THOMSON MEC 2 - V1.4 Service Manual
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THOMSON MEC 2 - V1.4 Service Manual

THOMSON MEC 2 - V1.4 Service Manual

Microprocessor engine/generator controller (with eap 110 remote annunciator options)
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MEC 2
MICROPROCESSOR
ENGINE/GENERATOR CONTROLLER
(WITH EAP 110 REMOTE ANNUNCIATOR OPTIONS)
INSTALLATION, OPERATING &
SERVICE MANUAL

Software Version 1.4

PM056 Rev 6 05/10/15
th
9087A – 198
Street, Langley, BC Canada V1M 3B1
Telephone (604) 888-0110
Telefax (604) 888-3381
E-Mail: info@thomsontechnology.com
www.thomsontechnology.com

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  • Page 1: Software Version

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER (WITH EAP 110 REMOTE ANNUNCIATOR OPTIONS) INSTALLATION, OPERATING & SERVICE MANUAL Software Version 1.4 PM056 Rev 6 05/10/15 9087A – 198 Street, Langley, BC Canada V1M 3B1 Telephone (604) 888-0110 Telefax (604) 888-3381 E-Mail: info@thomsontechnology.com...

  • Page 3: Table Of Contents

    EXTERNAL PANEL CONTROL WIRING 2.9. REMOTE START CONTACT FIELD WIRING 2.10. MEC MOUNTING LOCATION/INSTALLATION 2.11. FACEPLATE MOUNTING DIMENSIONS 2.12. MEC 2 ASSEMBLY - SIDE VIEW 2.13. DIELECTRIC TESTING DESCRIPTION 3.1. LEXAN FACEPLATE 3.2. PRINTED CIRCUIT BOARD PM056 Rev 6 05/10/15...
  • Page 4 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER FAULT CIRCUIT DESCRIPTIONS 4.1. MEC 2 FUNCTIONAL BLOCK DIAGRAM 4.2. INTERNAL FAULT CIRCUITS 4.3. DIGITAL FAULT INPUT CIRCUITS 4.4. ANALOG FAULT INPUT CIRCUITS CONTROL OUTPUT CONTACT DESCRIPTIONS 5.1. RUN, CRANK OUTPUT CONTACTS 5.2. PROGRAMMABLE OUTPUT CONTACT...
  • Page 5 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER 9.6. CALIBRATION MENU PROGRAMMING SHEETS 10.1. SUMMARY CONFIGURATION DATA SHEET MAIN CONFIGURATION 11.1. ANALOG FAULT PROGRAMMING MENU 11.2. DIGITAL FAULT PROGRAMMING MENU 11.3. CALIBRATION MENU SPECIFICATIONS CONNECTION DIAGRAM TROUBLE SHOOTING NOTES PM056 Rev 6 05/10/15...

  • Page 6: Introduction

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER INTRODUCTION 1.1. PRODUCT REVISION HISTORY The following information provides an historical summary of changes made to this product since the original release. Software Version Added AC protection faults Under/Over Voltage, Under/Over 1.4 05/10/15 Frequency and Over Current Revised Idle circuit operation with digital faults #1 &...
  • Page 7 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER Key changes implemented as follows: 1.2 02/01/31 Auto Mains Failure (AMF) logic with new timers, control outputs and display features Line to Neutral AC Voltage Display on 3 Phase 4 Wire Systems (neutral connection required) Analog Shutdown Capability...

  • Page 8: General Description

    All standard and optional features of the MEC 2 are configurable from the front panel LCD display and are security password protected. The LCD display screen prompts are in plain English, providing a user-friendly operator interface with many display options available.

  • Page 9: Installation

    Failure to do so may cause personal injury or death. 2.2. BATTERY SUPPLY INPUT The MEC 2 can operate on any battery supply from 10 to 30 volts DC. The battery DC negative or common conductor must be grounded to the main generator-set frame PM056 Rev 6 05/10/15...

  • Page 10: Speed Sensing Input

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER ground. The MEC 2 is internally protected by a solid state type fuse that protects it from internal short circuits. The solid state fuse will automatically reset when the over current condition is removed. Wiring from the engine cranking battery to the control panel should conform to the following guidelines to avoid possible controller malfunction and/or damage.

  • Page 11: Dc Voltage Inputs

    For 3 phase 3 wire systems (i.e. no neutral) or high voltage systems, potential transformers must be used. Refer to FIGURES #1 - 4 for voltage sensing connections. To display generator line to neutral voltage in a 3 phase 4 wire system, the neutral must be connected as shown.
  • Page 12 208VAC L-L, 120VAC L-N when referenced to common GEN. GEN. neutral. (Delta connected generators required PTs as per figure#3 & no phase C PT) FIGURE #1 FIGURE #2 3Ø, 4W 208/380/480/600VAC DIRECT SENSING 1Ø, 3W 120/240VAC DIRECT SENSING SOLIDLY GROUNDED NEUTRAL SYSTEM...

  • Page 13: Ac Current Input

    Note: These outputs will require external over current protection (Maximum 10 Amp). The use of AC or DC operated solenoids or relays in control systems can sometimes cause high voltage spikes on the DC power supply, which may cause electronic devices to fail.

  • Page 14: Remote Start Contact Field Wiring

    2.9. REMOTE START CONTACT FIELD WIRING Field wiring of a remote start contact from a transfer switch to a control panel should conform to the following guidelines to avoid possible controller malfunction and/or damage. 2.9.1. Remote start contact wires (2 - #14 AWG (2.5mm ) should be run in a separate conduit.

  • Page 15: Faceplate Mounting Dimensions

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER The MEC 2 controller can be installed onto a door of a control panel using one of the following methods: • The first method requires a special door cutout for the LCD display and LED’s as shown in FIGURE #6.

  • Page 16: Mec 2 Assembly - Side View

    2. The high voltage mylar barrier (P/N TMW;10805;1) must be installed as shown when the MEC 2 is installed onto the door of a control panel. 3. When the MEC 2 is installed on a door without 1” PEM studs, 1” machine screws must be used.

  • Page 17: Dielectric Testing

    Rev. 1 00/07/13 2.13. DIELECTRIC TESTING Do not perform any high voltage dielectric testing on the control panel with the MEC 2 connected in the circuit as serious damage will occur to the controller. All AC control fuses connected to the MEC 2 must be removed if high voltage dielectric testing is performed on the control panel.

  • Page 18: Description

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER DESCRIPTION The MEC 2 controller consists of three parts; a Lexan faceplate which is mounted externally on the enclosure door, a printed circuit board (PCB) which is mounted inside the enclosure door, and a rear cover for the PCB.
  • Page 19 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER held down, the displayed value will be “decremented” to a lower value as desired. Note: The longer the pushbutton is held down, the faster the value will be decremented. INCREMENT pushbutton. The INCREMENT function is used to change a programming value while in the programming mode or to select a desired programming menu loop.

  • Page 20: Printed Circuit Board

    (flashes) when any pre-programmed shutdown fault has been activated. 3.2. PRINTED CIRCUIT BOARD The printed circuit board (PCB) is shown in FIGURE #11. The PCB contains the following user interface items: MEC 2 CIRCUIT BOARD LAYOUT MP1 MP2 1...
  • Page 21 DC power input and ground connection terminal block 3.2.2. DIAGNOSTIC LED’S The MEC 2 controller provides five diagnostics LED lights that are mounted on the rear of the printed circuit board as per FIGURE #11. Their functions are described as follows: 3.2.2.1.WATCHDOG This LED flashes on and off at irregular intervals which indicates that the microprocessor is functioning normally.

  • Page 22: Fault Circuit Descriptions

    FAULT CIRCUIT DESCRIPTIONS The MEC 2 engine-generator controller utilizes many analog and digital inputs to perform both monitoring and control functions. Three types of fault circuits are used to monitor and control the engine-generator set. The first type is Internal Fault Circuits that are derived from a combination of digital and analog inputs.

  • Page 23: Mec 2 Functional Block Diagram

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER 4.1. MEC 2 FUNCTIONAL BLOCK DIAGRAM FEATURE STANDARD FAULTS OUTPUT CONTACTS MAGNETIC OVERSPEED PICKUP SHUTDOWN FAULT LOSS OF SPEED 10A, 240Vac, 8A/24Vdc DISPLAY LOGIC ALARM/SHUTDOWN RESISTIVE OVERCRANK SHUTDOWN AUTO PUSHBUTTON SWITCH NOT IN AUTO CRANK...

  • Page 24: Internal Fault Circuits

    The loss of speed fault circuit is initiated when the engine’s speed sensing circuit does not detect a speed signal for a period more than 2 seconds following a run signal. The loss of speed fault may be user programmed as a latching shutdown fault or alarm only.

  • Page 25: Digital Fault Input Circuits

    HIGH FUEL LEVEL FAIL TO SYNC “Blank” (i.e. no text for unused inputs) 4.3.1. STANDARD DIGITAL FAULT CIRCUITS The MEC 2 is supplied from the factory with four standard digital fault circuits as follows: PM056 Rev 6 05/10/15 Thomson Technology...

  • Page 26: Analog Fault Input Circuits

    Section 9.4 4.4. ANALOG FAULT INPUT CIRCUITS The MEC 2 Engine Controller provides up to eight analog fault input circuits that are user programmable. Each analog fault input circuit is activated via specific analog signal type. WARNING!!!
  • Page 27 Engine speed Loss of speed signal Shutdown Engine speed All fault circuits may be user field programmed for different control functions however their designated fault function is not programmable. Refer to the programming instructions for further information. 4.4.2. GENERATOR AC VOLTAGE 4.4.2.1.GENERATOR UNDER VOLTAGE...
  • Page 28 Refer to the programming instructions for further information. 4.4.3. BATTERY VOLTAGE ANALOG INPUT The MEC 2 battery voltage sensor measures DC voltage on terminals B+ and B- that are connected to the engines cranking battery. The battery voltage sensor provides information to perform the following control functions: 4.4.3.1.WEAK BATTERY ALARM...
  • Page 29 (i.e. open or shorted signal). In case of a sender or wiring failure, the MEC 2 will display zero or 9999 °C and will initiate an alarm signal as programmed by the user.
  • Page 30 (i.e. open or shorted signal). In case of a sender or wiring failure, the MEC 2 will display zero or 9999 PSI and will initiate an alarm and/or shutdown signal as programmed by the user. The engine oil pressure analog input provides the following control function: 4.4.5.1.LOW OIL PRESSURE #1 ALARM...

  • Page 31: Control Output Contact Descriptions

    5.1.1. RUN OUTPUT The Run output contact is a Form A dry contact and is used to control the engines “run” circuit. This typically includes external control devices such as “fuel rack solenoids” or electronic governors. Note: An additional pilot relay will be required to energize high current devices that exceed the 10A resistive rating.

  • Page 32: Programmable Output Contact

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER 5.1.2. CRANK OUTPUT The crank output contact is a Form A dry contact and is used to control an external crank pilot relay that directly controls the engine starter motor. Note: An external crank pilot relay is required to energize the high current starter motor pinion solenoid that exceeds the 10A resistive crank output contact rating.
  • Page 33 The designated programmable output relay will energize when the remote start input has not been activated (i.e. contact on terminals 16 & 17 is not closed) and the Return Delay & Neutral Delays have expired (if programmed). The output will de-energize when the remote start input has been activated and the Engine Start Delay &...
  • Page 34 The output will remain energized until the engine’s speed drops below the low speed setpoint (typically 5% of rated speed). Note: An external pilot relay will be required if the main air flap solenoid current rating exceeds the MEC 2 contact rating. (Refer to Section 2.7)

  • Page 35: Expansion Output Module Option

    5.2.15.EPS SUPPLYING LOAD The designated programmable output relay will energize when the engine is running and the generator is supplying current to the load more than or equal to 10% of nominal CT ratio. EXPANSION OUTPUT MODULE OPTION Optional expansion output modules are available for the MEC 2 engine generator controller.
  • Page 36 PROGRAMMABLE MODULE ADDRESS (REMOVE JUMPER FOR STANDARD C282/NFPA FAULTS,ADD JUMPER FOR ADDITIONAL FAULTS) CONTACT LOGIC IS INDIVIDUALLY PROGRAMMABLE VIA PIN JUMPERS (CONTACT TO OPEN OR CLOSE W HEN FAULT ACTIVATED) PROGRAMMABLE CONTACT - USER CONFIGURED FUNCTION VIA MEC 2 SOFTW ARE (REFER TO MEC 2 LITERATURE) "GRD"...
  • Page 37 Contact configuration is via circuit board mounted jumper pins and clips. Refer to FIGURE #18 for jumper pin location and configuration settings. Each output contact is rated maximum 0.5A 120VAC, 1.0A 30Vdc resistive.
  • Page 38 C282 or NFPA 110 standard faults exclude analog faults Over/Under voltage, Over/Under Frequency, Overcurrent, spare digital inputs #5-#12 and programmable output #6 (i.e. must specify second expansion module to obtain contacts for these faults). G:\ENGINEER\PRODUCTS\MEC20\MEC20_17.VSD...

  • Page 39: Eap 110 Remote Annunciator Option

    LED lights & audible alarm annunciation. The EAP 110 is DC powered from the same 12 or 24V engine starting battery as the engine controller is connected to. Two EAP 110 annunciators can be interconnected together via the communication link to allow up to 40 remote annunciator points from a single engine controller.

  • Page 40: Operating Instructions

    8.1. MEC 2 POWER-UP OPERATION SEQUENCE When the MEC 2 is first energized with DC supply voltage at terminals B+ & B-, the controller will power-up into a fail-safe mode, preventing possible engine operation. The controller will default to an Emergency Stop failure mode and must be manually reset before the controller is put into normal operation.
  • Page 41 BATTERY VOLTAGE/ENGINE SPEED (TACH) ENGINE TEMPERATURE/OIL PRESSURE PROGRAM MENU 8.2.1. OPERATING STATUS MENU The operating status menu provides the operator with detailed information as to the status of the engine-generator set. NOTE: The operating status screen may be momentarily replaced with a time delay countdown screen when a start or stop sequence is initiated.
  • Page 42 UNIT RUNNING UNIT SHUTDOWN UNIT ALARM 8.2.1.1.UNIT READY This indicates that the controller is in “Auto” position and there are no active shutdowns or alarms. 8.2.1.2.SWITCH IN OFF This indicates that the controller has been selected to the “off” position from the front panel keypad pushbutton.
  • Page 43 ENGINE START DELAY 45 SEC Displays specific time delay function currently in operation Displays current time in seconds or minutes that are left in the specific timing sequence. NOTE: During a timer countdown sequence, a different display screen may be selected by pressing the ENTER pushbutton.
  • Page 44 LCD DISPLAY 532.31 8.2.4.3.GENERATOR PHASE VOLTAGE DISPLAY (LINE TO LINE) The generator phase voltage screen allows the operator to view the generator AC voltage on all 3 phases (or single phase system as selected). LCD DISPLAY PM056 Rev 6 05/10/15...
  • Page 45 TO NEUTRAL) The generator phase/neutral display allows the operator to view the generator line to neutral voltage for all 3 phases of the system. Note: The generators neutral must be connected to MEC 2 terminal TB1-VN and the “neutral connected” prompt in the main program menu must be selected as “Yes”.
  • Page 46 1/10 of a hertz. Displays unit operating hours 8.2.5. ENGINE PARAMETER DISPLAY Two engine operating parameter screens are provided as described below. 8.2.5.1.BATTERY VOLTAGE/ENGINE SPEED (tachometer) The battery voltage and engine speed are displayed simultaneously on this screen.
  • Page 47 (PSI) or in Kilopascals (KPA) (as selected). 8.2.6. PROGRAM MENU The programming menu is used to access the MEC 2 programmable functions such as time delays, analog fault settings, digital fault settings and calibration. Access to the programming sub-menus may only be obtained with a security password number.

  • Page 48: Sequence Of Operation

    When the “RUN” pushbutton on the front faceplate keypad is pressed, an ENGINE START DELAY timer will be initiated. Note: The start sequence will not be initiated if any shutdown fault condition is present. Once the engine start delay time expires, an engine RUN and CRANK output signal will be initiated.
  • Page 49 When the controller is applied in an Auto Mains Failure (AMF) application with a transfer switch, it must be wired as per FIGURE 21 shown at the end of this section. Programmable output #3 must be selected for Utility Ready To Load and programmable output #4 must be selected for Gen Ready To Load.
  • Page 50 Engine starts following expiry of the Engine Start Delay timer (Utility Ready To Load output stays energized). • Once the engine has started and the generator output rises above the programmed voltage and frequency limits, a Warmup timer is initiated. •...
  • Page 51 • Engine starts following expiry of the Engine Start delay timer. • Once the engine has started and the generator output rises above the programmed voltage and frequency limits, a Warmup timer is initiated. • Once the Warmup timer expires the Utility Ready to Load output de- energizes and the Neutral Delay timer is initiated.
  • Page 52 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER 8.3.5.5.NO LOAD TEST: • To allow a timed No Load Test of the engine/generator set while using the AMF control application, a digital input contact from an external timer must be programmed for NO LOAD Test (Refer to Section 9.5...
  • Page 53 PROGRAMMABLE OUTPUT #3 MUST BE PROGRAMMED FOR "UTILITY READY TO LOAD" PROGRAMMABLE OUTPUT #4 MUST BE PROGRAMMED FOR "GENERATOR READY TO LOAD" ALL COMPONENTS SHOWN EXTERNAL TO THE MEC 2 / MEC 20 ARE OPTIONAL ITEMS 3 POLE CHANGEOVER SWITCH SHOWN...

  • Page 54: Control Pushbuttons

    In this position, a signal will be issued to a remote transfer switch to permit an automatic engine start and load transfer. Once initiated, the engine will receive a start signal from the transfer switch and upon the generator reaching nominal voltage and frequency levels, a load transfer will be initiated.

  • Page 55: Programming Instructions

    8.4.5. LAMP TEST A lamp test feature is provided to test all software controlled LED lights as well as the LCD display. To activate the lamp test feature, simultaneously push the INCREMENT and DECREMENT pushbuttons. The LED’s and LCD display will illuminate for approximately 2 seconds then return to their original status.
  • Page 56 YES prompt and push the ENTER button. PASSWORD Use the INCREMENT or DECREMENT pushbuttons to ramp the displayed number up or down to the desired password access number. Press the ENTER pushbutton when the correct number is displayed. NOTE: If an invalid number is entered, programming access will be denied.

  • Page 57: Basic Programming Operation

    To change a programmed parameter, use the INCREMENT or DECREMENT pushbuttons to scroll through the available options or to adjust a value up or down to the desired number. When the desired option or number is displayed, press the ENTER pushbutton to accept the new value.

  • Page 58: Main Programming Menu

    “5”). 9.3.6. CURRENT SENSING RATIO For current sensing wiring connections from current transformers (CT’s), enter the calculated CT ratio (e.g. when using a 600:5 CT, enter a number of “120”). PM056 Rev 6 05/10/15 Thomson Technology...
  • Page 59 Note: This value will be ignored if only one attempt has been programmed. 9.3.12.STARTER RE-ENGAGE DURATION This feature will check for a speed signal while cranking. If no speed signal is sensed, the controller assumes that the engine starter is not turning the engine over (for whatever reason), and disengages it after the programmed time delay, and re-engages it again.
  • Page 60 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER seconds will attempt cranking for 5 seconds after which time if no speed signal is detected, the crank output will be removed for a preset 1 second delay before re- engaging. Note: This action is more than a cycle cranking function and is independent of the number of attempts selected, therefore, the "crank"...
  • Page 61 If selected, ensure that the speed signal is not less than 3.0VAC from the magnetic pick up while the engine is cranking. Note: If this feature is disabled, no over speed protection or crank disconnect will be provided if the speed signal fails.
  • Page 62 The Neutral Delay timer ensures the load voltages decay before the transfer is initiated. Set to the desired time in seconds. The Neutral Delay timer is typically set for 3 seconds. Refer to Section 9.4 for further details on this timing function.
  • Page 63 The purpose of the Return Delay timer is to ensure that the utility power has returned to a steady state for the selected time period before the load is transferred back to the utility supply.

  • Page 64: Analog Fault Programming Menu

    Note: For AC voltage fault circuits, two levels (i.e. pick-up & drop-out) must be programmed. 9.4.2. ACTION This setting allows a fault circuit to be programmed as either an alarm or a shutdown. 9.4.3. ALARM LATCH If an alarm fault was programmed, it may be selected as a ”latching”...

  • Page 65: Digital Fault Programming Menu

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER 9.4.5. TRANSIENT DELAY TIMES This allows the selected fault circuit to be inhibited from being activated until the specified time delay period has expired. Delay times from 0.0 to 999.9 seconds are available by entering the time required.
  • Page 66 Note: This programming prompt only appears if alarm faults are programmed. Shutdown faults are automatically set as latching. 9.5.4. POLARITY This setting allows the digital fault circuit to be set for Open to Fail or Close to Fail sensing contacts. 9.5.5. BYPASS ON START DELAY This allows the alarm or shutdown circuit to be disabled until after the bypass timer has expired.

  • Page 67: Calibration Menu

    BYPASS ON START TRANSIENT TIME The No Load Test digital input feature is typically used in an AMF application where it is required to do an automatic timed No Load Test of the engine/generator set. A contact from an external exercise clock timer is required to be connected to the digital input circuit which is programmed for “No Load...
  • Page 68 ZERO function must be calibrated before the SPAN function. Displays the actual voltage measurement that will be the same value as shown on the MEC 2 display menus for generator supply. This voltage reading may be calibrated higher or lower by changing the correction factor number.
  • Page 69 (i.e. phase to phase or phase to neutral) with the ZERO function selected. Use the INCREMENT or DECREMENT pushbuttons to adjust the correction factor number to obtain zero volts on the right hand side of the display as confirmed with the external voltmeter. The factory default correction factor is 127.
  • Page 70 9.6.4. CURRENT SENSING CALIBRATION CURRENT A ZERO 350A Displays the generator load current (phase A, B or C) to be calibrated. Displays the type of calibration function, either ZERO or SPAN. Displays the calibration correction factor number (0-255) used to obtain the correct current reading.
  • Page 71 Use the INCREMENT or DECREMENT pushbuttons to adjust the correction factor number while observing the displayed current level. Adjust the correction factor number just until “0” amps on the display is obtained. With the correct current displayed, press the ENTER pushbutton to accept the correction factor number.
  • Page 72 Use the INCREMENT or DECREMENT pushbuttons to adjust the correction factor number while observing the displayed current level on the MEC 2. Adjust the correction factor number to obtain an identical current reading as measured with the external AC ammeter.
  • Page 73 Use the INCREMENT or DECREMENT pushbuttons to adjust the correction factor number while observing the displayed battery voltage level on the MEC 2. Adjust the correction factor number to obtain an identical voltage reading as measured with the external DC voltmeter.
  • Page 74 Temperature or Pressure reading. Displays the actual temperature or pressure measurement that will be the same value as shown on the MEC 2 display menus. This reading may be calibrated higher or lower by changing the correction factor number.
  • Page 75 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER The calibration procedure is to be done only at a single point, which is the normal operating temperature of the engine. Connect a temporary engine mounted temperature gauge of suitable accuracy and start the engine. Once the engine reaches normal operating temperature, enter the programming mode and scroll to the “Engine Temperature Offset”...
  • Page 76 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER The calibration procedure is to be done only at a single point, which is the normal operating pressure of the engine. Connect a temporary engine mounted pressure gauge of suitable accuracy and start the engine.
  • Page 77 6284 Sender resistance data shown are for Oil Pressure Sender p/n-003654 (Thomson p/n), Manufacturer- Datcon, p/n 102227. Datcon Sender must be used with MEC software version 1.81 or greater (previous software versions cannot be used). Figure #18 PM056 Rev 6 05/10/15...

  • Page 78: Programming Sheets

    Programmable #4 – Form C Engine Running (Std Default) or Custom ________________________________ Programmable #5 – Form A/B EPS Supplying Load/Engine Running (Std Default) or Custom _______________ (EAP 110/MEC 2 Exp –Group 1 Only) Programmable #6 – Form A/B] Disabled (Std Default) or Custom _____________________________________ (EAP 110/MEC 2 Exp –Group 2 Only)

  • Page 79: Main Configuration

    LINE TO LINE VOLTAGE XXXXX VAC 120-15000VAC SYSTEM FREQUENCY 50HZ/60HZ TOGGLE BETWEEN 50/60HZ SYSTEM PHASES SINGLE PHASE/3 PHASE TOGGLE BETWEEN 1 & 3 PHASE NEUTRAL CONNECTED TOGGLE BETWEEN YES/NO VOLTAGE SENSING VOLTAGE SENSING PT RATIO RATIO ENTER NUMBER 1-208 (1=DIRECT) CURRENT SENSING...
  • Page 80 XX SECONDS 0-99 SECONDS COOLDOWN DELAY XX SECONDS 0-9999 SECONDS NOMINAL RPM XXXX RPM 0-4000RPM FLYWHEEL TEETH ENGINE SPEED SENSING VIA MAGNETIC PICK UP 0-999 TEETH CRANK DISCONNECT XX PERCENT 0-100% OVER SPEED XX PERCENT 100-150% OVER SPEED TRANSIENT X.X SEC 0.0-9.9 SEC...

  • Page 81: Analog Fault Programming Menu

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER MAIN PROGRAMMING MENU PROG OUTPUT #6 WARMUP DELAY 0 – 99 SECONDS NEUTRAL DELAY 0 – 99 SECONDS RETURN DELAY 0 – 999 SECONDS RESET RUN HOURS ACCESS VIA MASTER PASSWORD ONLY YES/NO TOGGLE YES/NO, 11.1.

  • Page 82: Digital Fault Programming Menu

    SENDER PRESS#1 ALARM LOW OIL PRESS 20PSI SENDER PRESS#2 SHUTDOWN * Indicates feature is non-programmable (i.e. is fixed) in software 11.2. DIGITAL FAULT PROGRAMMING MENU TYPICAL PROGRAM FACTORY DEFAULT SETTINGS DIGITAL FAULT PROGRAMMING MENU FAULT INPUT # ACTION ALARM POLARITY...
  • Page 83 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER CALIBRATION MENU VOLTS SPAN XXX XXXVAC VOLTS ZERO XXX XXXVAC VOLTS SPAN XXX XXXVAC VOLTS ZERO XXX XXXVAC VOLTS ZERO XXX XXXVAC VOLTS ZERO XXX XXXVAC VOLTS ZERO XXX XXXVAC VOLTS ZERO XXX XXXVAC VOLTS...
  • Page 84 MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER CALIBRATION MENU ZERO XXX XXXAAC CURRENT SPAN XXX XXXAAC BATTERY VOLTAGE SPAN XXX XX.X VDC ENGINE TEMPERATURE XXX XXX C/F OIL PRESSURE XXX XXXX PSI/KPA PM056 Rev 6 05/10/15 Thomson Technology...

  • Page 85: Specifications

    Power supply: 10 to 30Vdc, negative ground • Operating temperature: -15°C to +50°C Extended temperature ratings are available using the VFD display option. Extended ratings are: Operating -40°C to +85°C, Storage -50°C to +85°C • Environmental (Faceplate): NEMA 1 •...

  • Page 86: Connection Diagram

    N O TE S : CONTACTS RATED M AXIM UM 10A, 240Vac, 8A, 24Vdc RESISTIVE SENDER INPUTS M AY BE PROGRAM M ED FOR ALARM AND/OR SHUTDOW N CONDITIONS OF LOW OIL PRESSURE OR HIGH ENGINE TEM PERATURE LOGIC IS SOFTW ARE PROGRAM M ABLE FOR OPEN OR CLOSE ON FAIL GENERATOR SUPPLY M UST UTILIZE A SOLIDLY GROUNDED NEUTRAL SYSTEM –...

  • Page 87: Trouble Shooting

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER TROUBLE SHOOTING A number of problems can cause the MEC 2 controller not to function properly. Refer to the following list of typical problems. Consult the factory for any detailed information or for any problems not listed.
  • Page 88 Verify correct magnetic pick-up signal at cranking (2.0VAC min.). - Check that the RUN output LED (on the rear of the PCB) is on. If yes, verify relay contact operation on terminals #18 & #19. Over speed shutdown occurs at normal speed...
  • Page 89 (i.e. to a common ground point). Engine temperature or oil pressure displays 9999 - Check the wiring from the MEC 2 terminal #37 & #38 to the engine mounted sender are correct (i.e. wiring is not open or shorted).

  • Page 90: Notes

    MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER NOTES PM056 Rev 6 05/10/15 Thomson Technology...

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