AUTOMATIC TRANSFER SWITCH & START UNIT FOR DIESEL GENERATORS Designed for diesel generators Long life membrane front key pad EEPROM internal memory 1 GENERAL INFORMATION EAOM-102 Automatic Transfer Unit is designed to be automatically engaged in case of energy failures in generators of various capacities The Automatic Transfer Unit is capable of disengaging and thus protecting either the generator or the energy receiving system (load) depending upon the type of failure Any failures are indicated on the Failure Led Indicators upon the Transfer Unit and could be stored in memory until failure deletion In case of any failure, the unit is also capable of giving a vocal warning (horn) and either a Yellow or Red Alarm warning output depending upon the type of failure and in order to warn the operator in charge The front board of the Automatic Transfer Unit features push-buttons to select the run mode, to silence the horn, to delete failures and to test the bulb, as well as led indicators to show failures and run modes EAOM-102 Automatic Transfer Unit which features serial communication outlet (RS-232) is capable of connecting to personal computers (PC) This connection enables the operator to observe the mains, generator voltages, speed information, failures and relay outlet status on the computer display Added to this, the programme parameter values stored in the Automatic Transfer Unit could be changed and current values could be observed Also, the programme parameters of the Automatical Transfer Board could be changed by means of a special programmer Led indicators for failures and run modes could be tested by means of a bulb test Pages 1 / 10
2 RUN MODES 21 MANUAL RUN MODE In the manual run mode, Automatic Transfer Unit is disengaged and incapable of intervening with the system For this reason, it is not possible for the generator to be automatically engaged by the Automatic Transfer Unit in case of any energy failures in the manual mode However, the mains, generator voltages, speed information could still be observed and indicated on the mimic diagram in this mode Programme parameters of the system could only be changed and observed in the manual mode 22 AUTOMATICAL RUN MODE In this mode, the generator is automatically engaged in case of any energy failures and the system failures are observed This mode disengages either the generator or the energy receiving system (load) (depending on the type of failure) in failures arising after the generator is engaged and sounds the horn 23 TEST RUN MODE This mode is used to engage the generator in the presence of the mains and run the generator unloaded As in the automatic mode all kinds of failures are observed in this mode and the generator is disengaged according to the type of failure and the horn is sounded In case an energy failure occurs while the unit is running in this mode, then the Transfer Unit converts to the Automatic Mode and transfers the load onto the generator 24 REMOTE START RUN MODE The Remote Start Run Mode is similar to the Automatic Mode In this mode, the generator is not automatically engaged in case of any failures The generator could only be engaged if the remote start energy inlet is permitted When the remote start inlet is passivated, the engine sops immediately 25 INTER-MODAL TRANSITION It is possible to make transitions to and from the Manual, Automatic, Remote Start and Test Modes at any moment Only, when the Automatic Transfer Unit is converted into the Test Mode while there is no mains, the Unit automatically returns to the Automatic Mode and starts the system 3 FAILURES OBSERVED BY THE AUTOMATICAL TRANSFER UNIT AND TYPES OF BEHAVIOR DURING SAID FAILURES 31 FAILURES INDICATED BY A LED INDICATOR ON THE AUTOMATICAL TRANSFER UNIT 1- Start Failure 2- Low Oil Pressure 3- Excessive Temperature 4- High/Low Speed 5- Overload 6- Charge Generator Failure 7- Generator Voltage Failure 8- Reserve - 1 Failure 9- Reserve - 2 Failure 10- Reserve - 3 Failure Pages 2 / 10
32 TYPES OF BEHAVIOR DURING FAILURE 1- Start Failure: In case the engine fails during the starting period, then the starter is activated continuously After the said period is expired the operator waits during a period which is twice the starting period and this process is repeated until the engine running information is received In case the said information is not received after a number of attempts to start the engine, a start failure incurs, the horn is sounded and a red warning is given 2- Low Oil Pressure: In case a problem exists in the oil circulation system of the engine, then an Oil Pressure Failure incurs, the engine stops, the horn is sounded and a red warning is given 3- Excessive Temperature: In case the engine heats excessively, then an Oil Pressure Failure incurs, the engine stops, the horn is sounded and a red warning is given 4- High/Low Speed: In case the output voltage frequency (speed) of the generator is beyond the predetermined minimum and maximum limits, then a High/Low Speed Failure incurs, the engine stops, the horn is sounded and a red warning is given 5- Overload : In case the current drawn by the energy receiving system (load) exceeds the capacity of the generator, then an Overload Failure incurs, the load is separated from the generator, the horn is sounded and yellow warning is given 6- Charge Generator Failure: If the unit fails to read a voltage from the charge generator voltage inlet while the engine is running, then a Charge Generator Failure incurs, the horn is sounded and yellow warning is given 7- Generator Voltage Failure: In case the lever of voltage generated by the generator is beyond the predetermined maximum and minimum limits, then a Generator Voltage Failure incurs, the engine stops, the horn is sounded and red warning is given 8- Reserve - 1, Reserve - 2, Reserve - 3 Failures: There are types of behavior which could be separately determined for each reserve failure inlet These are as follows : 1- Only Horn Temporary 2- Only Horn Permanent 3- Generator Contactor Releaser + Horn 4- Engine Stopper + Generator Contactor Releaser + Horn 9- Emergency Stop : When an outside Emergency Stop information arrives at the Automatic Transfer Unit, the engine stops running, the starter stops, the horn is sounded and a red warning is given 4 PROGRAMME PARAMETERS 41 CHANGING PROGRAMME PARAMETERS The Programme Parameters upon the Automatic Transfer could be changed in 3 ways: 1-Via the Automatic Transfer Board 2-By means of a serial communication line connected to a personal computer (PC) 3-Via the Programmer Case connected to the Automatic Transfer Unit's Serial Communication port 411 Entering of Programme Parameters via the Automatic Transfer Board In order to enter the programming mode, convert the Automatic Transfer Unit to Manuel Mode first Push the PROG button When the PROG button is pushed, the transfer board shall ask you to enter the Operator password If you wish to enter the Technician password instead of the Operator password, push the MODE button for 10 seconds After this period is expired, the transfer unit shall ask you the Technician password If you enter either the Operator or Technician password correctly, then the Programmer Case shall verify the password and permit you to enter the Programming Mode You may access any desired parameter via the MODE button and read its value You may change the parameter value by making use of the INC and DEC buttons and store the new values by making use of the ENTER button In order to quit the programming mode after changing all desired parameters, push the MODE button until " out " is displayed The transfer board shall quit the programming mode if you push ENTER after seeing this massage Pages 3 / 10
Pages 4 / 10
412 Entering of Programme Parameters By Means of Programmer Case In order to enter the programming mode, convert the Automatic Transfer Unit to Manuel Mode first Push the PROG button When the PROG button is pushed, the transfer board shall ask you to enter the Operator password If you wish to enter the Technician password instead of the Operator password, push the MODE button for 10 seconds After this period is expired, the transfer unit shall ask you the Technician password " PROGRAMMING MODE " " TEC PASSWORD [ ] " If you enter either the Operator or Technician password correctly, then the Programmer Case shall verify the password and permit you to enter the Programming Mode You may access any desired parameter via the MODE button and read its value You may change the parameter value by making use of the INC and DEC buttons and store the new values by making use of the ENTER button In order to quit the programming mode after changing all desired parameters, push the MODE button until the following massages are displayed on the LCD screen : " QUITTING PROGRAMME " " PRESS ENTER " The transfer board shall quit the programming mode if you push ENTER after these massages are displayed 413 Entering of Programme Parameters Via a Personal Computer (PC) The Personal Computer and the Automatic Transfer Unit starts to communicate after the serial communication ports (RS 232) are connected and the EAOM-10EXE programme on the computer starts running When the programme starts running, the Automatic Transfer Unit's Observation Screen appears first The information included in the Observation Screen are as follows : 1-Mains, generator and battery voltages 2-Generator speed 3-Relay positions 4-Failure information Via the F2 button appearing at the bottom of the said screen enables the user to access the Programme Parameter Observation Screen This screen features the programme parameter values currently available on the Automatic Transfer Unit and display returns to Automatic Transfer Unit Observation Screen if the ESC button is pushed The F3 button appearing at the bottom line of the Automatic Transfer Unit Observation Screen serves to access the Programme Mode screen on which the programme parameters currently available on the Transfer Unit could be changed On this screen, the bar is moved onto the desired parameter Following the changing of the parameter value and pushing of the ENTER button, the same parameter value on the Automatic Transfer Unit shall also change and be stored Push the F2 button to return to the Automatic Transfer Unit Observation Screen Push the CTRL-Q to quit EAOM-10EXE Pages 5 / 10
42 EXPLANITION OF PROGRAMME PARAMETERS Parameter list and possible values PROG DEFINITION OF PARAMETER UNIT LOWER LIMIT DEFAULT NO UPPER LIMIT 0 MAINS VOLTAGE CONNECTING LIMIT VOLT 150-500 320 1 MAINS VOLTAGE DISCONNECTION LIMIT VOLT 150-500 300 2 MAINS VOLTAGE UPPER LIMIT VOLT 150-500 440 3 ALTERNATOR VOLTAGE LOWER LIMIT VOLT 150-500 300 4 ALTERNATOR VOLTAGE UPPER LIMIT VOLT 150-500 440 5 SPEED LOWER LIMIT Hz 300-750 470 6 SPEED UPPER LIMIT Hz 300-750 530 7 DELAY IN AVAILABILITY TRANSITION SECOND 0-10 0 8 DELAY IN STARTING SECOND 0-30 0 9 ALTERNATOR VOL FAULT CONTROL DELAY SECOND 0-10 8 A STARTING PERIOD SECOND 8-30 10 B DRAW-BACK PERIOD OF STOP MAGNET SECOND 0-30 10 C ENGINE COOLING TIME MINUTE 0-30 2 D MAINS TRANSITION DELAY MINUTE 0-30 2 E NUMBER OF STARTS No 1-10 3 F STOP / FUEL SELECTION STOP(St)/FUEL(yt) FUEL(yt) 0 RESERVE 1 ENGINE STARTED INFORMATION 0 CHARGE GENERATOR 1 SPEED 2 ALTERNATOR VOLTAGE 3 OIL PRESSURE 2 RESERVE FAILURE FUNCTIONAL SEL RESERVE-1 0 ONLY HORN TEMPORARY 1 ONLY HORN PERMANENT 2 GENERATOR CONT OFF 3 ENGINE STOP + GEN CONT OFF 3 RESERVE FAILURE FUNCTIONAL SEL RESERVE-2 0 ONLY HORN TEMPORARY 1 ONLY HORN PERMANENT 2 GENERATOR CONT OFF 3 ENGINE STOP + GEN CONT OFF 4 RESERVE FAILURE FUNCTIONAL SEL RESERVE-3 0 ONLY HORN TEMPORARY 1 ONLY HORN PERMANENT 2 GENERATOR CONT OFF 3 ENGINE STOP + GEN CONT OFF 5 RESERVE FAILURE OBSERVATION FUNC SEL CONTINUOUSLY OBSERVED FAILURE (YES) FAI OBSERVED WHILE THE ENG RUNNING (NO) 0 RESERVE 1 1 RESERVE 2 2 RESERVE 3 0-YES(E)/ 1-YES(E)/ 2-YES(E)/ 3-YES(E)/ 0-YES(E)/ 1-YES(E)/ 2-YES(E)/ 3-YES(E)/ 0-YES(E)/ 1-YES(E)/ 2-YES(E)/ 3-YES(E)/ 0-YES(E)/ 1-YES(E)/ 2-YES(E)/ 3-YES(E)/ 0-YES(E)/ 1-YES(E)/ 2-YES(E)/ YES(E) YES(E) 6 OPERATOR PASSWORD 0-999 0 7 TECHNICIAN PASSWORD 0-999 0 YES(E) YES(E) YES(E) Pages 6 / 10
- Delay in Starting: It is the period of time elapsing before starting the generator after the mains voltage is cut down The starting process shall start at the end of the said period This period of time can be deemed to be equal to 0 s in standard designs - No of Starting Attempts: The Automatic Transfer Unit repeats its starting attempts with predetermined intervals This parameter specifies the number of the said repetition before a failure is announced in case of a generator failure - Starting Period: This parameter specifies how long the starting process shall last In case the engine fails to start during the said period, then the starter is activated, the user waits for a period of time which is twice the starting period and this procedure is repeated until the "Engine Running" information is received In case the said information is received while the starter is activated, then the starter shall be deactivated - Draw-Back Period of Stop Magnet : In generators with stop solenoid, this parameter determines the draw back period of the stop solenoid necessary to stop the engine Normally, the engine running signals are expected to cease at the end of the said period This period serves only to certify that the engine has stopped in this kind of systems - Engine Cooling Period: It is the period of time during which the generator shall operate unloaded after the generator-load connection is severed - Delay in Mains Transition: In case the generator is engaged following a mains failure and the mains voltage becomes available again, then the Automatic Transfer Unit shall wait for a predetermined delay to make sure that the mains voltage is available before transferring the load to the mains The unit shall transfer the load to the mains at the end of the said period - Generator Voltage Fault Control Delay: This period shall be deemed to start following the receipt of the engine running information after the starter is activated This delay serves to make sure that any possible fluctuations in the generator voltage are terminated During this period, failures are watched and in case of any failure, the engine stopped by giving an alarm before transferring the load to the generator In case of no failures, the load shall be transferred to the generator at the end of the said period Here, the engine cooling period shall not be taken into account while stopping the engine - Stop/Fuel Solenoid Selection: Stop/Fuel solenoid is selected In case fuel solenoid is selected, then the fuel solenoid is provided with continuous energy to run the engine The fuel solenoid is de energised while stopping the engine In case stop solenoid is selected, then the solenoid shall be provided with energy while stopping the engine and only for a period of time equal to the Draw Back Period of Stop Magnet The Draw Back Period of Stop Magnet shall not be taken into account in systems with fuel solenoids - Selection of Systems to Receive the Engine Running Information: Signal inlets to receive the engine running information are as follows : 1-Charge Generator Inlet 2-Speed Information 3-Generator Voltage 4-Oil Pressure Inlet This parameter specifies the activated selection(s) - Operator Password: It is the password to be entered by the Operator to be able to change the predetermined and permitted programme parameters - Technician Password: It is the password to be entered by the Technician to be able to change the entire programme parameters Pages 7 / 10
5 OBSERVATION OF VOLTAGE AND SPEED INFORMATION 51 OBSERVATION OF MAINS VOLTAGE The mains voltage is observed in the window intervals constituted by the Mains Opening, Mains Cutting, and Mains Upper Limit parameters No Mains Mains Upper Limit Mains Available Mains Opening Limit Mains Undecided Mains Cutting Limit No Mains In case the mains voltage is higher than the upper limit or lower than the cutting limit, then no mains information shall be received In case the mains voltage is within the upper limit and opening limit, then mains available information shall be received In case the said voltage is within the opening and cutting limit, either no mains or mains available information shall be received depending upon the previous position The led indicator on the Mimic Diagram indicates whether the generator voltage is available or not 52 OBSERVATION OF THE GENERATOR VOLTAGE In case the mains voltage is within the predetermined upper and lower than the limits, then no mains information shall be received In case the voltage is beyond the said limits, then mains available information shall be received The led indicator on the Mimic Diagram indicates whether the generator voltage is available or not 53 OBSERVATION OF GENERATOR SPEED In case the generator speed is within the predetermined upper and lower limits, then the speed shall be considered normal In case it is beyond the said limits, then an High/Low Speed Failure shall incur Pages 8 / 10
Pages 9 / 10
6 CALIBRATION AND SETTINGS The mains and generator voltages are calibrated via the calibration trimmer on EAOM-102 here, calibration is aimed at making the values displayed on the transfer board equal to the actual voltage values read by means of voltage values The 12/24 VDC battery voltage is selected by means of the switch on the EAOM-102 61 CALIBRATION OF THE MAINS VOLTAGE Make the displayed voltage values equal to the voltage values obtained by means of already calibrated measuring device with the help of a calibration trimmer This process is performed separately for phases R, S, T of the mains The phases are measured according to the Neutral 62 CALIBRATION OF THE GENERATOR VOLTAGE Make the displayed voltage values equal to the voltage values obtained by means of already calibrated measuring device with the help of a calibration trimmer Pages 10 / 10