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GE Multilin 745 Communications Manual

Transformer protection system
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GE
Grid Solutions
GE Grid Solutions
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Tel: +1 905 927 7070 Fax: +1 905 927 5098
Internet:
http://www.gegridsolutions.com
Transformer Protection System
Communications Guide
745 revision: 5.2x
Manual Part Number: 1601-0162-A9
GE publication code: GEK-106636H
*1601-0162-A9
745
I I SO9001:2000

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Summary of Contents for GE Multilin 745

  • Page 1 Grid Solutions Transformer Protection System Communications Guide 745 revision: 5.2x Manual Part Number: 1601-0162-A9 GE publication code: GEK-106636H GE Grid Solutions 650 Markland Street Markham, Ontario I I SO9001:2000 Canada L6C 0M1 Tel: +1 905 927 7070 Fax: +1 905 927 5098 Internet: http://www.gegridsolutions.com...
  • Page 2 GE Multilin The contents of this manual are the property of GE Multilin This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin The content of this manual is for informational use only and is subject to change without notice.

  • Page 3: Table Of Contents

    EVICE PROFILE DOCUMENT ..................... 2 MPLEMENTATION TABLE DNP POINT LISTS ..........................4 ................4 INARY INPUT BINARY INPUT CHANGE ............4 INARY OUTPUT CONTROL RELAY OUTPUT BLOCK ............... 6 NALOG INPUT ANALOG INPUT CHANGE 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE toc–i...
  • Page 4 TABLE OF CONTENTS TOC–II 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

  • Page 5: Protocols

    RS232, RS422, RS485, fiber optics, etc. The 745 includes a front panel RS232 port and two rear terminal RS485 ports, one of which can also be configured as RS422. Data flow is half duplex in all configurations.
  • Page 6 The master device in any system must know the address of the slave device with which it is to communicate. The 745 will not act on a request from a master if the address in the request does not match the relay's slave address (unless the address is the broadcast address -- see below).

  • Page 7: Ge Multilin Modbus Implementation

    This includes RS232, RS422, RS485, fibre optics, etc. The 745 includes a front panel RS232 port and two rear terminal RS485 ports, one of which can be configured as a four-wire RS422 port. Modbus is a single-master / multiple-slave protocol suitable for a multi-drop configuration as provided by RS485/RS422 hardware.

  • Page 8: Data Frame Format And Data Rate

    One data frame of an asynchronous transmission to or from a GE Multilin 745 consists of 1 and data rate start bit, 8 data bits, and 1 stop bit. This produces a 10 bit data frame. The 745 can be configured to include an additional even or odd parity bit if required, producing an 11 bit data frame.

  • Page 9: Crc-16 Algorithm

    8. is j = 8? If No, go to 5; If Yes, go to 9. 9. i + 1 —> i 10. is i = N? If No, go to 3; If Yes, go to 11. 11. A —> CRC 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–3...

  • Page 10: Message Timing

    Since some PLC Modbus implementations only support one of function codes 03h and 04h, the 745 interpretation allows either code to be used for reading one or more consecutive setpoints or actual values. The data starting address determines the data type being read.

  • Page 11: Execute Operation

    Modbus implementation: Force single coil GE Multilin implementation: Execute operation This function allows the master to perform various operations in the 745. The two-byte value of FF00h must be sent after the operation code for the operation to be performed.

  • Page 12: Store Single Setpoint

    Data starting address (high, low) 11 00 data starting at address 1100 Data (high, low) 00 C8 data for address 1100 = 00C8 CRC (low, high) 8F F0 CRC computed by slave 2–6 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

  • Page 13: Store Multiple Setpoints

    This response will be returned if a GE Multilin device connected to the RS485 external device port of the 745 has failed to respond to the 745. Acknowledge The addressed slave device has accepted and is processing a long duration command.

  • Page 14: Reading The Event Recorder

    If the total number of trace triggers has increased, then new trace memory waveform captures have occurred. 2–8 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

  • Page 15: Accessing Data Via The User Map

    Accessing data via the The 745 has a powerful user map feature that allows a computer to access up to 120 non- user map consecutive registers (setpoints or actual values) by using one Modbus read message.
  • Page 16 C6 A4 CRC computed by master Slave response Example Description Slave address response message from slave 11 Function code read register values Byte count 6 registers values = 12 bytes of data 2–10 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

  • Page 17: Function Code Substitutions

    9B 40 CRC computed by slave Function code Most 745 supported Modbus commands can be performed via function codes 03h (or 04h), substitutions and 10h and special memory map addresses. Function codes 03h and 04h are interchangeable. Both have identical message formats, and both perform the same action.

  • Page 18: Modbus Memory Map

    CRC computed by slave Modbus memory map Memory map Data in the 745 that is accessible via computer communications is grouped into several organization sections of the memory map as shown in the table below. All memory map locations are two-byte (16-bit) values.
  • Page 19 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL 745 memory map The Modbus memory map for the 745 Transformer Protection System is shown below. All addresses are in hexadecimal format. Table 2–4: 745 memory map (Sheet 1 of 56) Addr Description Range...
  • Page 20 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 2 of 56) Addr Description Range Step Units Format Default 009C Virtual input 13 programmed state 009D Virtual input 14 programmed state 009E Virtual input 15 programmed state...
  • Page 21 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 3 of 56) Addr Description Range Step Units Format Default 011E User map value #31 011F User map value #32 0120 User map value #33 0121 User map value #34...
  • Page 22 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 4 of 56) Addr Description Range Step Units Format Default 014D User map value #78 014E User map value #79 014F User map value #80 0150 User map value #81...
  • Page 23 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 5 of 56) Addr Description Range Step Units Format Default User map addresses 0180 User map address #1 0000 to FFFF 0001 0000 hex 0181 User map address #2...
  • Page 24 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 6 of 56) Addr Description Range Step Units Format Default 01AE User map address #47 0000 to FFFF 0001 0000 hex 01AF User map address #48 0000 to FFFF...
  • Page 25 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 7 of 56) Addr Description Range Step Units Format Default 01DD User map address #94 0000 to FFFF 0001 0000 hex 01DE User map address #95 0000 to FFFF...
  • Page 26 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 8 of 56) Addr Description Range Step Units Format Default 020D Instantaneous differential flag 020E Winding 1 phase time overcurrent flag 020F Winding 2 phase time overcurrent flag...
  • Page 27 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 9 of 56) Addr Description Range Step Units Format Default 023A Frequency decay rate 4 flag 023B Overfrequency flag 023C Fifth harmonic level flag 023D Volts-per-hertz 1 flag...
  • Page 28 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 10 of 56) Addr Description Range Step Units Format Default 028B Winding 1 average phase current 028C Reserved 028D Reserved 028E Reserved 028F Reserved Winding 2 current 0290...
  • Page 29 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 11 of 56) Addr Description Range Step Units Format Default 02B7 Winding 1 negative-sequence current angle 0 to 359 ° Lag 02B8 Winding 2 negative-sequence current magnitude 02B9...
  • Page 30 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 12 of 56) Addr Description Range Step Units Format Default 02EF Reserved 3rd harmonic 02F0 Winding 1 phase A 3rd harmonic content 0.0 to 99.9 % ƒo 02F1 Winding 1 phase B 3rd harmonic content 0.0 to 99.9...
  • Page 31 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 13 of 56) Addr Description Range Step Units Format Default 0323 Winding 2 phase A 6th harmonic content 0.0 to 99.9 % ƒo 0324 Winding 2 phase B 6th harmonic content 0.0 to 99.9...
  • Page 32 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 14 of 56) Addr Description Range Step Units Format Default 0358 Winding 3 phase C 9th harmonic content 0.0 to 99.9 % ƒo 0359 Reserved 035A Reserved ↓...
  • Page 33 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 15 of 56) Addr Description Range Step Units Format Default 13th harmonic 0390 Winding 1 phase A 13th harmonic content 0.0 to 99.9 % ƒo 0391 Winding 1 phase B 13th harmonic content 0.0 to 99.9...
  • Page 34 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 16 of 56) Addr Description Range Step Units Format Default 03C5 Winding 2 phase C 16th harmonic content 0.0 to 99.9 % ƒo 03C6 Winding 3 phase A 16th harmonic content 0.0 to 99.9...
  • Page 35 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 17 of 56) Addr Description Range Step Units Format Default 03FA Reserved ↓ ↓ ↓ ↓ ↓ ↓ ↓ 03FF Reserved 20th harmonic 0400 Winding 1 phase A 20th harmonic content 0.0 to 99.9...
  • Page 36 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 18 of 56) Addr Description Range Step Units Format Default Harmonic derating 0430 Winding 1 harmonic derating factor 0.00 to 1.00 0.01 0431 Winding 2 harmonic derating factor 0.00 to 1.00...
  • Page 37 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 19 of 56) Addr Description Range Step Units Format Default 0469 Winding 3 maximum current demand 046A Winding 3 maximum current demand phase 0 = phase A 046B...
  • Page 38 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 20 of 56) Addr Description Range Step Units Format Default 04A2 Winding 1 reactive power .00001 to 32000 Mvar F156 04A4 Winding 1 apparent power .00001 to 32000...
  • Page 39 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 21 of 56) Addr Description Range Step Units Format Default 0817 Maximum event winding 2 ground current 0818 Maximum event winding 3 phase A current 0819 Maximum event winding 3 phase B current...
  • Page 40 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 22 of 56) Addr Description Range Step Units Format Default 0857 Event XX winding 3 ground current magnitude 0858 Event XX winding 3 ground current angle 0 to 359 °...
  • Page 41 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 23 of 56) Addr Description Range Step Units Format Default 100E COM2 parity 0 = None 100F Front port baud rate 5 = 19200 Bd 1010 Front port parity...

  • Page 42: Reserved Reserved

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 24 of 56) Addr Description Range Step Units Format Default 1059 Default message #29 (2 registers) 105B Default message #30 (2 registers) 105D Reserved 105E Reserved 105F Reserved...

  • Page 43: None

    CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 25 of 56) Addr Description Range Step Units Format Default 10FF Reserved Transformer 1100 Nominal frequency 50 to 60 60 Hz 1101 Phase sequence 0 = ABC 1102 Transformer type 3 = Y/d30°...

  • Page 44: None

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 26 of 56) Addr Description Range Step Units Format Default 1144 Winding 3 series three-phase resistance 0.001 to 50.000 0.001 ohms 2100 = 2.100 Ω 1145 Winding 1 Ground Input Selection...
  • Page 45 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 27 of 56) Addr Description Range Step Units Format Default 1187 FlexCurve A delay at 3.20 × pickup 0 to 65000 0 ms FlexCurve A delay at 3.30 × pickup...
  • Page 46 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 28 of 56) Addr Description Range Step Units Format Default 11B6 FlexCurve A delay at 15.5 × pickup 0 to 65000 0 ms FlexCurve A delay at 16.0 × pickup...
  • Page 47 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 29 of 56) Addr Description Range Step Units Format Default 11E4 FlexCurve B delay at 4.50 × pickup 0 to 65000 0 ms FlexCurve B delay at 4.60 × pickup...
  • Page 48 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 30 of 56) Addr Description Range Step Units Format Default 1212 FlexCurve C delay at 1.10 × pickup 0 to 65000 0 ms FlexCurve C delay at 1.20 × pickup...
  • Page 49 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 31 of 56) Addr Description Range Step Units Format Default 1241 FlexCurve C delay at 5.80 × pickup 0 to 65000 0 ms FlexCurve C delay at 5.90 × pickup...

  • Page 50: Disabled

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 32 of 56) Addr Description Range Step Units Format Default 1282 Average ambient temperature for January –50 to 125 °C 20°C 1283 Average ambient temperature for February –50 to 125 °C...
  • Page 51 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 33 of 56) Addr Description Range Step Units Format Default 12DF Analog output 4 function 0 = Disabled 12E0 Analog output 4 value 9 = W1 loading 12E1...

  • Page 52: Disabled

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 34 of 56) Addr Description Range Step Units Format Default 1357 Logic input 8 asserted state 1 = Closed 1358 Logic input 9 function 0 = Disabled 1359...
  • Page 53 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 35 of 56) Addr Description Range Step Units Format Default 13D5 Virtual input 3 name (9 registers) Virtual Input 3 13DE Virtual input 4 function 0 = Disabled...
  • Page 54 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 36 of 56) Addr Description Range Step Units Format Default Output relay 1 1480 Output relay 1 name (9 registers) Solid State Trip 1489 Output relay 1 operation...
  • Page 55 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 37 of 56) Addr Description Range Step Units Format Default 1579 Output relay 6 operation 0=self-resetting 157A Output relay 6 type 0 = Trip 157B Output relay 6 FlexLogic™ (20 registers)
  • Page 56 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 38 of 56) Addr Description Range Step Units Format Default 1D84 Timer 2 pickup delay 0.00 to 600.00 0.01 0.00 s 1D85 Timer 2 dropout delay 0.00 to 600.00 0.01...
  • Page 57 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 39 of 56) Addr Description Range Step Units Format Default 1E11 Force analog output 1 0 to 100 1E12 Force analog output 2 0 to 100 1E13 Force analog output 3...
  • Page 58 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 40 of 56) Addr Description Range Step Units Format Default 1E41 Fault winding 3 phase A current angle 0 to 359 ° Lag 330° Lag × CT 10 = 1.0 × CT...
  • Page 59 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 41 of 56) Addr Description Range Step Units Format Default 201C Reserved 201D Reserved 201E Reserved 201F Reserved Instantaneous differential 2020 Instantaneous differential function 1 = Enabled 2021...
  • Page 60 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 42 of 56) Addr Description Range Step Units Format Default 2067 Winding 3 harmonic derating correction 0 = Disabled 2068 Winding 3 phase time overcurrent relays 1 to 8...
  • Page 61 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 43 of 56) Addr Description Range Step Units Format Default 20B1 Winding 2 phase instantaneous overcurrent 2 target 1 = Latched 20B2 Winding 2 phase instantaneous overcurrent 2 pickup 0.05 to 20.00...
  • Page 62 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 44 of 56) Addr Description Range Step Units Format Default 20F4 Winding 3 neutral time overcurrent multiplier 0.00 to 100.00 0.01 100 = 1.00 20F5 Winding 3 neutral time overcurrent reset...
  • Page 63 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 45 of 56) Addr Description Range Step Units Format Default Winding 2 neutral instantaneous overcurrent 2 2140 Winding 2 neutral instantaneous overcurrent 2 function 0 = Disabled 2141...
  • Page 64 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 46 of 56) Addr Description Range Step Units Format Default 2182 Winding 3 ground time overcurrent pickup 0.05 to 20.00 0.01 x CT 85 = 0.85 x CT...
  • Page 65 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 47 of 56) Addr Description Range Step Units Format Default ↓ ↓ ↓ ↓ ↓ ↓ ↓ 21CF Reserved Winding 2 ground instantaneous overcurrent 2 21D0 Winding 2 ground instantaneous overcurrent 2 function...

  • Page 66: F36

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 48 of 56) Addr Description Range Step Units Format Default 2212 Winding 3 restricted ground fault pickup 0.02 to 20.00 0.01 × CT 8 = 0.08 × CT...
  • Page 67 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 49 of 56) Addr Description Range Step Units Format Default 2282 Winding 1 negative-sequence inst. overcurrent pickup 0.05 to 20.00 0.01 × CT 1000=10.00xCT 2283 Winding 1 negative-sequence inst. overcurrent delay...

  • Page 68: F87

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 50 of 56) Addr Description Range Step Units Format Default 22C6 Underfrequency 2 current sensing 1 = Enabled × VT 50 = 0.50 × VT 22C7 Underfrequency 2 minimum operating voltage 0.01 to 0.99...
  • Page 69 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 51 of 56) Addr Description Range Step Units Format Default Volts per hertz 1 2300 Volts-per-hertz 1 function 0 = Disabled 2301 Volts-per-hertz 1 target 0 = Self-reset...

  • Page 70: To 60000 1 Ms F1

    MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 52 of 56) Addr Description Range Step Units Format Default 233F Reserved Winding 3 THD level 2340 Winding 3 THD level function 0 = Disabled 2341 Winding 3 THD level target...
  • Page 71 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 53 of 56) Addr Description Range Step Units Format Default Hottest- spot limit 2380 Hottest-spot limit function 0 = Disabled 2381 Hottest-spot limit target 0 = Self-reset 2382...
  • Page 72 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 54 of 56) Addr Description Range Step Units Format Default 23CF Reserved Winding 2 current demand 23D0 Winding 2 current demand function 0 = Disabled 23D1 Winding 2 current demand target...
  • Page 73 CHAPTER 2: MODBUS PROTOCOL MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 55 of 56) Addr Description Range Step Units Format Default ↓ ↓ ↓ ↓ ↓ ↓ ↓ 3FFF Reserved Trace memory (addresses 4000 to 47FF, read only) 4000...
  • Page 74 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL Table 2–4: 745 memory map (Sheet 56 of 56) Addr Description Range Step Units Format Default 8165 Force analog output 6 D/A count 0 to 4095 8166 Force analog output 7 D/A count 0 to 4095...

  • Page 75: Memory Map

    Value Description Hardware revision A Hardware revision F Hardware revision B Hardware revision G Hardware revision C Hardware revision H Hardware revision D Hardware revision I Hardware revision E Hardware revision J 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–69...
  • Page 76 Harsh environment option F16: Demand interval response (16-bit enumeration) Value Demand interval 5 minutes 10 minutes 15 minutes 20 minutes 30 minutes 60 minutes F17: Communications hardware (16-bit enumeration) Value Communications port RS485 RS422 2–70 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 77 Third and fourth block of four bits (---- ---- ---- ---- 0000 0000 0000 0000): year, 1990 to 2089 in steps of 1. Note: if the date has never been set, then all bits will be set to 1. 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–71...
  • Page 78 Winding 2 restricted ground fault –––– 0000 0010 0000 Winding 3 restricted ground fault –––– 0000 0010 0001 Winding 1 restricted ground trend –––– 0000 0010 0010 Winding 2 restricted ground trend 2–72 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 79 –––– 0000 0100 1101 Logic input 12 –––– 0000 0100 1110 Logic input 13 –––– 0000 0100 1111 Logic input 14 –––– 0000 0101 0000 Logic input 15 –––– 0000 0101 0001 Logic input 16 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–73...
  • Page 80 –––– 0000 0111 1100 Manual trace trigger –––– 0000 0111 1101 Automatic trace trigger –––– 0000 0111 1110 Control power –––– 0000 0111 1111 Logic input power –––– 0000 1000 0000 Analog output power 2–74 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 81 0 to 1 mA 0 to 5 mA 4 to 20 mA 0 to 20 mA 0 to 10 mA F27: Phase sequence (16-bit enumeration) Value Output range ABC sequence ACB sequence 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–75...
  • Page 82 117 D/y330°/y330° correction) Y/y0°/d30° Y/d330°/d210° D/d240°/d240° 118 Y/z30°/z30° Y/y0°/d150° Y/d330°/d330° D/d240°/y30° 119 Y/y0°/y0° F29: 745 operation (16-bit enumeration) Value Operation state Not programmed Programmed F29: Enabled/disabled state (16-bit enumeration) Value State Disabled Enabled 2–76 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 83 FlexCurve™ A IEC curve B FlexCurve™ B IEC curve C FlexCurve™ C F37: Rated winding temperature rise (16-bit enumeration) Value Temperature rise 55°C (oil) 65°C (oil) 80°C (dry) 115°C (dry) 150°C (dry) 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–77...
  • Page 84 Factory service mode disabled –––– –––– –––– –1–– Factory service mode enabled –––– –––– –––– 0––– Communication port passcode access is read and write –––– –––– –––– 1––– Communication port passcode access is read only 2–78 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 85 Maximum event winding 3 Ib Winding 2 derating Maximum event winding 3 Ic Winding 3 derating Maximum event winding 3 Ig Frequency F46: Target types (16-bit enumeration) Value Target Self-reset Latched None 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–79...
  • Page 86 14-input gate –––– –––– 0000 1111 15-input gate –––– –––– 0001 0000 16-input gate –––– –––– 0001 0001 17-input gate –––– –––– 0001 0010 18-input gate –––– –––– 0001 0011 19-input gate 2–80 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 87 Winding 3 negative-sequence time overcurrent –––– –––– 0010 1010 Winding 1 negative-sequence instantaneous overcurrent –––– –––– 0010 1011 Winding 2 negative-sequence instantaneous overcurrent –––– –––– 0010 1100 Winding 3 negative-sequence instantaneous overcurrent 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–81...
  • Page 88 –––– –––– 0000 1101 Logic input 14 / virtual input 14 –––– –––– 0000 1110 Logic input 15 / virtual input 15 –––– –––– 0000 1111 Logic input 16 / virtual input 16 2–82 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 89 –––– –––– 0000 0111 Timer 8 operated –––– –––– 0000 1000 Timer 9 operated –––– –––– 0000 1001 Timer 10 operated F48: Simulation function (16-bit enumeration) Value Simulation Disabled Prefault mode Fault mode Playback mode 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–83...
  • Page 90 F51: DSP diagnostic flags (16-bit bitmask) Bitmask Diagnostic flag –––– –––– –––– –––x A/D virtual ground (0 = OK, 1 = out of tolerance) –––– –––– –––– ––x– A/D subsystem (0 = OK, 1 = not responding) 2–84 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 91 F55: Front panel keypress (16-bit enumeration) Value Value Value “0” “8” Enter “1” “9” Reset “2” Decimal Menu “3” Message up Escape “4” Message down Value down “5” Message left Help “6” Message right “7” Value up 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–85...
  • Page 92 Virtual output 3 (0 = not operated, 1 = operated) –––– –––– –––– x––– Virtual output 4 (0 = not operated, 1 = operated) –––– –––– –––x –––– Virtual output 5 (0 = not operated, 1 = operated) 2–86 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 93 Voltage Winding 1 Ic Winding 3 Ib Logic inputs Winding 2 Ia Winding 3 Ic Output relays Winding 2 Ib Winding 1/2 Ig F66: Output operation (16-bit enumeration) Value Operation Self-resetting Latched 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–87...
  • Page 94 –––– –––– –––– ––x– Not used –––– –––– –––– –x–– External watchdog (0 = normal, 1 = stop updating) –––– –––– –––– x––– Internal watchdog (0 = normal, 1 = stop updating) 2–88 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 95 For 200 A < winding 1 phase CT primary ≤ 2000 A, F78 is a standard unsigned value. For example, 1234 is stored as 1234. For winding 1 phase CT primary > 2000 A, F78 is a standard unsigned value scaled by 10. For example, 12340 is stored as 1234. 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–89...
  • Page 96 For 20 A < winding 3 ground CT primary ≤ 200 A, F83 is an unsigned value with one decimal place. For example, 123.4 is stored as 1234. For winding 3 ground CT primary > 200 A, F83 is a standard unsigned value. For example, 1234 is stored as 1234. 2–90 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 97 Virtual input 2 Virtual output 1 Virtual input 3 Virtual output 2 Virtual input 4 Virtual output 3 Virtual input 5 Virtual output 4 Virtual input 6 Virtual output 5 Virtual input 7 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–91...
  • Page 98 Low Voltage Winding Rating Low MVA Transfomer defined as less than: <1 kV 0.1 MVA 1 to 5 kV 1.0 MVA >5 kV 10.0 MVA 2–92 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 99 0.01234 stored as 1234 ≤ 2A<W3 4 decimal places 0.1234 stored as 1234 ≤ 20A<W3 200A 3 decimal place 1.234 stored as 1234 > 200A 2 decimal place 12.34 stored as 1234 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–93...
  • Page 100 For example, 123.4 is stored as 1234. For low voltage winding rating < 1 kV, format F101 is an unsigned value with two decimal places. For example, 12.34 is stored as 1234. 2–94 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 101 The first modbus address contains the sign bit, exponent, and 7 most significant bits of the fraction. The second modbus address contains the 16 least significant bits of the fraction. Reference: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4610935 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 2–95...
  • Page 102 MODBUS PROTOCOL CHAPTER 2: MODBUS PROTOCOL 2–96 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

  • Page 103: Device Profile Document

    Ë Never Ë Always Ë Sometimes Ë Configurable (note 1) Requires Application Layer Confirmation: Ë Never Ë Always Ë When reporting Event Data Ë When sending multi-fragment responses Ë Sometimes Ë Configurable 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 3–1...

  • Page 104: Implementation Table

    Table notes: The data link layer confirmation mode, confirmation timeout, and number of retries are all configurable. Refer to the 745 instruction manual for further details. Implementation table The following table gives a list of all objects recognized and returned by the relay.
  • Page 105 Object Description Default variation Binary input - single bit Binary input change with time Binary output status 16-bit analog input without flag 16-bit analog input change without time 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 3–3...

  • Page 106: Dnp Point Lists

    The Count field is checked first. If it is zero, the command will be accepted but no action will be taken. If this field is non-zero, the command will be executed exactly once regardless of its value. The Control code field of object 12 is then inspected: 3–4 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 107 Virtual Input 6 Virtual Input 7 Virtual Input 8 Virtual Input 9 Virtual Input 10 Virtual Input 11 Virtual Input 12 Virtual Input 13 Virtual Input 14 Virtual Input 15 Virtual Input 16 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 3–5...

  • Page 108: Analog Input / Analog Input Change

    5, 8 Winding 1 positive-sequence current magnitude Class 1 Winding 2 positive-sequence current magnitude Class 1 Winding 3 positive-sequence current magnitude Class 1 5, 8 Winding 1 negative-sequence current Class 1 magnitude 3–6 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...
  • Page 109 Class 1 Winding 3 real power Class 1 5, 8 Winding 3 reactive power Class 1 5, 8 Winding 3 apparent power Class 1 5, 8 Winding 3 power factor Class 1 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 3–7...
  • Page 110 For this reason, the data returned in a 32-bit variation is never sign-extended even if the source value is negative. Depending upon the configuration and/or programming of the 745, this value may not be available. Should this be the case, a value of zero will be returned.
  • Page 111 ................... 3-1 implementation table ..................3-2 point list table ....................3-4 user group website ................... 1-1 DNP MODBUS REGISTERS ................2-36 ELECTRICAL INTERFACE ................... 2-1 ENERGIZATION INHIBIT ................... 2-52 ENERGY METERING ..................2-32 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE index–i...

  • Page 112: Function Code

    ................... 2-2 description ......................2-1 error codes ......................2-7 exception responses ..................2-7 function code 03h ..................... 2-4 function code 04h ..................... 2-4 function code 05h ..................... 2-5 function code 06h ..................... 2-6 index–ii 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

  • Page 113: Function Code

    ..................... 2-1 RS485 INTERFACE ..................... 2-1 SCRATCHPAD ....................2-36 SETPOINTS reading ......................2-4 storing ......................2-6 SIMULATION ..................... 2-51 STORE MULTIPLE SETPOINTS ................2-7 STORE SINGLE SETPOINT ................. 2-6 SYSTEM STATUS ....................2-19 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE index–iii...
  • Page 114 ..................2-61 USER MAP ..................2-9, 2-14, 2-17 VIRTUAL INPUTS ..................2-13, 2-46 VIRTUAL OUTPUTS ................... 2-49 VOLTAGE INPUT ....................2-43 VOLTAGE METERING ..................2-30 VOLTS PER HERTZ .................... 2-63 WINDINGS ......................2-37 index–iv 745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE...

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