GGTronics ssdac

2,227 views
2,037 views

Published on

Published in: Technology, Business, Sports
1 Comment
2 Likes
Statistics
Notes
No Downloads
Views
Total views
2,227
On SlideShare
0
From Embeds
0
Number of Embeds
8
Actions
Shares
0
Downloads
84
Comments
1
Likes
2
Embeds 0
No embeds

No notes for slide

GGTronics ssdac

  1. 1. G.G.Tronics SSDACIt is an Versatile Axle counting system configurable as 2DP1S, 3DP1S, 3DP2S (IBS), ASThis is a fail-safe microcontroller based system with 2 out of 2 architecture suited for proving Block Section and Entry/Exit of station.
  2. 2. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: The system consists of a Start Fed Unit (SF), an End Fed Unit (EF) housed in location boxes adjacent to the track with associated axle detectors web mounted on the track. The distance between the unit & the detectors being 15m max. The block section to be monitored can be up to 25Kms. This is a rugged system & dispatched as a full package of assembled & tested equipment, to make installation & maintenance easier & quicker. The SF & EF units communicate with each other in FSK mode at 1200bauds over a single pair of quad cable..
  3. 3. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: A diagnostic routine will be running continuously in both the units & will be exchanging information through communication over quad cable. The axle detectors are fed with 21 KHz & 25 KHz in both SF & EF units. VR & PR relays are provided in the relay box along with the system in the location box. The system is based on phase reversal technology wherein the Tx & Rx signals will be in phase under no train condition & will be out of phase during detection of a wheel/axle.
  4. 4. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: The system is designed to work with 90-R, 52Kg, 60Kg rails. The system is suitable for axle detection for train speed from 0 to 250KMPH with recognition of direction of movement of train.. The system can tolerate a vertical limit of worn out rail specified by RDSO as indicated below Sl. No. Rail Section Vertical wear in mm 1 60 Kg / meter 13.00 2 52 Kg / meter 8.00 3 90 R 5.00
  5. 5. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: Very much suitable for last vehicle detection. Can work in RE/Non RE areas satisfactorily The system senses wheels above 550mm dia, by which only train wheels are detected & trolley wheels are ignored. Motor trolley wheels are not counted & also will not lead to error condition. Two consecutive motor trolleys entering the same section within a time gap of more than 6 seconds are allowed & will not cause the system to go to error. One motor trolley following a train is allowed.
  6. 6. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: LED s are provided on individual modules for indication of different stages of the working of the system. Seven segment displays are provided on CPU module for bold display of status & error codes. LCD display modules of the unit & reset box provide plain English messages of status & error codes making the system highly user friendly during installation, commissioning & maintenance. For resetting the system under different conditions, interactive & intelligent reset box is provided in the station.
  7. 7. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: The system accepts co-operative reset with piloting of a train or direct reset with/without line verification depending upon the field conditions. If one field unit is reset & the second one is not reset within 5 minutes the reset initiation automatically gets cancelled. A 48V potential (from the 24V supply) is developed within the reset box for effecting the reset of the system. A voltage window circuit ensures that the reset potential is maintained within the limits of 36 to 52V. Foolproof working is ensured in hardware with polarization for avoiding mix up of positioning of modules in SF/EF units.
  8. 8. G.G.Tronics SSDACSalient features of SSDAC-G36, 2DP-1S: Co-existence of multiple units without interference is achieved by having 255 unique addresses through software. Amply protected with fuses & surge arrestors. Water clogging/flooding of track does not affect the working of the system. Anti theft fixing bolts are provided for the coils on the track. Deflectors are also provided for avoiding damage to the detector coils. The system works OFF 24V DC with a range of 20%, the average current drain being <1.5Amps The system can work between -10 to +70 C.
  9. 9. Installation Details – Cable requirement Station A Station B2 Core ½ quad 2 Core Al to 6 Core 1.5sqmm 6 Core 1.5sqmm ½ quad AlPower Reset Copper for Copper for to Powercable box Repeater relays Repeater relays Reset cable and Reset and Reset box START Maximum 25 Kms END FED Modem Communication ½ Quad Cable FED Evaluator Evaluator 21 KHz 25 KHz 21KHz 25 KHz Tx-1 Tx-2 Tx-1 Tx-2 Rx-1 Rx-2 Rx-1 Rx-2 21 KHz 25 KHz 21 KHz 25 KHz
  10. 10. G.G.Tronics SSDACInstallation Details – Typical Installation- 2DP
  11. 11. G.G.Tronics SSDACEvaluator Cabinet And Its Cards Positions
  12. 12. G.G.Tronics SSDACPositions of the Cards Phase Detector Card-1 Phase Detector Card-2 DC-DC Converter Event Logger SM CPU/ CPU-1 CPU-2 Common for all Configurations like EF, SF and CF
  13. 13. Phase Detector Card-1 Positions of the Cards Phase Detector Card-2 CPU-1 COM-2 CPU-2 Relay Driver-2Start Fed Dummy Dummy SM CPU/ Event Logger G.G.Tronics SSDAC DC-DC Converter
  14. 14. Phase Detector Card-1 Positions of the Cards Phase Detector Card-2 CPU-1 Dummy CPU-2 DummyEnd Fed COM-1 Relay SM CPU/ Driver-1 Event Logger G.G.Tronics SSDAC DC-DC Converter
  15. 15. Phase Detector Card-1 Positions of the Cards Phase Detector Card-2 CPU-1 COM-2 CPU-2 Relay Driver-2Center Fed COM-1 Relay SM CPU/ Driver-1 Event Logger G.G.Tronics SSDAC DC-DC Converter
  16. 16. G.G.Tronics SSDACPolarization of the Cards Polarization of the Cards prevents wrong insertion of the cards
  17. 17. Wheel Detection Principle
  18. 18. G.G.Tronics SSDACWheel Detection Principles  Phase detection employed  Signals fed at 21Khz and 25Khz to Tx coils – at 60V  Phase of signal output of Rx compared with Tx  AT PD Module/Card :  Under No wheel Tx and Rx signals will be 180° OUT-OF-PHASE >10V  Under wheel condition Tx and Rx will be IN-PHASE <1V  These are fed to CPU at 5V and 0V  Wheels above 550mm diameter only are detected  For a train at 250Kmph, pulse width is about 2.2ms  Frequency of Scanning by processor for PD signal is 300µs – 7 times for every wheel
  19. 19. G.G.Tronics SSDACWheel Detection Principle Transmitter coil Input and Reference Signal Receiver Coil Output (Normally 180⁰ out ofphase under No wheel) Wheel between Tx and Rx coilReceiver Coil Output Under Wheel Between t1 and t2 Once again Phase shifted and now IN Phase shifted by 180⁰ and PHASE with Decreased AmplitudeTx / Reference Signal t0 Time t1 t2
  20. 20. G.G.Tronics SSDACWheel Detection Principle Wheel between Tx and Rx coil Receiver Coil Output Under Wheel 10V Rectified Voltage Schmitt triggercorresponding Threshold to the Phase 1V Shift 0V 5V PD Card Output 0V Equivalent Digital 1 1 1 1 0 0 1 1 1 1 data t0 Time t1 t2
  21. 21. G.G.Tronics SSDACWheel Detection Principle (Trolley Wheel) Receiver Coil Output Under Trolley Wheel Trolley Wheel between Tx and Rx coil Rectified 10V Voltagecorresponding Schmitt trigger to the Phase threshold Shift 1V 0V PD Card Output 5V Equivalent Digital 1 1 1 1 1 1 1 1 1 1 data 0V t0 Time t1 t2
  22. 22. G.G.Tronics SSDACDifferentiation of wheelsTrain Trolley Wheel - Count The wheel with Diameter more than 550mm 1 1 1 0 0 1 1 1 PD-1 1 1 1 1 0 0 1 1 PD2 OverlapMotor Trolley Wheel - No Count The wheel with Diameter less than 550mm 1 1 1 0 0 1 1 1 PD-1 1 1 1 1 1 1 0 0 PD-2 No Overlap
  23. 23. G.G.Tronics SSDACDifferentiation of wheelsWheel Detection - Dip Lorry - No Count The Dip Lorry wheel with Diameter less than 550mm and lesser wheel flange 1 1 1 1 1 1 1 1 PD-1 1 1 1 1 1 1 1 1 PD-2 No Pulse and No Detection
  24. 24. G.G.Tronics SSDACDIFFERENT CONFIGURATIONS OF THE SYSTEM
  25. 25. G.G.Tronics SSDAC2DP1S Configuration:Operation on Straight Lines Station or Block Section.Communication using Single pair quad cable.Preparatory reset configurable either with or without Piloting.PR and VR contacts available at each detection points.
  26. 26. G.G.Tronics SSDACSystem Configuration - 2DP1S Version Start Fed Legend : End Fed RD1, RD2  Relay Drive Card Com1, Com2  Communication Card VR RD2 VR RD1 SF  Start Fed EF  End Fed PR DAC-1 VR  Vital Relay PR DAC-2 PR  Preparatory Relay Com2 Com1 DAC-1 DAC-2 Relay Drv-2 Relay Drv-1 Com-2 DC-DC Converter(+24V) DC-DC Converter(+24V) Phase Detector Card-1 Phase Detector Card-2 Phase Detector Card-1 Phase Detector Card-2 Event Logger Event Logger SM-CPU SM-CPU Com-1 CPU-1 CPU-2 CPU-1 CPU-2 2DP Card Configuration in SSDAC G36
  27. 27. G.G.Tronics SSDAC3DP1S Configuration:Operation on Point Zones/ Set of Points.Communication using Single pair quad cable.Detection at any points and clearing at any points.Preparatory reset with Line Verification.
  28. 28. VR Phase Detector Card-1 Phase Detector Card-2 RD2 CPU-1 Com-2 Unit A DAC-1 CPU-2 Relay Drv-2 Com1 Com2 DAC-1 Com-1 SM-CPU Event Logger VR DC-DC Converter(+24V) RD2 Phase Detector Card-1 Unit B DAC-2 Phase Detector Card-2 Com1 Com2 System Configuration - 3DP-1S CPU-1 Com-2 CPU-2 Relay Drv-2 VR DAC-2 Com-1 SM-CPU Event Logger RD2 DC-DC Converter(+24V) Unit C DAC-3 Com1 Com23DP Card Configuration in SSDAC G36 Phase Detector Card-1 VR Phase Detector Card-2 G.G.Tronics SSDAC CPU-1 Com-2 Legend : RD1, RD2 CPU-2 Relay Drv-2 DAC-3 Com-1 SM-CPU Event Logger  Vital Relay DC-DC Converter(+24V)  Relay Drive Card Com1, Com2  Communication Card
  29. 29. G.G.Tronics SSDAC 3DP2S (IBS) Configuration:Operation on two consecutive sections on a straight Line (IBS Configuration.Communication using Single pair quad cable.Preparatory reset configurable either with or without Piloting.PR and VR contacts available at all detection points.
  30. 30. Phase Detector Card-1 PR A SFVR-A Phase Detector Card-2 CPU-1 Com-2 Reset-SF RD2 Section-A CPU-2 Relay Drv-2 SF DAC-SF Com2 Station-A SM-CPU Event Logger Reset-CF Section-B DC-DC Converter(+24V) System Configuration - 3DP-2S Phase Detector Card-1 PR A PR B CFVR-A CFVR-B Phase Detector Card-2 CPU-1 Com-2 CPU-2 RD2 Relay Drv-2 CF Com-1 DAC-CF RD1 SM-CPU Relay Drv-1 Com1 Com2 Event Logger DC-DC Converter(+24V) Phase Detector Card-13DP-2S Card Configuration in SSDAC G36 PR B Phase Detector Card-2 EFVR-B G.G.Tronics SSDAC CPU-1 Reset-CF Section-A EF CPU-2 RD1 Com1 Com-1 Station-B DAC-EF SM-CPU Relay Drv-1 Event Logger Reset-EF Section-B DC-DC Converter(+24V)
  31. 31. G.G.Tronics SSDACAS or Auto Signalling Section A Section B Section C Section n+1 Block 1 Block 2 Block n+1  Operation on continuous sections in suburban areas or on a long track  Up to 128 SSDAC’s can be daisy chained in series  Communication using single pair / half quad cable or OFC voice channel  Option of Preparatory Reset with or without piloting
  32. 32. G.G.Tronics SSDACFIXING OF TRANSDUCERS: 60 Kg 60 Kg 52 Kg 52 Kg 90 Lb 90 Lb
  33. 33. G.G.Tronics SSDACFIXING OF TRANSDUCERS:  Tx & Rx coils to be fixed on the rails by drilling 14mm dia holes with the help of the jig provided for fixing the distance of the holes from bottom on different rails  These coils are fixed to the rails through tamper proof bolts.  Tx & Rx coils are supplied with 15m cables. Each pair has to be taken up to the system independently through HDPE pipes.
  34. 34. G.G.Tronics SSDACFIXING OF TRANSDUCERS: Axle detector coils web mounted on to a track
  35. 35. G.G.Tronics SSDACTypical SSDAC-G36 Unit Relay Drive Card PD Cards CPU Cards Event Logger Card Communication 24VDC Power Supply Card
  36. 36. G.G.Tronics SSDACConfiguration of CPU: For setting the configuration & address, berg sticks are provided with links. These links have to be set as per the requirement.
  37. 37. G.G.Tronics SSDACStart Fed Configuration:
  38. 38. G.G.Tronics SSDACEnd Fed Configuration:
  39. 39. G.G.Tronics SSDACCPU Address Setting of SF: Jumper Settings LK10 LK11 LK12 LK13 LK14 LK15 LK16 LK17 Address Assigned LSB MSB 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 2 ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ 0 0 1 1 1 1 1 1 252
  40. 40. G.G.Tronics SSDACCPU Address Setting of EF: Jumper Settings LK10 LK11 LK12 LK13 LK14 LK15 LK16 LK17 Address Assigned LSB MSB 1 1 0 0 0 0 0 0 3 0 0 1 0 0 0 0 0 4 ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ 0 1 1 1 1 1 1 1 254
  41. 41. G.G.Tronics SSDACAddress Scheme for 2DP1S: Group Group SF EF SSDAC Unit Local Local Stat Fed End Fed Address Address SSDAC CPU-1 001 CPU-1 003 1-2 CPU-2 002 CPU-2 004 SSDAC CPU-1 005 CPU-1 007 3-4 CPU-2 006 CPU-2 008 SSDAC CPU-1 009 CPU-1 011 5-6 CPU-2 010 CPU-2 012 ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ SSDAC CPU-1 251 CPU-1 253 ‘n’ CPU-2 252 CPU-2 254
  42. 42. G.G.Tronics SSDACHARDWARE MODULES AND CARDS Functions of Each Card and their settings
  43. 43. G.G.Tronics SSDACPHASE DETECTOR CARD (PD-1)  It generates 21 Khz Signal and feeds to Tx1 Coil.  It Receives 21 Khz Signal from Rx1 Coil.  It detects the Amplitude and phase of the Received signal.  It generates a pulse depending on the amplitude and phase reversal of the signal.
  44. 44. G.G.Tronics SSDACPHASE DETECTOR CARD (PD-2)  It generates 25 Khz Signal and feeds to Tx2 Coil.  It Receives 25 Khz Signal from Rx2 Coil.  It detects the Amplitude and phase of the Received signal.  It generates a pulse depending on the amplitude and phase reversal of the signal.
  45. 45. G.G.Tronics SSDACMonitoring Points of PD cards As soon as power on Tx ON and SUP OK indications should glow Wheel Main and Wheel Sec Indications should be OFF. That Indicates the Tx and Rx coil connections are correct. And the Transmitted signal and Received signals are in phase
  46. 46. G.G.Tronics SSDACMonitoring Points of PD Cards On other hand along with Tx ON and Sup OK green indications if Wheel Main and Wheel Sec Red indications are also glowing. That Indicates the Transmitted and Received signals are 180˚ out of phase without wheel over the coils Then change the polarity of receiver coils cable at termination. Then Wheel Main and Wheel Sec Red indications disappears.
  47. 47. G.G.Tronics SSDACPHASE DETECTOR CARD (PD-1 & PD-2) Module Monitoring Point Name Expected values With wheel Without wheel RX-SIG and GND (Rx Adj) 900 mV to 1.2 V AC < 350mV AC PHASE SUP-OUT and GND 4V to 5V DC 3V to 3.9V DC DETECTOR Wheel Main and GND 4.5v to 5V DC < 100mV (PD1 & PD2 ) Wheel Sec and GND 4.5v to 5V DC < 100mV RX Phase Sig and GND 10V to 12V DC <1V (Phase Adj) Sup Level and GND (Sup Adj) 4V to 5V DC 3V to 3.9V DC
  48. 48. G.G.Tronics SSDACCPU-1 It receives the pulses from PD1 and PD2 and  Establishes the direction  Counts the number of wheels.  Adds the counts to IN or OUT Count register. with the help of software installed in it. It compares the counts of CPU-2 and the counts of Remote end counts and gives the clear/occupied decision of the section. It continuously monitors the health of the evaluator and its accessories. It displays the error code through two seven segment displays.
  49. 49. G.G.Tronics SSDACCPU-1 Here both the CPUs are of similar hard ware and similar software. Both the CPUs process the same data separately and gives the decision separately.  Failsafe 2 out of 2 architecture for controlling and monitoring the SSDAC for reliable operation  Houses the system software that schedules the overall operation as per configuration
  50. 50. G.G.Tronics SSDACMonitoring Points of CPU-1 & 2 Module Monitoring Point Name Measured Values range CPU-1 EN1B O/P and GND 11.5V to 12.5v DC (for SF, CF, 3DP1S units EN1A O/P and GND 11.5V to 12.5v DC (for EF, CF) CPU-2 EN2B O/P and GND 11.5V to 12.5v DC (for SF, CF, 3DP1S units EN2A O/P and GND 11.5V to 12.5v DC (for EF, CF)
  51. 51. G.G.Tronics SSDACRelay Drive Card Relay Driver card receives instructions from CPU for actuating Vital relay for blocking a section as soon as the first axle is detected. It is cleared after both IN and OUT counts of the section match. Expected Module Monitoring point values RELAY DRIVE 1 VITAL RLY A O/P (+) > 20V DC (for EF, CF) VITAL RLY A O/P (-) RELAY DRIVE 2 VITAL RLY B O/P (+) > 20V DC (for SF, CF, 3D units) VITAL RLY B O/P (-)
  52. 52. G.G.Tronics SSDACCOMMUNICATION CARDS (COM1 & COM2)  Communication between two SSDAC systems is through FSK communication at 1200bps V.23 standard along with CRC check  Vital data like axle counts and system status are transmitted/received between the SSDAC system units  The digital data packet (consisting of count information, Direction information, Health of the equipment, Any error messages) generated by CPU is converted into analog form and sends to remote end evaluator through FSK communication.  On other hand the information received in analog form from remote end evaluator is converted into digital and gives to CPUs.
  53. 53. G.G.Tronics SSDACCOMMUNICATION CARDS (COM1 & COM2) Tx Green indication should flash indicating that it is transmitting data. Rx Green indication should flash indicating that it is Receiving data. CD Green indication should flash indicating that carrier is available between the two evaluators. Clear to Send Indication. It should be flashing. Request to Send Indication. It should be flashing.No measuring points were given on Communication card.
  54. 54. G.G.Tronics SSDACDC-DC Converter card  Generates required multiple power outputs from 24VDC input
  55. 55. G.G.Tronics SSDACMonitoring Points DC-DC Converter Module Monitoring point Expected values +5VDC and GND 4.75 to 5.25V DC +18VDC and GND 17.75 to 18.25V DC DC-DC Converter +12VDC and GND 11.75 to 12.25V DC -12VDC and GND 11.75 to 12.25V DC +24VDC and GND 22V to 26V DC
  56. 56. G.G.Tronics SSDACSM CPU and Event Logger Card  SM-CPU or Event Logger Card  Monitors the SSDAC system and logs vital events during normal and error operation with date and time stamp  As many as 95 different events are recorded  Optional display connected to Event Logger Card displays the communication errors happening in Real-time which aids in assessing the health of communication channel  Event logged during normal operation  Communication status ok  Vital and Preparatory Relay pickup / drop  Reset operations  Event logged during error operation  Communication link fail  System down due to failure of any card  Vital and Preparatory Relay error status  +5 VDC variations  Errors
  57. 57. G.G.Tronics SSDACPrecautions to be taken for trouble free operationPower Supply-24DC:  Use Axle Counter type , ripple free Charger  Use 120 AH battery with adequate life  Use 25 sq mm AL cable for feeding power to the system  Provide class ‘B’ Surge Protector at source of 24 V DC in station  Avoid tapping of different loads to the power source of Axle Counter
  58. 58. G.G.Tronics SSDACPrecautions to be taken for trouble free operation Quad Cable:  Loss should be less than 30 db between SF and EF(1.2 db/km)  Every joint adds loss to the cable, minimize joints and take care for making good permanent joints .  Insulation resistance to be more than 10 M ohms at 100 V DC between conductors ,between pairs and between wire and armor  Loop resistance to be within 56 ohms/km  Maintain continuity of armor between SF and EF & earth at both ends .
  59. 59. G.G.Tronics SSDACPrecautions to be taken for trouble free operation Parallel Circuits:  It has come to notice that usage, termination and wiring of quad cable is far from satisfactory for trouble-free working of digital axle counters. Basic issue pertains to electromagnetic interference from parallel circuits in the cable and location. Following guidelines are recommended to enhance performance of DAC systems.  Long parallel circuits shall be avoided in the same quad. Requirement is that parallel circuit shall be as far spaced as possible. So, one long and one short circuit can be accommodated in same quad but not both long circuits.  DAC circuits in BPAC of up and down lines in double line sections shall be in separate quads and kept one/two quads away from each other as far as possible to avoid mutual interference due to long parallel circuits.  DAC circuits in location shall not bunched along with parallel relay/power circuits. Relay circuits are known to generate switching transients that can couple enough energy in parallel circuits nearby and interference with low power circuits data circuits.  Any other parallel wiring (relay circuits/power circuits/earthling wires etc) shall cross DAC circuits at perpendicular and any parallel portion shall be kept at minimum 150mm lateral distance away from the wiring for DAC circuits.  Relay circuits shall preferably be not taken in the same cable as DAC circuits. In unavoidable circumstances relay circuits shall be in furthest quad (spatially) from the one containing DAC circuits.
  60. 60. G.G.Tronics SSDACPrecautions to be taken for trouble free operation Twisting of Cable Pairs:  Twisted pairs are required to avoid mutual interference between low level ac signals. Even short lengths of non-twisting (few inches) can couple enough differential mode electromagnetic signals to interfere with low voltage DAC communication signals.  Quad cable twisting shall be ensured during termination so that minimum one twist per inch is maintained till the last inch into terminations.  Any wiring from quad cable terminations to equipment shall be done by using twisted singles of indoor signaling cable (1mm square) or any other approved indoor twisted pair cable.  Signaling cable or any other untwisted pair cable shall never be used in DAC communication circuits to avoid intermittent type of failure.
  61. 61. G.G.Tronics SSDACPrecautions to be taken for trouble free operation Continuity and Earthing of cable armor & screen at intermediate terminations/Joints:  Screening of quad cable of effective when induced current can flow in the screen thereby canceling/reducing the induction for the cable conductors. For adequate induced current to flow in screen, it is necessary that good earth connections are provided for screen & armor at all the cable terminations and joints.  Quad cable screen & armor shall be made continuous at the intermediate terminations/joints by soldering and connecting both ends of cable screens & amours at the locations.  Connections to screen shall preferably be made by metallic clamps soldered to screen to ensure good surface connection for electrical continuity.  Combined earthing for both ends of armor and screen at intermediate locations shall be ensured to be in good condition and having values as low as possible but never more than 5Ω.  Earthing connection shall be kept short and as straight as possible because any loop or turns can create inductive elements that impede quick discharge of transients and surges to ground.
  62. 62. G.G.Tronics SSDACPrecautions to be taken for trouble free operation Earthing :  Earth resistance to be less than 2 ohms  If not archived by single earth provide multiple earth and parallel then
  63. 63. G.G.Tronics SSDACReset Box with LCD Display – Clear condition of track
  64. 64. G.G.Tronics SSDACReset Philosophy  Types of Reset  Co-operative Preparatory Reset with piloting for  2D and 3D-2S configurations  Direct Reset with line verification for  3D configuration  Reset Procedure  2D : System powered onReset ModePrep ModePilotingClear Mode  3D-2S: System powered onReset ModePrep ModePilotingClear Mode  3D : System powered on Reset ModeLVClear Mode
  65. 65. G.G.Tronics SSDACReset Philosophy  For Single line working one reset box is provided at the station associated with SF or EF unit of that track  In double line section each station will have two reset boxes corresponding to the two units of the SF/EF for UP/Down lines.  Normally co-operative reset with the running of the pilot train is accepted.  When direct reset is required, line verification for the clear condition is necessary.  Under special field conditions direct reset can be applied without line verification.  The reset potential has to be within the range of 36 to 52V.
  66. 66. G.G.Tronics SSDACReset Philosophy The system accepts reset under the following conditions:  Initial power ON.  When power fails & restores back when I/P voltage to the system fluctuates beyond limits.  The reset is applied to both the field units.  When there is an in count at the entry & at least one out count at the exit indicating the train has touched the end of block section.
  67. 67. G.G.Tronics SSDACReset Philosophy  The system will not accept reset under the following conditions:  When the section is clear.  When the system is waiting for pilot train.  When there is an in count but no out count is registered. (Occupied state)  When reset is given only from one station (not co-operative)  When the system is in permanent error status.  When reset is applied at one end & the other end does not reset within 5 minutes.  Removal of any of the PCB modules or fuses.  Disconnection / damage of axle detector of coils
  68. 68. G.G.Tronics SSDACReset Philosophy
  69. 69. G.G.Tronics SSDACInstallation Procedure  The installation can be taken up with the following parallel activities  Laying foundation as per Railway standards for fixing the location box  Trenching for running the required length of cable  Drilling of track for fixing TX/RX coils with the template  Fixing of TX/RX coils on the track  Laying of power cables, signalling cables and cables from TX/RX coils  Painting and fixing of required planks and fuse the terminal block  Digging Earth pit and getting ready the earthing arrangement  Checking for the compliance of pre commissioning check list  Placing the unit along with related PCB modules/cards and Display module  Connecting earth terminal of the unit chassis to the main chassis and on to the main earth through copper cables
  70. 70. G.G.Tronics SSDACInstallation Procedure Contd…  Placing Relay box adjacent to the unit  Fixing of the MS Coupler cable assemblies on to the designated mating Couplers on the rear panel of the system  Checking continuity and insulation resistance between cable pairs and also between the chassis and the cables  Connecting all the shields and the screen wires to the earth  Fixing of the reset box in a convenient location in the station  Connecting the wires coming from the system to the reset box  Connecting 24V DC to power supply  Connecting the power cables coming from the system to the source of power supply of 24V DC at the station, keeping the FTB connector open
  71. 71. G.G.Tronics SSDACMaintenance: Periodicity Maintenance Check for the proper voltage at the battery Weekly source for the unit Check and record the readings of Fortnightly 1. Power supply module 2. PD module 3. Check the coil Voltages Half yearly / Yearly Replace defective parts if any Power Supply/DC-DC Converter modules Every 5 Years must be replaced
  72. 72. G.G.Tronics SSDACBack Up Spares Required Sl.No SSDAC Spares Quantity 1 Phase Detector modules1&2 (PD1 and PD2) 2 2 CPU1 and CPU2 Modules 2 3 Communication Modules 2 4 Relay drive Module 1 5 Event Logger/SM-CPU Module 1 6 DC-DC converter Module 1 7 Axle detectors 21 KHz/25KHz (TX coil) 2 8 Axle detectors 21 KHz/ 25 KHz (RX coil) 2 9 Hardware for mounting axle detectors 1 10 MS circular connectors (6 No.) 1 11 Reset box RB 1 12 SSDAC unit (housing with mother board, without modules) 1 13 Relay Box 1
  73. 73. G.G.Tronics SSDACRecommended Tools Sl.No Tools Quantity PC/Laptop for downloading event logger data for 1 1 analysis and report generation Pure sine wave Digital Multimeter (Fluke make 187 2 1 or Rishab make 28S or similar 3 Train simulator 1 4 Extender module 1 5 Dummy wheel 1 6 Ring spanner 17-19,24-26 1 7 Open end spanner 17-19, 24-26 1 8 Socket spanner with handle 1 9 Torque wrench 1 10 Screw Driver No. 902 1 11 Screw Driver No. 935 1 12 Marking jig for drilling 1
  74. 74. G.G.Tronics SSDACDOs : Sl.No DO’s The interconnection drawings are to be followed for connecting the Transmitter and Receiver 1 Coils. Tx1 is 21 KHz, Tx2 is 25 KHz & Rx1 and RX2 coils are 21 KHz & 25 KHz, respectively 2 Ensure that Receiver and Transmitter coil cables are laid in different pipes. 3 Ensure that both the TX coils & RX coils are having proper alignment on Rail. 4 Ensure that packing of sleepers with ballast on both sides of Axle detector is proper 5 Check that metal sheaths of the outdoor cable are connected to earth at both ends 6 The recommended cables for wiring of the system at site should be used 7 The steady battery voltage 24 V should be maintained. 8 The cable connections should not be loose 9 The M.S Coupler connectors of SSDAC are checked and maintained firmly. 10 Preparatory Reset should be done only after ensuring that there is no train It is recommended that heat resisting paint to be used on the apparatus case so that the 11 temperature inside apparatus case is maintained lower in comparison to other normal paints
  75. 75. G.G.Tronics SSDACDONTs: Sl.No DON’Ts Don’t cut or join the Transmitter/Receiver cables supplied along with the coil. 1 It would result in change of levels of signals. Don’t remove the modules from SSDAC Units under POWER ON condition of system. 2 Remove module if necessary after switching OFF the power to the Unit. Local Address of the CPU-1 and CPU – 2 and configuration settings of the system 3 should not be changed at the field as far as possible. The hardware of Communication module and Relay Drive module are similar for all systems. However their positions of mounting is different in different unit types. 4 These modules have to be equipped correctly after verifying the drawings as mentioned in the installation manual (DRG-1 to DRG-4) which indicates their positions Caution Board has to be placed near the SSDAC Axle detectors to avoid damage to the 5 Coils from packing machines
  76. 76. G.G.Tronics SSDACTrouble Shooting:  For ease of maintenance in the field messages are provided in the Display Module both during healthy and Error conditions  About 61 possible conditions have been identified which drives the system into Error mode.  The errors are displayed in plain English on the Display Module  Further slides indicate the messages, their analysis and the corrective action to be taken
  77. 77. G.G.Tronics SSDACTrouble Shooting: Error Code on Errors Analysis Corrective measure display of CPU Error occurred due to missing of the Phase detector 1 Place the PD1 module in the 1 PD1_BOARD_MISSING module (PD1- 21KHz) during run time and boot slot and reset the time diagnosis. system Error occurred due to missing of the Phase detector 2 Place the PD1 module in the 2 PD2_BOARD_MISSING module (PD2- 25KHz) during run time and boot slot and reset the time diagnosis. system Place the SM-CPU module in Error occurred due to missing of the SM-CPU module 3 SM_CPU_MISSING the slot and reset the during run time and boot time diagnosis. system Error occurred due to missing of the Communication A Place the Communication A 4 MODEM_MODULE_A_MISSING module during run time and boot time module in the slot and diagnosis. reset the system Place the Communication B Error occurred due to missing of the Communication B 5 MODEM_MODULE_B_MISSING module in the slot and module during run time and boot time diagnosis reset the system Place the Relay Drive A Error occurred due to missing of the Relay Drive A 6 RELAY_DRIVE_A_MISSING module in the slot and module during run time and boot time diagnosis reset the system Place the Relay Drive B Error occurred due to missing of the Relay Drive B 7 RELAY_DRIVE_B_MISSING module in the slot and module during run time and boot time diagnosis reset the system
  78. 78. G.G.Tronics SSDACTrouble Shooting: Error occurred due to missing of the any one of Place the CPU module missing in 8 PEER_CPU_MISSING the CPU module during run time and the slot and reset the system boot time diagnosis Check the communication links (MS When EF CPU1 could not transmit to remote 9 COMM_LU1_TO_US1_FAILURE Coupler) and Reset the unit (CF or SF) CPU1 system Check the communication links (MS When EF CPU1 could not transmit to remote 10 COMM_LU1_TO_US2_FAILURE Coupler) and Reset the unit (SF or CF) CPU2 system Check the communication links (MS When SF CPU1 could not transmit to remote 11 COMM_LU1_TO_DS1_FAILURE Coupler) and Reset the unit (CF or EF) CPU1 system Check the communication links (MS When SF CPU1 could not transmit to remote 12 COMM_LU1_TO_DS2_FAILURE Coupler) and Reset the unit (CF or EF) CPU2 system Check the communication links (MS When EF CPU1 could not receive any response 13 COMM_US1_TO_LU1_FAILURE Coupler) and Reset the from the remote unit (SF or CF) CPU1 system Check the communication links (MS When EF CPU2 could not receive any response 14 COMM_US2_TO_LU1_FAILURE Coupler) and Reset the from the remote unit (SF or CF) CPU1 system Check the communication links (MS When SF CPU1 could not receive any response 15 COMM_DS1_TO_LU1_FAILURE Coupler) and Reset the from the remote unit (CF or EF) CPU1 system
  79. 79. G.G.Tronics SSDACTrouble Shooting: When SF CPU2 could not receive any Check the communication links 16 COMM_DS2_TO_LU1_FAILURE response from the remote unit (CF or (MS Coupler) and Reset EF) CPU1 the system Check the communication links When EF CPU2 could not transmit to remote 17 COMM_LU2_TO_US1_FAILURE (MS Coupler) and Reset unit (SF or CF) CPU1 the system Check the communication links When EF CPU2 could not transmit to remote 18 COMM_LU2_TO_US2_FAILURE (MS Coupler) and Reset unit (SF or CF) CPU2 the system Check the communication links When SF CPU2 could not transmit to remote 19 COMM_LU2_TO_DS1_FAILURE (MS Coupler) and Reset unit (CF or EF) CPU1 the system Check the communication links When SF CPU2 could not transmit to remote 20 COMM_LU2_TO_DS2_FAILURE (MS Coupler) and Reset unit (CF or EF) CPU2 the system When EF CPU1 could not receive any Check the communication links 21 COMM_US1_TO_LU2_FAILURE response from the remote unit (SF or (MS Coupler) and Reset CF) CPU2 the system When EF CPU2 could not receive any Check the communication links 22 COMM_US2_TO_LU2_FAILURE response from the remote unit (SF or (MS Coupler) and Reset CF) CPU2 the system When SF CPU1 could not receive any Check the communication links 23 COMM_DS1_TO_LU2_FAILURE response from the remote unit (CF or (MS Coupler) and Reset EF) CPU2 the system
  80. 80. G.G.Tronics SSDACTrouble Shooting: When SF CPU2 does not receive any Check the communication links (MS 24 COMM_DS2_TO_LU2_FAILURE response from the remote unit Coupler) and Reset the system (CF or EF) CPU2 Carrier signal is being blocked by 25 MODEM_ERROR_NO_CARRIER Replace the faulty module modem Error occurred due to missing or error Check for the error or presence of SM- in CPU/ SM-CPU module during CPU/CPU module in the system, 26 PEER_CPU_LINK_FAILURE run time and boot time rectify the error and reset the diagnosis system Check the error at remote unit, rectify 27 FAILURE_AT_DS Error at Down stream unit the error and reset the system Check the error at remote unit, rectify 28 FAILURE_AT_US Error at Up stream unit the error and reset the system PD1 module supervisory is low for 3 Check the PD1 module, coils and reset 33 PD1_SUP_LOW seconds and TX and RX coils is the system not connected properly PD2 module supervisory is low for 3 Check the PD2 module, coils and reset 34 PD2_SUP_LOW seconds and TX and RX coils the system not connected properly Error occurs when any one sensor is 35 PD1_PULSING Reset the system influenced two or more times. Error occurs when any one sensor is 36 PD2_PULSING Reset the system influenced two or more times. Error occurs when double sensor is 37 PD_STATE_MISSING Reset the system influence in the sequence
  81. 81. G.G.Tronics SSDACTrouble Shooting: If supervisory signals pulsates more than 38 PD_SUP_PULSATING Reset the system 4 times Error occurs when any state sequence is 39 PD_STATE_FAIL Reset the system missing Error occurs when both the PD modules 40 PD_NOT_SENSING doesn’t sense the wheel for more Reset the system than 3 times Check the connections of Preparatory No/Improper feedback from Preparatory A 41 PREPARATORY_RELAY_A_FAILURE relay A (PRA) and reset the relay system Check the connections of Preparatory No/Improper feedback from Preparatory B 42 PREPARATORY_RELAY_B_FAILURE relay B (PRB) and reset the relay system No/Improper feedback from Vital Relay A Check the connections of Vital relay A 43 VITAL_RELAY_A_FAILURE relay (VRA) and reset the system No/Improper feedback from Vital Relay B Check the connections of Vital relay B 44 VITAL_RELAY_B_FAILURE relay (VRB) and reset the system Without IN COUNT, OUT COUNT 45 DIRECT_OUT_COUNT Reset the system registered 49 TRANSIENT_POWER_FAILURE_DS1 Power failure at Down stream CPU1 Reset the system 50 TRANSIENT_POWER_FAILURE_DS2 Power failure at Down stream CPU2 Reset the system 51 TRANSIENT_POWER_FAILURE_US1 Power failure at Up stream CPU1 Reset the system 52 TRANSIENT_POWER_FAILURE_US2 Power failure at Up stream CPU2 Reset the system
  82. 82. G.G.Tronics SSDACTrouble Shooting: Change the address settings by using 57 INVALID_NETWORK_ADDRESS When CPU address range wrong LK10 to LK17 links and reset the system This is a Boot Up error. When CRC of Re-program the processor and code 58 INCORRECT_CODE_CRC the code mismatches with the memory checksum stored CRC Change the address and configuration When unit type and address of CPU is 59 INVALID_CONFIGURATION settings as per the requirement wrong and reset the system 60 INVALID_COUNTS Train with 10,000 wheels Reset the system This is an Boot up error when RAM 61 RAM_TEST_FAILED (In- built memory of Replace the Micro Controller Microcontroller) is failed
  83. 83. G.G.Tronics SSDAC

×