpose is to check individual LEDs and routing when PBS with two direction feature is used Test can be initiated only by pressing Test button at unit for time longer then 500 ms Test cannot be initiated when command is active Since it takes some time approximately 500...

Страница 12: ... false command as a function of bit error rate for different number of repeats Power Channel Modules E 11 446S037 914 14N00 1 00E 42 1 00E 39 1 00E 36 1 00E 33 1 00E 30 1 00E 27 1 00E 24 1 00E 21 1 00E 18 1 00E 15 1 00E 12 1 00E 09 1 00E 06 1 00E 03 1 00E 00 1 00E 04 1 00E 03 1 00E 02 1 00E 01 1 00E 00 BERR Puc PBSPuc PBSPuc2 PBSPuc4 ...

Страница 13: ...nction of bit error rate for different To according to recommendation To 1 2 means that command is stated as lost when delayed more then 1 2 of nominal transmission time Dependability 1 00E 05 1 00E 04 1 00E 03 1 00E 02 1 00E 01 1 00E 00 1 00E 05 1 00E 04 1 00E 03 1 00E 02 BER Pmc 1 1 2 1 5 Power Channel Modules E 12 446S037 914 14N00 ...

Страница 14: ...0 V protection Input Input Input 1 to 4 I to Xilinx Current limiter with optorelay Optocoupler and supporting circuit RC filter to remove glitches Logic level converter Resistor network for nominal voltage selection configurable by jumpers 4 kV and 300 V protection Input Input Input 5 to 10 I to Xilinx Outputs 1 to 4 Switch ON accelerate circuit Optorelay Logic level converter Level converter logi...

Страница 15: ...erter 300 V Protection ERR1 ERR1 jumper switch XJ800 jumper switch XJ801 Electronical error output ERR1 Level converter logic Ubat 300 V Protection Ubat ERR2 ERR2 jumper switch XJ802 Electromechanical error output ERR2 24 V regulator with over current protection 40 mA 30V Protection Internal source 24 V 30 mA I sense U sense GND Ubat 24 V 30 mA GND Power Channel Modules E 14 446S037 914 14N00 ...

Страница 16: ...d while order assembly option SW unit configuration Input command digital filtering 0 48 ms 1 ms Prolonging of command at input 0 10 000 ms 10 ms 0 1200 ms 100 ms 1200 10 000 ms Shortening of command at output 0 1 000 ms 1 ms 0 120 ms 10 ms 120 1000 ms Add and blocking at input Blocking and kvit at output Only one function of kvit and blocking can be used because of they use commonn input KVIT Cap...

Страница 17: ... DC Voltage declining 0 45 0 51 Un 0 59 0 64 Un Voltage increasing 0 6 0 65 Un 0 6 0 65 Un Un 48 V DC Voltage declining 0 46 0 52 Un 0 59 0 64 Un Voltage increasing 0 6 0 65 Un 0 6 0 65 Un Un 24 V DC Voltage declining 0 48 0 54 Un 0 59 0 64 Un Input hysteresis Inputs 1 4 Inputs 5 10 ACK input For all nominal voltages 0 08 0 22 Un 0 005 0 03 Un Threshold level can be customized on demand Input curr...

Страница 18: ...ing 0 6 0 75 Un 0 6 0 75 Un Threshold voltage Uth Voltage declining 0 45 0 6 Un 0 58 0 73 Un Hysteresis 0 08 0 22 Un 0 008 0 02 Un Threshold level can be customized on demand Input current at nominal voltage Ui Un Selected nominal voltage Un Inputs 1 4 Inputs 5 10 ACK input 220 VDC 3 0 mA 20 2 5 mA 20 110 VDC 3 0 mA 20 2 5 mA 20 48 VDC 3 0 mA 20 2 5 mA 20 24 VDC 3 0 mA 20 2 5 mA 20 Input current b...

Страница 19: ...en closed contact current A DC 0 2 s L R 10 ms Outputs 1 4 5 280 V 4 A 4 A 30 A Outputs 5 10 5 280 V 1 A 1 A 1 5 A Electronic alarm relay 5 280 V 1 A 1 A 1 2 A 24 V 4 A 1 2 A 48 V 1 5 A 0 5 A 60 V 1 A 0 4 A 110 V 0 6 A 0 22 A 220 V 0 4 A 0 1 A Electromechanical alarm relay 280 V 0 3 A 0 06 A 4 A Failure relays electromechanical switch ERR2 Optionally on off switch electronic switch ERR1 Optionally...

Страница 20: ...starts automatic transmission test of commands 1 10 Reset button Pres and release to reset PBS M interface connector management channel for control equipment RB ant M interconnection LM Local Management channel interface Interface K1 of submodule PWA option Interface K2 of submodule PWA option Display optional Power Channel Modules E 19 446S037 914 14N00 ...

Страница 21: ...ntenance Manual E 1 8 2 Channel module variant PBS Reset button Pres and release to reset PBS Display optional Test button Long pushing the button starts automatic transmission test of commands 1 10 Power Channel Modules E 20 446S037 914 14N00 ...

Страница 22: ...es in operational state Yellow High BER slip at line interface 1 2 Yellow flashing Loop at line interface 1 2 Laser permanently ON Red Loss of signal IN Orange Input command active Orange and test Command being tested Orange flashing and TEST Test error at this command OUT Orange Output command active Orange and test Command being tested Orange flashing and TEST Test error at this command E2 other...

Страница 23: ...eing tested Orange flashing and TEST Test error at this command E2 other alarms Red Single bit error light prolonged to 100 ms 48 V DC for relays and bias source below threshold Opposite PBS error simplex mode Yellow flashing Service alarm Data signal loop detected Green Not specified IN Orange Input command active Orange and test Command being tested Orange flashing and TEST Test error at this co...

Страница 24: ...voltage command jumper 24 V 48 V 110 V 220 V 1 XJ200 2 3 1 2 3 4 1 2 2 XJ220 2 3 1 2 3 4 1 2 3 XJ240 2 3 1 2 3 4 1 2 4 XJ260 2 3 1 2 3 4 1 2 5 XJ280 2 3 1 2 3 4 1 2 6 XJ300 2 3 1 2 3 4 1 2 7 XJ320 2 3 1 2 3 4 1 2 8 XJ340 2 3 1 2 3 4 1 2 9 XJ360 2 3 1 2 3 4 1 2 10 XJ380 2 3 1 2 3 4 1 2 Qvit XJ400 2 3 1 2 3 4 1 2 Gray marked fields indicates factory default settings E 1 10 4 Configuration switches S...

Страница 25: ...SA3 1 2 3 4 4 OFF R116 R117 R118 R119 M management address in binary form Configuration lock protection against bad manipulation pin 3 PBS functions pin 4 PWA functions For future use Identification for group B Identification for group A Direction of view From connector XC201 to front panel Fig 3 Setting points of the PBS module Power Channel Modules E 24 446S037 914 14N00 ...

Страница 26: ...ommand 7 input c6 IN8 c8 IN8 Command 8 input c10 IN9 c12 IN9 Command 9 input c14 IN10 c16 IN10 Command 10 input c18 OUT7 c20 OUT7 Command 7 output c22 OUT8 c24 OUT8 Command 8 output c26 OUT9 c28 OUT9 Command 9 output c30 OUT10 c32 OUT10 Command 10 output e2 OUT1 e4 OUT1 Command 1 output e6 OUT2 e8 OUT2 Command 2 output e10 OUT3 e12 OUT3 Command 3 output e14 OUT4 e16 OUT4 Command 4 output e18 OUT5 ...

Страница 27: ...0 16 AWG Outer diameter of insulation 1 6 2 8 mm Insulation stripping length 3 5 to 4 mm 3 5 4 Removal tool TTC 1900274 Connector with grub screws contacts 32 screws e c a 32 2 Recommended wire diameter 1 wire or cable 0 22 2 5 mm 24 14 AWG Insulation stripping length 8 mm 0 5 mm 8 0 5 Recommended screwdriver 3 5 0 5 mm Recommended tightening torque 0 6 Nm Power Channel Modules E 26 446S037 914 14...

Страница 28: ...t may be initiated from opposite unit TEST Orange flashing Test not successfully completed Press shortly TEST button to acknowledge test fail Search IN and OUT led s for flashing ones to see where test failed Check routing commands a membership in groups A B at this and opposite PBS s Off Operational state LM Green Active communication at LM interface Disconnect cable Active LM communication disab...

Страница 29: ...synchronization single errors may be caused by slips 2 Internal battery voltage under tolerance below 40 V DC Green Non Urgent alarm E2 Yellow flashing Service alarm Data signal in loop detected 1 Check loop id It must be different at opposite PBS s 2 Check data path for loops CJAB flashes cooperating equipment 1 When changing PBS be sure that it has the same HW and FW configuration E 1 15 Toleran...

Страница 30: ...ission ends Fault on the 1 st or 2nd channel is signalled on the side where the fault arose by turning on the respective fault red diode see above while on the opposite side the red ERR 1 or ERR 2 diodes turn on and if there is a fault or interruption of the transmission route the ERR TRANSFER red optidiode also turns on In addition each of the faults or both simultaneously is signalled at another...

Страница 31: ...about 0 45 ms i e an about 8 difference in phase The output signal of the comparison circuit is time filtered through a circuit with a time constant of about 200 ms E 2 1 2 RO4 s receiving direction The input of the RO4 is the receiving bus BUS RECEIVING 2 Mbit s The circuit of the gate array PLD XILINX identifies and reads the content of the respective channel intervals along which the digitally ...

Страница 32: ...Digital delay switch ms1 ms2 may not be used in a unit set for the Comparison Protection function because an actual time delay is involved which would then cause delayed response to overvoltage or short circuit on the protected power line analogue delay or phase lead is in fact phase shift through the analogue corrector of phase which does not cause any change to the actual time delay in the signa...

Страница 33: ...osstalk ratio between adjacent subchannels 60 dB Signal to noise ratio to rated output level in idle channel 60 dB high 50 kΩ medium for DLN910 5 kΩ 10 Input impedance options for the 50Hz signal low for S103B S105 2 kΩ 10 Time of 50Hz signal transmission without additional setting of delay about 0 3 ms Delay setting in each channel s transmitting direction using dig delay switch at the unit s pan...

Страница 34: ...the coil of the relay 2 XJ102 PLD XILINX Microcontroller 1 8 XJ1 HW mode configuration 10 bit Transmitting BUS M1 Receiving BUS M1 SKIM TAKT 2048 kHz SYNN 500 Hz Position in subrack Program memory WATCHDOG SW3 RESET on panel 5 V 2 nd channel RO4 Management IP XJ103 overvoltage protection OFF1 OFF1 OFF2 ERR1 ERR2 OFF2 48V RP101 GAIN 1 RP102 φ 1 RP100 XJ105 XJ300 Parallel operation with2 nd channel ...

Страница 35: ...PCM30U PCM30U OCH User s Operating and Maintenance Manual E 2 4 Setting points of the RO4 unit Fig 5 Setting points of the RO4 unit Power Channel Modules E 34 446S037 914 14N00 ...

Страница 36: ... checking Jumpers installed Jumpers installed Output disconnected from input check not used E 2 5 3 Input resistance RIN 50Hz 1st channel 2nd channel XJ101 XJ102 50 kΩ 5 kΩ 1 2 1 2 2 kΩ 2 3 2 3 E 2 5 4 Maximum input voltage Max input UIN 50Hz 1st channel 2nd channel Information for Doris XJ102 XJ202 XJ8 2 110 Vrms 1 2 1 2 not installed 70 Vrms 2 3 2 3 installed E 2 5 5 Maximum output voltage Max i...

Страница 37: ...e lead 1st channel 2nd channel XJ105 XJ205 Small analogue phase lead ϕ about 50 500 µs 1 1 Great analogue phase lead ϕ about 0 4 5 ms 2 2 Fine tuning on the panel of the unit 0 to 0 5 ms The mark is affected by XJ104 XJ204 ϕ1 ϕ2 E 2 5 10 Error signalling 1st channel 2nd channel XJ106 XJ206 made 2 3 Fault contact ERR1 at a fault broken 1 2 made 2 3 Fault contact ERR2 at a fault broken 1 2 E 2 5 11 ...

Страница 38: ...UT In addition it is also necessary on this unit to set the UOUT 50 Hz at max 100 Vrms and to set the UIN 50 Hz at max 110 Vrms Then it is necessary on this unit to set the output voltage of the 50Hz signal using the GAIN1 GAIN2 trimmers on the panel and compensate the construction phase lead of the RO4 unit s 50Hz signal about 0 7ms lowered by the delay given by the transmission of the 2 Mbit s s...

Страница 39: ...nel a26 OFF2 Input for the blocking of the output of the 2nd channel a28 a30 GND a32 GND ground e2 e4 e6 OUT1a e8 OUT1b Output of channel 1 50Hz signal e10 ERR1 e12 ERR1 Fault in channel 1 the fault relay anchor dropped the status of the contacts can be selected using XJ206 jumper e14 e16 e18 e20 OUT2a e22 OUT2b Output of channel 2 50Hz signal e24 ERR2 e26 ERR2 Fault in channel 2 the fault relay a...

Страница 40: ...Error ERR 50 Hz 1 Red Fault in phase or amplitude of the feedback check channel 1 Channel 1 overexcitation NO 50 Hz 1 Red Input voltage of 50Hz channel 1 is below the preset limit ERR 50 Hz 1 Red Urgent error in channel 1 Transmission error Distant alarm Other alarm on channel 1 PWR Green Power supply in tolerance Flashing Power supply voltage 48 V is smaller than 43 V Power Channel Modules E 39 4...

Страница 41: ...and Maintenance Manual E 2 8 Front panel settins HW reset button Fine digital delay adjustment Fine trimming adjusting of output voltage Analogue delay or phase lead As selected by XJ104 XJ204 Power Channel Modules E 40 446S037 914 14N00 ...

Страница 42: ...lectromechanical relays for channels 1 and 2 ERR1 ERR2 Error relay contacts closed relay without excitation make break contact closed Error relay contacts opened relay without excitation make break contact open 1st channel XJ106 connected 2 3 2nd channel XJ206 connected 2 3 1st channel XJ106 connected 1 2 2nd channel XJ206 connected 1 2 Contact status when the relay coil is not excited Error Fig 7...

Страница 43: ...tive protection of DZL ROR 1 INP1a Channel 1 input 2 INP1b Channel 1 input 3 OUT1a Output contact 1 4 OUT1b Output contact 1 5 BLOCK1a Error contact 1 6 BLOCK1b Error contact 1 7 GND Electrical grounding 8 INP2a Channel 2 output 9 INP2b Channel 2 output 10 OUT2a Output contact 2 11 OUT2b Output contact 2 12 BLOCK2a Error contact 2 13 BLOCK2b Error contact 2 14 GND Electrical grounding 15 RBLOCK Qu...

Страница 44: ...PCM30U PCM30U OCH User s Operating and Maintenance Manual Power Channel Modules E 43 446S037 914 14N00 E 4 Notes ...

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