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BECKWITH ELECTRIC M-4272 Instruction Book

Motor bus transfer system
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M-4272 Motor Bus
Transfer System

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Summary of Contents for BECKWITH ELECTRIC M-4272

  • Page 1 Instruction Book Book 2 of 2 M-4272 Motor Bus Transfer System...
  • Page 2 SYNCHRONIZING Digital Motor Bus Transfer System M-4272 ® Integrated Synchronizing System • Provides Automatic and Manual transfers of motor bus systems in power plants and industrial processing plants to ensure process continuity • Automatically selects Fast, Delayed In-Phase, Residual Voltage, and Fixed Time motor bus transfers, based on varying system conditions •...
  • Page 3 M-4272 Digital Motor Bus Transfer System Standard Features Circuit Breaker Control: The digital Motor Bus Transfer System includes the following Circuit Breaker Automatic Transfer: The digital Motor Bus Transfer Control features: System (MBTS) provides the following Automatic • Control of two circuit breakers with two indi-...
  • Page 4 M-4272 Digital Motor Bus Transfer System The M-4272 Digital Motor Bus Transfer System provides Automatic and Manual Transfers. The Fast Transfer, Delayed In-Phase Transfer, and Residual Voltage Transfer methods are activated at the same time, if enabled. If the conditions for the Fast Transfer are not met, then the Delayed In-Phase Transfer or the Residual Voltage Transfer will be attempted.
  • Page 5 M-4272 Digital Motor Bus Transfer System closes either as a result of a subsequent movement into the delta phase angle limit within the Fast Transfer Time Window, a movement through a predicted zero phase coincidence within the Delayed In-Phase Transfer Time Window, or by a drop in the motor bus voltage below the Residual Voltage Transfer limit, or after the fixed time delay of the Fixed Time Transfer.
  • Page 6 M-4272 Digital Motor Bus Transfer System TRANSFER SETTINGS Setpoint † Ranges Increment Accuracy Automatic Transfer Fast Transfer Delta Phase Angle Limit* 0.0 to 90.0 Degrees 0.1 Degree 0.5 Degree Delta Voltage Limit 0 to 60 V 0.5 V or Delta Frequency Limit 0.02 to 2.00 Hz...
  • Page 7 M-4272 Digital Motor Bus Transfer System TRANSFER SETTINGS Setpoint Ranges Increment Accuracy † Manual Transfer Fast Transfer Delta Phase Angle Limit* 0.0 to 90.0 Degrees 0.1 Degree 0.5 Degree Delta Voltage Limit 0 to 60 V 0.5 V or Delta Frequency Limit 0.02 to 2.00 Hz...
  • Page 8 M-4272 Digital Motor Bus Transfer System TRANSFER SETTINGS Setpoint Ranges Increment Accuracy † Manual Transfer (cont.) Hot Parallel Transfer Delta Phase Angle Limit* 0.0 to 90.0 Degrees 0.1 Degree 0.5 Degree Delta Voltage Limit 0 to 60 V 0.5 V or Delta Frequency Limit 0.02 to 0.50 Hz...
  • Page 9 M-4272 Digital Motor Bus Transfer System TRANSFER SETTINGS Setpoint Ranges Increment Accuracy † Common Function Settings Common Function Settings Common Function Settings Common Function Settings Common Function Settings Upper Voltage Limit 5 to 180 V 0.5 V or New Source...
  • Page 10 Time Delay 1 to 30 Cycles 1 Cycle 1 Cycle 50BF-1 can be initiated from designated M-4272 output contacts or programmable inputs. * Value in parentheses apply to 1A Secondary Rating 50BF-2 Breaker Failure (Source 2) Pickup Current 0.10 to 10.00 A 0.01 A...
  • Page 11 M-4272 Digital Motor Bus Transfer System FUNCTIONS (Cont.) Setpoint Ranges Increment Accuracy † Source 1 Breaker Failure (Using breaker status) Time Delay 0 to 30 Cycles 1 Cycle 1 Cycle The breaker failure time delay is used to monitor breaker failure when using the breaker status inputs only.
  • Page 12 M-4272 Digital Motor Bus Transfer System FUNCTIONS (Cont.) Setpoint Ranges Increment Accuracy † Bus VT Fuse-Loss Detection Delta Pickup* 5 to 25 V .05 V or 60FL Time Delay** 1 to 8160 Cycles 1 Cycle 3 Cycles or 1%**** Blocking Drop Out...
  • Page 13 When untriggered, the recorder continuously stores waveform data, thereby keeping the most recent data in memory. When triggered, the recorder stores pre-trigger data, then continues to store data in memory for a user- defined, post-trigger delay period. The records may be analyzed using Beckwith Electric ISScom ®...
  • Page 14 VA at 120 V. Source voltage may be phase-to ground or phase-to-phase connected. For proper operation of M-4272 MBTS, the connections for the Source 1, Source 2 and Bus voltages must match each other. The unit may have up to three voltage inputs for each of the Source 1, Source 2, and Bus Voltages. Typical connection diagrams are illustrated in Figures 10 through 15.
  • Page 15 M-4272 Digital Motor Bus Transfer System Breaker Closing Time and Breaker Failure Monitoring The Breaker Closing Time Monitoring feature measures the breaker closing time each time a transfer occurs. If this time varies by more than a selectable breaker closing time deviation of the programmed time, an alarm is activated.
  • Page 16 HMI Module Local access to the M-4272 is provided through the M-3931 Human-Machine Interface (HMI) Module, allowing for easy-to-use, menu-driven access to all functions using a 6-pushbutton keyboard and a 2-line by 24 character alphanumeric display.
  • Page 17 M-4272 Digital Motor Bus Transfer System ® Figure 1 ISSLogic Function Diagram –16–...
  • Page 18 M-4272 Digital Motor Bus Transfer System Tests and Standards M-4272 Digital Motor Bus Transfer System complies with the following type tests and standards: Voltage Withstand Dielectric Withstand IEC 60255-5 3,500 V dc for 1 minute applied to each independent circuit to earth...
  • Page 19 Patent & Warranty The M-4272 Digital Motor Bus Transfer System has patents pending. The M-4272 Digital Motor Bus Transfer System is covered by a five year warranty from date of shipment. External Connections M-4272 external connection points are illustrated in Figure 5, External Connections.
  • Page 20 BUS-TIE STATION BUS SYSTEM BUS 1 BUS 2 CT-B1 CT-B2 N.O. THREE-BREAKER CONFIGURATION NOTE: Current Transformers are used for the M-4272, 50BF Function, they are not required for transfer operation. Figure 2 Typical Applications of Motor Bus Transfer Systems –19–...
  • Page 21 M-4272 Digital Motor Bus Transfer System Figure 3 Time Sequence of Transfer Logic in Sequential Transfer Mode –20–...
  • Page 22 M-4272 Digital Motor Bus Transfer System Figure 4 Time Sequence of Transfer Logic in Simultaneous Transfer Mode –21–...
  • Page 23 M-4272 Digital Motor Bus Transfer System –22–...
  • Page 24 M-4272 Digital Motor Bus Transfer System Figure 6 Horizontal Mounting Dimensions –23–...
  • Page 25 [17.83] 4.00 [10.16] 0.28 [0.71] (4X) RECOMMENDED CUTOUT 4 UNIT PANEL M-4272 TOLERANCE: .XX±.015 Figure 7 Panel Mount Cutout Dimensions BECKWITH ELECTRIC CO., INC. 6190 - 118th Avenue North • Largo, Florida 33773-3724 U.S.A. PHONE (727) 544-2326 • FAX (727) 546-0121 E-MAIL marketing@beckwithelectric.com...
  • Page 26 WARNING DANGEROUS VOLTAGES, capable of causing death or serious injury, are present on the external terminals and inside the equip- ment. Use extreme caution and follow all safety rules when han- dling, testing or adjusting the equipment. However, these internal voltage levels are no greater than the voltages applied to the exter- nal terminals.
  • Page 27 PRODUCT CAUTIONS Before attempting any test, calibration, or maintenance procedure, personnel must be completely familiar with the particular circuitry of this unit, and have an adequate understanding of field effect devices. If a component is found to be defective, always follow replacement procedures carefully to that assure safety features are maintained.
  • Page 28 Instruction Book Chapters Page Chapter 1 Introduction Instruction Book Contents ..............1–1 M-4272 Motor Bus Transfer System ............. 1–2 Application ..................1–4 Chapter 2 Operation Front Panel Controls and Indicators ..........2–1 Alphanumeric Display ................. 2–1 Screen Blanking ................. 2–1 Arrow Pushbuttons ................
  • Page 29 M-4272 Instruction Book Chapters - (cont'd) Page Chapter 2 Operation (cont'd) Clear Alarm Counters (MBTS Front Panel) ........2–10 Clear Error Codes (MBTS Front Panel) ........... 2–12 Status Monitoring and Metering ............2–12 System/Monitor/Primary Metering ............2–12 System/Monitor/Secondary Metering and Status ......2–12 System/Monitor/Phasor Diagram and Sync Scope ......
  • Page 30 Table of Contents Chapters - (cont'd) Page ® Chapter 3 ISScom (cont'd) System/Sequence of Events/Clear .............3–25 System/Oscillograph ................3–25 System/Oscillograph/Setup ..............3–27 System/Oscillograph/Retrieve ............3–27 System/Oscillograph/Trigger ..............3–28 System/Oscillograph/Clear ..............3–29 System/Profile ..................3–29 System/Profile/Switching Method ............3–29 System/Profile/Active Profile ............. 3–29 System/Profile/Copy Profile ...............3–30 System/Profile/Write File To System ..........
  • Page 31 M-4272 Instruction Book Chapters - (cont'd) Page Chapter 4 System Setup and Setpoints (cont'd) HMI Set Date and Time ............... 4–8 Communication Setup ................4–10 Serial Ports (RS-232) ................4–10 Serial Ports (RS-485) ................4–10 Direct Connection ................4–10 Device Address .................. 4–10 ISScom COM Port Definitions and System's Communication Address ..
  • Page 32 Table of Contents Chapters - (cont'd) Page Chapter 4 System Setup and Setpoints (cont'd) Common Settings/Auto Fast Transfer Ready Outputs ....4–41 Common Function Settings/Manual Fast Transfer/Hot Parallel Ready Outputs ..............4–41 Common Settings/Transfer Ready Outputs ........4–41 Common Settings/Transfer Completed Outputs ......4–43 Common Settings/Fast Transfer Load Shedding Outputs ....
  • Page 33 M-4272 Instruction Book Chapters - (cont'd) Page Chapter 4 System Setup and Setpoints (cont'd) Manual Transfer ................4–55 Manual Transfer Settings/External Control Inputs Configuration ... 4–55 Manual Transfer/Manual Transfer Block ......... 4–55 Manual Transfer/Manual Transfer Initiate ........4–57 Manual Transfer Save/Cancel ............4–57 Manual Transfer Settings/Fast Transfer Tab ........
  • Page 34 Table of Contents Chapters - (cont'd) Page Chapter 4 System Setup and Setpoints (cont'd) S1 BF Source 1 Breaker Failure (Breaker Status) ......4–73 S2 BF Source 2 Breaker Failure (Breaker Status) ......4–75 60FL Bus VT Fuse Loss ..............4–75 81 Bus Voltage Frequency ..............
  • Page 35 M-4272 Instruction Book Chapters - (cont'd) Page Chapter 6 Testing Power On Self Test ................6–2 Diagnostic Test Procedures .............. 6–3 Overview ....................6–3 Equipment Required ................6–3 Entering Relay Diagnostic Mode ............6–3 Output Relay Test (Output Relays 1–16 and 17) ......... 6–4 Input Test (Control/Status) Inputs 1-18 ..........
  • Page 36 1–8 M .............. Order of Possible Open Transition MBTS ........1–10 Chapter 2 M-4272 Front Panel ................2–3 Screen Message Menu Flow ............. 2–3 Main Menu Flow ................. 2–4 Initiate Manual Transfer Confirmation Screen ........2–7 Initiate Manual Transfer Command Sent Confirmation Screen ..2–7 Remote/Local Mode Dialog Screen ...........
  • Page 37 M-4272 Instruction Book Figures - (cont'd) Page Chapter 3 (cont'd) 3-11 MBTS Setpoints Dialog Screen ............3–8 3-12 Typical Setpoint Dialog Screen ............3–8 3-13 All Setpoints Table Dialog Screen (Partial) ........3–9 3-14 Configure Dialog Screen (Partial) ............ 3–10 3-15 Date/Time Dialog Screen ..............
  • Page 38 Table of Contents Figures - (cont'd) Page Chapter 3 (cont'd) 3-42 Retrieve Oscillograph Record Screen ..........3–28 3-43 Oscillograph Manual Trigger Command Confirmation Screen ..3–28 3-44 Trigger Oscillograph Recorder Command Sent Screen ....3–29 3-45 Clear Oscillograph Records Command Confirmation Screen ..3–29 3-46 Oscillograph Records Cleared Screen ..........
  • Page 39 M-4272 Instruction Book Figures - (cont'd) Page Chapter 4 (cont'd) Set Date/Time Dialog Screen ............4–8 System Communication Setup Dialog Screen ........ 4–11 Multiple Systems Addressing Using Communications-Line Splitter ... 4–12 COM Port Settings Warning Screen ..........4–12 4-10 COM Port Setting Verification Screen ..........4–13 4-11 COM Port Settings Sent Confirmation Screen .......
  • Page 40 Table of Contents Figures - (cont'd) Page Chapter 4 (cont'd) 4-37 External Status Input Selection Dialog Screen ......4–40 4-38 Common Function Settings Outputs Dialog Screen ....... 4–42 4-39 Auto Fast Transfer Ready Output Selection Dialog Screen ..4–42 4-40 Manual Fast Transfer/Hot Parallel Ready Output Selection Dialog Screen ...................
  • Page 41 M-4272 Instruction Book Figures - (cont'd) Page Chapter 4 (cont'd) 4-63 Manual Transfer Settings Hot Parallel Transfer Tab Dialog Screen ............. 4–64 4-64 Hot Parallel Blocking Inputs Selection Dialog Screen ....4–64 4-65 Automatic Trip Settings Dialog Screen ........... 4–66 4-66 Main-Tie-Main Application Example ..........
  • Page 42 Single-Phase, Phase-Phase VT Three-Line Connection Diagram .. 5–10 5-10 Single-Phase, Source Side, Phase-Ground, Three-Phase Bus Side, Wye-Wye Three-Line Connection Diagram ........5–11 5-11 Single-Phase, Source Side, Phase-Phase, Three Phase Bus Side, Open Three-Line Connection Diagram ..........5–12 5-12 M-4272 Bottom Circuit Board (B-0970) ........... 5–16...
  • Page 43 M-4272 Instruction Book Figures - (cont'd) Page Chapter 5 (cont'd) 5-13 M-4272 B-0957 Top Circuit Board ........... 5–17 5-14 ISScom Program Icon ..............5–18 Chapter 6 Power Supply Connection ..............6–2 MBTS Trip Coil-Close Coil Input Voltage Rating ......6–7 Status LED Panel ................

  • Page 44: Table Of Contents

    Table of Contents Tables Page Chapter 1 M-4272 Transfer Functions ..............1–2 M-4272 Device Functions ..............1–2 Chapter 2 Breaker Status LED Input Configurations ......... 2–2 Chapter 3 ISSplot Shortcut Keys ..............3–38 Chapter 4 Dead-Sync Time ................4–11 Recorder Partitions ................4–20 Chapter 5 Jumpers ....................
  • Page 45 M-4272 Instruction Book This Page Left Intentionally Blank xviii...
  • Page 46 Chapter 6, Testing. panel drawings and station DC wiring schematics. If during the commissioning of the M-4272 Digital Motor Bus Transfer System, additional tests are desired, Chapter 6, Testing, may be consulted.
  • Page 47 M-4272 Instruction Book Mechanical/Physical Dimensions Figure 5-1 contains the physical dimensions of the MBTS that may be required for mounting the unit on a rack. Figure 5-2 provides panel mounting dimensions. Figure 5-1 Mechanical/Physical Dimensions 5–2...
  • Page 48 Installation – 5 18.34 [46.6] 17.68 [.84] [44.91] 1.51 [3.84] 7.02 [17.83] 4.00 [10.16] 0.28 [0.71] (4X) RECOMMENDED CUTOUT 4 UNIT PANEL M-4272 TOLERANCE: .XX±.015 Figure 5-2 Panel Mount Cutout Dimensions 5–3...
  • Page 49 M-4272 Instruction Book Grounding Requirements External Connections The M-4272 is designed to be mounted in an adequately grounded metal panel, using grounding 8 WARNING: The protective grounding terminal techniques (metal-to-metal mounting) and hardware must be connected to an earthed ground anytime that assures a low impedance ground.
  • Page 50 Installation – 5 5–5...
  • Page 51 M-4272 Instruction Book SOURCE 1 (S1) SOURCE 2 (S2) CT-S2 Single Phase CT CT-S1 Single Phase CT M-4272 M-4272 VT-S1 Three VT Wye-Wye Connection VT-S2 Three VT Wye-Wye Connection M-4272 M-4272 VT-B Three VT Wye-Wye Connection M-4272 52S1 52S2 STATION BUS SYSTEM...
  • Page 52 Installation – 5 SOURCE 1 (S1) SOURCE 2 (S2) CT-S1 Single Phase CT CT-S2 Single Phase CT M-4272 M-4272 VT-S1 Three VT Wye-Wye VT-S2 Three VT Wye-Wye Alternate Connection Alternate Connection M-4272 M-4272 VT-B Three VT Wye-Wye Alternate Connection M-4272...
  • Page 53 M-4272 Instruction Book SOURCE 1 (S1) SOURCE 2 (S2) CT-S2 Single Phase CT CT-S1 Single Phase CT M-4272 M-4272 VT-S1 Two VT Open-Delta Connection VT-S2 Two VT Open-Delta Connection M-4272 M-4272 VT-B Two VT Open-Delta Connection M-4272 52S1 52S2 STATION BUS SYSTEM...
  • Page 54 Installation – 5 SOURCE S1 (S1) SOURCE 2 (S2) CT-S2 Single Phase CT CT-S1 Single Phase CT M-4272 M-4272 VT-S2 One VT VT-S1 One VT Phase-Ground Phase-Ground Connection Connection M-4272 M-4272 VT-B One VT Phase-Ground Connection M-4272 52S1 52S2 STATION BUS SYSTEM...
  • Page 55 M-4272 Instruction Book SOURCE 1 (S1) SOURCE 2 (S2) CT-S1 Single Phase CT CT-S2 Single Phase CT M-4272 M-4272 VT-S2 One VT VT-S1 One VT Phase-Phase Phase-Phase Connection Connection M-4272 M-4272 VT-B One VT Phase-Phase Connection M-4272 52S1 52S2 STATION BUS SYSTEM...
  • Page 56 Installation – 5 SOURCE 1 (S1) SOURCE 2 (S2) CT-S1 Single Phase CT CT-S2 Single Phase CT M-4272 M-4272 VT-S2 One VT VT-S1 One VT Phase-Ground Phase-Ground Connection Connection M-4272 M-4272 VT-B Three VT Wye-Wye Connection M-4272 52S1 52S2 STATION BUS SYSTEM...
  • Page 57 M-4272 Instruction Book SOURCE 1 (S1) SOURCE 2(S2) CT-S1 Single Phase CT CT-M2 Single Phase CT M-4272 M-4272 VT-S2 One VT VT-S1 One VT Phase-Phase Phase-Phase Connection Connection M-4272 M-4272 VT-B Two VT Open-Delta Connection M-4272 52S1 52S2 STATION BUS SYSTEM...

  • Page 58: Jumpers

    Jumpers J5, J18, J46, J60, and J61 are now accessible on the bottom board Accessing Switches and Jumpers (B-0970). See Figure 5-12, M-4272 Bottom 8 WARNING: Operating personnel must not Circuit Board (B-0970) for locations. remove the cover or expose the printed circuit Jumpers J1, J2, J3, J4, J5, J6, J13, J14, board while power is applied.

  • Page 59: Dip Switch Sw1

    M-4272 Instruction Book Dip Switch SW1 Switches should not be changed Open while unit is energised (up) Closed (down) 3 up 4 up Run Mode 3 up 4 down Initialize EEPROM to default* See CAUTION below. 3 down 4 up...

  • Page 60: Close Circuit Monitor 1 Input Voltage Select Jumper Configuration

    Installation – 5 CLOSE CIRCUIT MONITOR 1 INPUT VOLTAGE SELECT INPUT JUMPER J4 JUMPER J5 JUMPER J6 VOLTAGE POSITION POSITION POSITION 24 V dc A to B A to B A to B 48 V dc B to C A to B A to B 125 V dc B to C...
  • Page 61 M-4272 Instruction Book 5–16...
  • Page 62 Installation – 5 5–17...
  • Page 63 M-4272 Instruction Book ® ISScom Communications Activating Initial Local and Analysis Software Communications Installation The MBTS and ISScom Communications and Analysis Software are shipped from the factory with ISScom Installation and Setup the same default communication parameters. ® ISScom runs with the Microsoft Windows Therefore, it may not be necessary to set up operating system or later.
  • Page 64 Installation – 5 If ISScom ® returns an error message, Press ENTER. The MBTS will then determine the MBTS COM1 display: communication parameters as follows: COM1 STOP BITS From the MBTS Front Panel HMI press ENTER. The MBTS will display: Record the Stop Bits value that is displayed: __________ INIT TRANSFER...
  • Page 65 M-4272 Instruction Book Select System/Monitor/Secondary Pre-Commissioning Metering and Status to open the Checkout Secondary Metering and Status screen. The Voltage, Positive Sequence and Status information is also available from During field commissioning, check the following the MBTS Front Panel HMI.
  • Page 66 Installation – 5 Initial Setup Procedure The M-4272 Motor Bus Transfer System (MTBS) is shipped from the factory with all functions disabled. The Setup Procedure provided below is a suggested setup procedure for initially entering settings into the device. Setup Procedure ■...
  • Page 67 M-4272 Instruction Book This Page Left Intentionally Blank 5–22...
  • Page 68 Testing – 6 Testing Power On Self Test ..............6–2 Diagnostic Test Procedures ............6–3 Metering Tests ................6-13 Auto Calibration ................ 6–14 6–1...

  • Page 69: Power On Self Test

    For the purposes of site acceptance and verifying proceed as follows: the MBTS hardware is operating properly and is connected correctly, Beckwith Electric recommends Ensure that the permanent power supply the following tests: source breaker is open and applicable safety tagging is complete.

  • Page 70: Diagnostic Test Procedures

    Testing – 6 Equipment Required BREAKER CLOSED BREAKER OPEN LEDs will be • If the MBTS permanent power supply illuminated for Source 1 based on the source is not available, then a portable position of the breaker position contacts power supply (>50 W) matched to the (52a and/or 52b) connected to the installed MBTS power supply (indicated Status Inputs 1, 2, 4 and 5.

  • Page 71: Output Contacts

    M-4272 Instruction Book 8 WARNING: Do not enter DIAGNOSTIC MODE Ensure that the Diagnostic Menu is selected to OUTPUT (Upper Case). when protected equipment is in service. Entering DIAGNOSTIC MODE when protected equipment OUTPUT TEST (RELAY) is in service disables all Transfer, protective, OUTPUT input led module and control functions of the relay.
  • Page 72 Testing – 6 Press ENTER. The following will be Ensure that the Diagnostic Menu is displayed for the selected relay: selected to INPUT (Upper Case). RELAY NUMBER 1 INPUT TEST (RELAY) OFF on output INPUT led module button disp com1 com2 com3 clock Select ON (Upper Case) utilizing the led cal factory Right arrow pushbutton, then press...

  • Page 73: Input Contacts

    M-4272 Instruction Book If testing all inputs, press EXIT to return Input Test (Trip Coil, Close Coil) Inputs 19–22 to the input selection menu, then repeat The INPUT TEST menu enables the user to Steps 5, 6, 7 and 8 for each input determine the status of the individual Trip and/or except inputs 19–22.
  • Page 74 Testing – 6 Connect the portable power supply to If all Diagnostic Testing is complete, the Trip Coil and/or Close Coil voltage then exit the diagnostic menu by pressing input terminals to be tested (Figure 6-2). EXIT, PRESS EXIT EXIT DIAGNOSTIC MODE is displayed, then If the MBTS is already in the Diagnostic press EXIT a second time.
  • Page 75 M-4272 Instruction Book If testing all MODULE LEDs, press the right arrow pushbutton to toggle through the remaining MODULE LEDs illustrated in Figure 6-4. When Module LED testing is complete press EXIT to return to the Diagnostic Menu. If all Diagnostic Testing is complete,...
  • Page 76 ARROW”, etc). to select DISP. Press ENTER, the unit will display a sequence of test characters until EXIT is pushed. BECKWITH ELECTRIC CO. After the test has cycled through M-4272 completely, press EXIT to return to the Diagnostic Menu. If all Diagnostic Testing is complete,...
  • Page 77 M-4272 Instruction Book COM1/COM2 Loopback Test Press ENTER. The following is displayed: The COM1 LOOPBACK TEST menu allows the COM1 LOOPBACK TEST user to test the front-panel RS-232 port. COM2 CONNECT LOOPBACK PLUG LOOPBACK TEST menu tests the rear panel RS-232 port.
  • Page 78 Testing – 6 COM3 Test (2-Wire) RS-485 The COM3 Echo Test 2-Wire allows the user to test RS-232 the RS-485 rear terminal connections for proper RS-232 to RS-485 operation. converter or PC card (2 wire) ■ ■ ■ ■ ■ NOTE: This test requires a PC with an RS-485 converter and terminal emulator software installed.
  • Page 79 M-4272 Instruction Book Clock ON/OFF If the clock was NOT running the following will be displayed: This feature provides the user with the ability to CLOCK TEST either start or stop the clock. CLOCK START If the MBTS is already in the Diagnostic Mode, then go to Step 2.

  • Page 80: Metering Tests

    Testing – 6 Press ENTER, the following will be Connect the temporary voltage source displayed: as follows: FLASH SYS OK LED If permanent voltage input connections OFF on are present, then disconnect and tag/ identify the permanent voltage input connections (Figure 6-8). Select (upper case) either ON (to flash) or OFF (to Illuminate) by pressing the Connect the temporary voltage source...

  • Page 81: Auto Calibration

    The calibration can be verified by exiting from the Auto Calibration Diagnostic menu and reading status: = 120 V ■ NOTE: The M-4272 Motor Bus Transfer System has been fully calibrated at the factory. = 5 A* There is no need to recalibrate the unit * For a 1 A CT rating, use 1.00 A...
  • Page 82 Testing – 6 Voltage Input Neutral Voltage Input Neutral Voltage Input Neutral Figure 6-8 Metering Voltage Input Configuration Current Input S1 Current Input S2 Figure 6-9 Metering Current Input Configuration 6–15...
  • Page 83 M-4272 Instruction Book This Page Left Intentionally Blank 6–16...
  • Page 84 Configuration Record Forms This Appendix contains photocopy–ready forms for Figure A-2, Setup System Record Form reproduces recording the configuration and setting of the M-4272 the Setup System menus. For each function or Motor Bus Transfer System (MBTS). The forms setpoint, refer to the configuration you have defined...

  • Page 85: Dead-Sync Time

    M-4272 Instruction Book System Communication Setup Communication Setup COM 1 Dead Sync Time _____ 2 msec – 3000 msecs o 1200 o 2400 o 4800 o 9600 Baud Rate o None o Odd o Even Parity Stop Bits System's Communication Address _____ COM 2 Dead Sync Time _____ 2 msec –...
  • Page 86 Appendix – A Setup System 0 Nominal Voltage _____ 50V-140V Nominal Current _____ 0.50A-6.00A Phase Rotation oABC oACB S1/S2 VT Configuration o Phase to Ground (Three Phase) o Phase to Phase (Three Phase) o Phase to Ground (Single Phase A) o Phase to Phase (Single Phase A) o Phase to Ground (Single Phase B) o Phase to Phase (Single Phase B)
  • Page 87 M-4272 Instruction Book System Setpoints Transfer Settings Transfer Settings CS – Common Settings Common Function Settings Transfer Mode o Simultaneous o Sequential Upper Voltage Limit New Source: _____ 5V – 180V Lower Voltage Limit New Source: _____ 5V – 180V...
  • Page 88 Appendix – A System Setpoints Transfer Settings (cont'd) Transfer Settings CS – Common Settings External Control Inputs Configuration (cont'd) Transfer Block #3 o #7 o #8 o #9 o #10 o #11 o #12 o #13 o #14 o #15 o #16 o #17 o #18...
  • Page 89 M-4272 Instruction Book System Setpoints Transfer Settings (cont'd) Transfer Settings ATS – Automatic Transfer Settings Setup Auto Transfer o Enable o Disable Both S1 & S2 Breakers Open o Block Transfer o Auto Close External Control Inputs Configuration Auto Transfer Block...
  • Page 90 Appendix – A System Setpoints Transfer Settings (cont'd) Transfer Settings ATS – Automatic Transfer Settings (cont'd) Fast Transfer Delta Phase Angle Limit _____ 0.0 Degrees – 90.0 Degrees Delta Voltage Limit _____ 0V – 60V o Disable o Enable Delta Freq. Limit _____ 0.02Hz –...
  • Page 91 M-4272 Instruction Book System Setpoints Transfer Settings (cont'd) Transfer Settings MTS – Manual Transfer Settings Setup Manual Transfer o Disable o Enable External Control Inputs Configuration Manual Transfer Block o #7 o #8 o #9 o #10 o #11 o #12...
  • Page 92 Appendix – A System Setpoints Transfer Settings (cont'd) Transfer Settings MTS – Manual Transfer Settings (cont'd) Delayed In-Phase Transfer Delta Voltage Limit _____ 0V – 120V o Enable o Disable Delta Freq. Limit _____ 0.10Hz – 10.00Hz Time Window _____ 10 Cycles –...
  • Page 93 M-4272 Instruction Book System Setpoints Transfer Settings (cont'd) Transfer Settings AT – Auto Trip Breaker Trip Option o Trip Originally Closed Breaker o Trip Breaker Just Closed Tripping Command Time Delay _____ 0 Cycles – 50 Cycles Blocking Inputs Selection...
  • Page 94 Appendix – A System Setpoints Function Settings Function Settings 27B – Bus Phase Undervoltage Bus Phase Undervoltage Transfer Initiate (S1 to S2) 27B #1 Pickup _____ 5V – 120V o Disable o Enable Voltage Inhibit _____ 5V – 120V Time Delay _____ 1 Cycle –...
  • Page 95 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings 27B – Bus Phase Undervoltage (cont'd) 27B #3 Pickup _____ 5V – 120V o Disable o Enable Voltage Inhibit _____ 5V – 120V Time Delay _____ 1 Cycle – 8160 Cycles...
  • Page 96 Appendix – A System Setpoints Function Settings (cont'd) Function Settings 50BF #1 – Source 1 Breaker Failure Source 1 Breaker Failure 50BF #1 Pickup Current _____ 0.02A – 2.00A Time Delay _____ 1 Cycle – 30 Cycles I/O Selection Outputs o #3 o #5 o #6...
  • Page 97 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings S1 BF – Source 1 Breaker Failure (Breaker Status) Source 1 Breaker Failure (Using Breaker Status) S1BF Time Delay _____ 0 Cycles – 30 Cycles I/O Selection Outputs o #3...
  • Page 98 Appendix – A System Setpoints Function Settings (cont'd) Function Settings 81 – Bus Voltage Frequency Bus Voltage Frequency 81 #1 Pickup _____ 50.00Hz – 67.00Hz (40.00 Hz – 57.00 Hz, 50 Hz) Time Delay _____ 5 Cycles – 65500 Cycles I/O Selection Outputs o #5...
  • Page 99 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings TCM – Trip Circuit Monitor Trip Circuit Monitor TCM #1 (Source 1 Breaker) Time Delay _____ 1 Cycle – 8160 Cycles Dropout Time Delay _____ 1 Cycle – 8160 Cycles...
  • Page 100 Appendix – A System Setpoints Function Settings (cont'd) Function Settings 60FL – Bus VT Fuse-Loss Bus VT Fuse-Loss 60FL Delta Voltage Pickup _____ 5V – 25V Time Delay _____ 1 Cycle – 8160 Cycles Blocking Drop Out Time Delay _____ 1 Cycle –...
  • Page 101 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings 50BF #2 – Source 2 Breaker Failure Source 2 Breaker Failure 50BF #2 Pickup Current _____ 0.10A – 10.00A Time Delay _____ 1 Cycle – 30 Cycles I/O Selection Outputs...
  • Page 102 Appendix – A System Setpoints Function Settings (cont'd) Function Settings S2 BF – Source 2 Breaker Failure (Breaker Status) Source 2 Breaker Failure (Using Breaker Status) S2 BF Time Delay _____ 0 Cycles – 30 Cycles I/O Selection Outputs o #1 o #5 o #6 o #7...
  • Page 103 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings 81R – ROCOF (Bus Voltage) 81R #1 Pickup _____ 0.10 Hz/Sec – 20.00Hz/Sec Time Delay _____ 3 Cycles – 8160 Cycles Neg. Sequence Voltage Inhibit _____ 0% – 99% o Enable...
  • Page 104 Appendix – A System Setpoints Function Settings (cont'd) Function Settings CCM – Close Circuit Monitor Close Circuit Monitor CCM #1 (Source 1 Breaker) Time Delay _____ 1 Cycle – 8160 Cycles Dropout Time Delay _____ 1 Cycle – 300 Cycles I/O Selection Outputs o #5...
  • Page 105 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings ISSL – ISSLogic ISSLogic ISSL #1 Initiating Outputs (1-16) o #1 o #2 o #3 o #4 o #5 o #6 o #7 o #8 o #9 o #10 o #11 o #12 o #13 o #14 o #15 o #16...
  • Page 106 Appendix – A System Setpoints Function Settings (cont'd) Function Settings ISSL – ISSLogic (cont'd) Initiating System Status o Auto Fast Transfer Delta Phase Angle OK o Manual Fast/Hot Parallel Transfer Delta Phase Angle OK o Auto Fast Transfer Delta Voltage OK o Manual Fast/Hot Parallel Transfer Delta Voltage OK o Auto Fast Transfer Delta Frequency OK o Manual Fast/Hot Parallel Transfer Delta Frequency OK...
  • Page 107 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings ISSL – ISSLogic (cont'd) o Initiate via Communication Port Initiating Inputs (1-18) o #1(S1 52a) o #2(S1 52b) o #3(S1 52SP) o #4(S2 52a) o #5(S2 52b) o #6(S2 52SP) o #7 [86P-S1 Initiate (S1 to S2)]...
  • Page 108 Appendix – A System Setpoints Function Settings (cont'd) Function Settings ISSL – ISSLogic (cont'd) Block System Status o Auto Fast Transfer Delta Phase Angle OK o Manual Fast/Hot Parallel Transfer Delta Phase Angle OK o Auto Fast Transfer Delta Voltage OK o Manual Fast/Hot Parallel Transfer Delta Voltage OK o Auto Fast Transfer Delta Frequency OK o Manual Fast/Hot Parallel Transfer Delta Frequency OK...
  • Page 109 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings ISSL – ISSLogic (cont'd) o Block via Communication Port Delay _____ 0 Cycles – 65500 Cycles Profile Switch o Not Activated o #1 o #2 o #3 o #4 DO/RST Delay _____ 0 Cycles –...
  • Page 110 Appendix – A System Setpoints Function Settings (cont'd) Function Settings 50S1 #1 – Source 1 Instantaneous Phase Overload Detection Source 1 Source 1 Instantaneous Phase Overload Detection 50S1 #1 Pickup Current _____ 1.0A – 100.0A Time Delay _____ 1 Cycle – 8160 Cycles I/O Selection Outputs o #5...
  • Page 111 M-4272 Instruction Book System Setpoints Function Settings (cont'd) Function Settings 50S2 #1 – Source 2 Instantaneous Phase Overload Detection Source 2 Instantaneous Phase Overload Detection 50S2 #1 Pickup Current _____ 1.0A – 100.0A Time Delay _____ 1 Cycle – 8160 Cycles...
  • Page 112 Appendix – A OUTPUTS BLOCKING INPUTS Function 50BF #1 50BF #2 50S1 #1 50S1 #2 50S2 #1 50S2 #2 S1 BF S2 BF 60 FL ISSL ✓ (See page A-1 for information regarding the use of this table.) Check each box applicable : D Column = Function Disabled.
  • Page 113 M-4272 Instruction Book This Page Left Intentionally Blank A–30...
  • Page 114 Optional Ethernet Port used to fulfill the following communications functions: The M-4272, when equipped with the optional Ethernet • Real time monitoring of line status. port can be accessed from a local network. When the ethernet port is enabled, the COM2 serial port •...

  • Page 115: Communication Port Signals

    M-4272 Instruction Book Signal COM1 COM2 Receive Data Pin 2 Pin 2 Transmit Data Pin 3 Pin 3 Request to Send Pin 7 Pin 7 Clear to Send Pin 8 Data Terminal Ready Pin 4 Pin 4 Data Carrier Detect...
  • Page 116 Communications: Appendix – B PC Master Echo Cancel On 25 pin or 9-25 pin Straight-Through Cable DYMEC Fiber Optic Link / Repeater D C E D T E Slave #1 Slave #2 Slave #3 Address 2 Address 3 Address 1 RS-232 RS-232 RS-232...
  • Page 117 M-4272 Instruction Book RS-485 2-Wire Network Slave #3 Slave #1 Slave #2 Address 1 Address 6 Address 8 PC Master 200 Ω* B(-) A(+) Twisted RS-232 to RS-485 2-wire converter or RS-485 PC Card ▲ ▲ ▲ ▲ ▲ CAUTION: Due to the possibility of ground potential difference between units, all units should be mounted in the same rack.

  • Page 118: Self-Test Error Codes Appendix - C

    Self-Test Error Codes Appendix – C Appendix C–Self-Test Error Codes Battery backed RAM test fail EEPROM write power-up fail EEPROM read back power-up fail Dual port RAM test fail EEPROM write calibration checksum fail EEPROM write setpoint checksum fail loss of power EEPROM write setpoint checksum fail loss of battery backed RAM DMA checksum/physical block fail Oscillograph Memory Test fail...
  • Page 119 M-4272 Instruction Book External DSP RAM test fail Unrecognized INT1 code Values update watchdog fail Restart Error Interrupt Error Trap Error Calibration running check fail Ethernet Board not running (Warning) Interrupt noise INT2 Oscillograph buffer overflow Oscillograph buffer underflow Failure of DSP to calculate calibration phasors...

  • Page 120: Error Messages

    Illegal Data Address This error results if an incompatible version of ISScom software is used. This is a communication protocol error. Contact a Beckwith Electric Co. factory representative. Invalid CRC This error results if there are problems with the communication link or if the echo cancel function is used incorrectly.
  • Page 121 M-4272 Instruction Book This Page Left Intentionally Blank C–4...
  • Page 122 Appendix – D Appendix D – Transfer Event Log Samples ® This Appendix contains Illustrations of the print-ready screens provided by the ISScom Transfer Event Log Print Summary and Print Detail features. D–1...
  • Page 123 M-4272 Instruction Book Figure D-1 Transfer Event Log Summary Printout (page 1 of 2) D–2...
  • Page 124 Appendix – D Figure D-1 Transfer Event Log Summary Printout (page 2 of 2) D–3...
  • Page 125 M-4272 Instruction Book Figure D-2 Transfer Event Log Detail Printout (page 1 of 3) D–4...
  • Page 126 Appendix – D Figure D-2 Transfer Event Log Detail Printout (page 2 of 3) D–5...
  • Page 127 M-4272 Instruction Book Figure D-2 Transfer Event Log Detail Printout (page 3 of 3) D–6...
  • Page 128 Appendix – E Appendix E – Sequence of Events Sample Printout This Appendix contains Illustrations of the print-ready screens provided by the ISScom ® Sequence of Events Recorder Print Summary and Print Detail features. E–1...
  • Page 129 M-4272 Instruction Book Sequence of Event Recorder M4272 System: 05/23/2006, 15:02:02 Date: Date & Time Event Information 04/12/2006, 13:01:23.991 Input Pickup: 2 4 6 Output Pickup: 8 Input Drop: 5 04/12/2006, 13:10:25.245 Input Pickup: 2 4 6 Output Pickup: 8 Input Drop: 5 04/12/2006, 13:19:35.349...
  • Page 130 Appendix – E Date & Time Event Information Output Pickup: 1 Input Drop: 04/20/2006, 08:55:10.528 27B #1: Pickup Input Pickup: 2 3 5 6 Output Pickup: 1 04/20/2006, 08:55:10.541 27B #1: Pickup Input Pickup: 2 3 5 6 Output Pickup: 1 4 04/20/2006, 08:55:10.591 27B #1: Pickup Input Pickup: 2 3 4 6...
  • Page 131 M-4272 Instruction Book Figure E-2 Sequence of Events Recorder Detail Printout (page 1 of 4) E–4...
  • Page 132 Appendix – E Figure E-2 Sequence of Events Recorder Detail Printout (page 2 of 4) E–5...
  • Page 133 M-4272 Instruction Book Figure E-2 Sequence of Events Recorder Detail Printout (page 3 of 4) E–6...
  • Page 134 Appendix – E Figure E-2 Sequence of Events Recorder Detail Printout (page 4 of 4) E–7...
  • Page 135 M-4272 Instruction Book This Page Left Intentionally Blank E–8...
  • Page 136 Appendix – F Appendix F – Transfer Logic Time Sequence This Appendix contains Illustrations of the Transfer Logic Time Sequence for the Sequential Transfer Mode and the Simultaneous Transfer Mode. F–1...
  • Page 137 M-4272 Instruction Book Figure F-1 Time Sequence of Transfer Logic in Sequential Transfer Mode F–2...
  • Page 138 Appendix – F Figure F-2 Time Sequence of Transfer Logic in Simultaneous Transfer Mode F–3...
  • Page 139 M-4272 Instruction Book This Page Left Intentionally Blank F–4...
  • Page 140 For units with the optional HMI panel: • The ambient temperature where the Verify that the Power Supply (PS) fuses M-4272 is stored is within a range of 5° C are installed. to 40° C Determine the unit power supply rating •...
  • Page 141 NOTE: Pressing any button other than EXIT will return the user to DIAGNOSTIC MODE. Storage of the M-4272 greater than five years may require replacement of the lithium battery prior to Remove power from the unit. The unit placing the unit in service.
  • Page 142 Appendix – H Appendix H – Index 27#1 Trip/Breaker Trip Option, 4-65 and 27#4 Bus Phase Undervoltage, 4-67 Trip/Enable/Disable, 4-65 Trip/Tripping Command Time Delay, 4-65 Bus Phase Undervoltage Transfer Initiate (S1 to S1), 4-67 Automatic S2), 4-67 Delayed In-Phase 27B Bus Phase Undervoltage, 4-38, 4-67, SP-9 Transfer Save/Cancel, 4-52 Transfer/Blocking Inputs Selection, 4-52 Transfer/Delta...
  • Page 143 M-4272 Instruction Book Auto Transfer Mode, 4-46 Outputs, 4-41 Both S1 & S2 Breakers Open, 4-46 Auto Fast Transfer Ready Outputs, 4-41 External Control Inputs Configuration, 4-47 Blocking After Transfer Time, 4-38 Delayed In-Phase Transfer, 4-51 Breaker Fixed Time Transfer, 4-53...
  • Page 144 Appendix – H Device Function Settings, 1-1, 4-34:4-36, 4-38:4-42, 4-44, 4-67:4-69, 4-71, 4-73, SP-8 Address, 4-10, 4-13 ON/OFF (MBTS Front Panel), 2-2, 2-10 DFT, SP-13 General Unit Setup, 4-1 DHCP Protocol, 1-3, 4-14:4-16 Grounding Requirements, 5-4 Diagnostic Test Procedures, 6-1, 6-3 Diagnostic/Time Sync LED, 2-2 Display Test, 2-4, 6-3, 6-9 Hardware Requirements, 5-17...
  • Page 145 M-4272 Instruction Book Insulation Coordination, 5-4 SP-2, SP-15 IRIG-B, 1-3, 3-11, SP-2, SP-14:SP-15, SP-17 M-3972 Status Module, SP-2, SP-15 ISScom Manual COM Port Definitions and System’s Delayed In-Phase Transfer Communication Address, 4-11 Blocking Inputs Selection, 4-59 Comm Access Code Setup, 4-2...
  • Page 146 Appendix – H Metering Test Setup, 6-13 S1 BF Source 1 Breaker Failure (Breaker Status), Tests, 6-1:6-2, 6-13 4-71:4-72 MODBUS, 1-3, 4-14, 5-17, B-1, C-3, SP-2, SP-15 S2 BF Source 2 Breaker Failure (Breaker Status), 4-73 Module LED Test, 2-4, 6-8 Scaling, 3-39 Monitor Status/Metering, 2-2, 2-15 Screen Blanking, 2-1:2-2...
  • Page 147 M-4272 Instruction Book System System Access Codes, 3-31 Monitor, 3-11 Comm Access, 3-31 Phasor Diagram and Sync Scope, 2-2, 2-13 User Access, 3-31 Primary Metering, 2-2, 2-12, 3-12 Firmware Update, 3-33 Secondary Metering and Status, 2-2, 2-12, Outputs Test, 3-32...
  • Page 148 Declaration of Conformity Appendix – I Appendix I–Declaration of Conformity I–1...
  • Page 149 M-4272 Instruction Book This Page Left Intentionally Blank I–2...
  • Page 150 There shall be no warranties which extend beyond those contained in the Beckwith Electric Co., Inc. terms of sale. All rights reserved by Beckwith Electric Co., Inc. No reproduction may be made without prior written approval of the Company.
  • Page 151 BECKWITH ELECTRIC CO., INC. 6190 - 118th Avenue North • Largo, Florida 33773-3724 U.S.A. PHONE (727) 544-2326 • FAX (727) 546-0121 E-MAIL marketing@beckwithelectric.com WEB PAGE www.beckwithelectric.com © 2005 Beckwith Electric Co. 800-4272-IB-04 07/08 Printed in USA...

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