GE AF-650 GP Series Скачать руководство пользователя страница 42 | Manualshive

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3.3.4 Brake Option

For frequency converters equipped with the dynamic brake option, two brake IGBTs along with terminals 81(R-) and 82(R+) are included in each inverter module
for connecting an external brake resistor(s).

The function of the brake IGBT (see Illustration

Brake Option

) is to limit the voltage in the intermediate circuit, whenever the maximum voltage limit is exceeded.

It does this by switching the externally mounted resistor across the DC bus to remove excess DC voltage present on the bus capacitors. Excess DC bus voltage is
generally a result of an overhauling load causing regenerative energy to be returned to the DC bus. This occurs, for example, when the load drives the motor
causing the voltage to return to the DC bus circuit.

Placing the brake resistor externally has the advantages of selecting the resistor based on application need, dissipating the energy outside of the Keypad, and
protecting the frequency converter from overheating if the brake resistor is overloaded.

The Brake IGBT gate signal originates on the control card and is delivered to the brake IGBTs via the MDCIC to each inverter module power card and gate drive
card. Additionally, the power and control cards monitor the brake IGBT and brake resistor connection for short circuits and overloads.

High Power Service Manual for Unit Sizes 6x

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Содержание AF-650 GP Series

Страница 1: ...GE AF 650 GP AF 600 FPTM High Power Service Manual Unit Sizes 6x Operating Instructions AF 650 GP AF 600 FP TM High Power Service Manual Unit Sizes 6x DET 712...

Страница 2: ...ogramming Through the Keypad 15 Keypad 15 Display Area 16 Menu Keys 16 Navigation Keys 17 Controller Operation Keys 17 Tips and Tricks 18 Status Messages 20 Service Functions 24 Frequency Converter In...

Страница 3: ...er Repair Tests 60 5 Frequency Converter and Motor Applications 61 Torque Limit Current Limit and Unstable Motor Operation 61 Overvoltage Trips 62 Mains Phase Loss Trips 62 Control Logic Problems 63 P...

Страница 4: ...Sensor Test 89 Testing Current Feedback with the Signal Test Board 90 Input Terminal Signal Test 91 Module level Static Test Procedures 93 Inverter Module 93 Rectifier Module 93 After Repair Drive Te...

Страница 5: ...Optional 117 IGBT Module 118 9 Disassembly Assembly Rectifier Module 121 For Your Safety 121 GE Training Required 121 Rectifier Module 121 Internal Access 121 Power Card 122 Power Card Mounting Plate...

Страница 6: ...capable of operating a great variety of applications and incorporate a wide range of control and communication options These models are available in NEMA 1 IP21 or NEMA 12 IP54 enclosures 1 3 For Your...

Страница 7: ...480 VAC AF 650 GP 380 480 VAC Power kW 400 VAC HP 460 VAC Unit Size 450 500 600 650 61 63 500 560 650 750 61 63 560 630 750 900 62 64 630 710 900 1000 62 64 710 800 1000 1200 62 64 800 1000 1200 1350...

Страница 8: ...37 924 1100 Nominal kVA 500 V 632 675 771 909 1005 1195 Typical shaft output kW 400 V 450 500 560 630 710 800 HP 460 V 600 650 750 900 1000 1200 kW 500 V 530 560 630 710 800 1000 400V Power loss Light...

Страница 9: ...1 1056 1255 Nominal kVA 690 V 753 872 1016 1129 1267 1506 Typical shaft output kW 550 V 500 560 670 750 850 1000 HP 575 V 650 750 950 1050 1150 1350 kW 690 V 630 710 800 900 1000 1200 600V Power loss...

Страница 10: ...Ratchet Hex wrench set Screwdrivers Standard and Philips Additional Tools Recommended for Testing Digital volt ohmmeter must be rated for 1200 VDC for 690 V units Analog voltmeter Oscilloscope Clamp...

Страница 11: ...e similar 1 DC link inductor 9 Module heatsink fan 2 Fan transformer 10 Fan door cover 3 DC bus bar 11 Optional brake output bus bar 4 DC bus bar 12 Motor output bus bar 5 Mounting bracket 13 SMPS fus...

Страница 12: ...plate 7 High frequency board 2 Inverter power card 8 IGBT module 3 Panel connectors 9 Current sensor 4 SMPS fuse and fan fuse 10 Fan assembly 5 Upper capacitor bank assembly 11 Lower capacitor bank a...

Страница 13: ...d on vertical strut 2 DC bus bar 8 Module heatsink fan 3 SMPS fuse 9 Fan door cover 4 Optional back AC fuse mounting bracket T 10 SMPS fuse 5 Optional middle AC fuse mounting bracket S 11 Power card 6...

Страница 14: ...over plate 7 Soft charge cards 2 Power card 8 Soft charge card mounting plate 3 Panel connectors 9 SCR module 4 SMPS fuse 10 Fan assembly 5 Power card mounting plate flange 11 Diode module 6 Power car...

Страница 15: ...4 5 130BX334 11 Option cabinet exploded view 1 Contactor 4 Circuit breaker or disconnect 2 RFI filter 5 AC mains line fuses 3 Mains AC power input terminals High Power Service Manual for Unit Sizes 6x...

Страница 16: ...faults outside of the frequencyconverter Thisservicemanualprovidestechniquesandtestprocedurestohelpisolateafaultconditionwhetherinthefrequencyconverterorelsewhere Familiarity with the information prov...

Страница 17: ...de and status messages appear on this line Illustration 2 2 Keypad Display Area 2 2 4 Menu Keys Menu keys are used for parameter set up toggling through status display modes during normal operation an...

Страница 18: ...hoice LED indicator lights The green ON LED is activated and display panel lit when the frequency converter receives power from mains voltage a DC bus terminal or an external 24 V supply When a pendin...

Страница 19: ...n cleared For an alarm trip power must be recycled to the controller before pressing the reset key The key can be Enabled 1 or Disabled 0 in par K 43 Reset Button on Keypad 2 2 7 Tips and Tricks For t...

Страница 20: ...31 Address Par O 32 Drive Port Baud Rate Par O 35 Minimum Response Delay Par O 36 Max Response Delay Par O 37 Maximum Inter Char Delay Par ID 00 Operating Hours to par ID 05 Over Volt s Par ID 20 Hist...

Страница 21: ...al preset references Local The reference is given via the Keypad Operation Status AC Brake AC Brake was selected in par B 10 Brake Function The motor is slowed down via the active down ramp and feeds...

Страница 22: ...is selected as a function for a digital input parameter group E The corresponding terminal is not active 3 The DC Brake is activated via serial communication DC Voltage U0 In par H 41 Motor Control Pr...

Страница 23: ...he mains supply to the frequency converter is cut off but the control card is still supplied with 24 V Pre magnetize Pre magnetization is selected in par H 80 Function at Stop A stop command e g Stop...

Страница 24: ...time has expired Start fwd rev Enable start forward and Enable start reverse were selected as functions for two different digital inputs parameter group E To start the motor a direction dependent sta...

Страница 25: ...y converter nameplate data The service information is ac cessed by displaying items in the frequency converter s ID parameter group Parameter settings are displayed by pressing the Main Menu key on th...

Страница 26: ...us A serial communication protocol supplies commands and references to the frequency converter can program the frequency converter and reads status data from the frequency converter The serial bus con...

Страница 27: ...The RS 485 serial communication connector is wired to terminals 68 and 69 Terminal 61 is common and may be used for terminating screens only when the control cable run between frequency converters not...

Страница 28: ...details on changing parameters and the functions available for each control terminal In addition the input terminal must be receiving a signal Confirm that the control and power sources are wired to...

Страница 29: ...alog and digital outputs for indicating values such as frequency reference current and torque The analog signal is 0 4 to 20 mA at a maximum of 500 The digital signal is 24 VDC at a minimum of 500 50...

Страница 30: ...ectricalnoisemayoccurthatcandisturbtheentiresystem Thiscanberesolved by fitting an equalizing cable next to the control cable Minimum cable cross section is 8 AWG 50 60 Hz earth loops When using very...

Страница 31: ...High Power Service Manual for Unit Sizes 6x 30 3...

Страница 32: ...ontrols the motor speed or maintains a constant speed as the load on the motor changes The frequency converter can also stop and start a motor without the mechanical stress associated with a line star...

Страница 33: ...ce between the frequency converter s internal digital logic and the operator All the frequency converter s programmable parameter settings can be uploaded into the EEPROM of the Keypad This function i...

Страница 34: ...r card provides conditioning of these signals Scaling of current feedback and voltage feedback is accomplished by the control card The power card contains a switch mode power supply SMPS which provide...

Страница 35: ...e DC bus and the other in the negative The coil reduces mains harmonics The DC bus capacitors are arranged into a capacitor bank along with bleeder and balancing circuitry Each inverter module contain...

Страница 36: ...ventually adding enough resistance to the circuit to prevent significant current flow This protects the soft charge resistor from damage along with any other components that could be damaged by contin...

Страница 37: ...L4 R1 SW1 RFI CARD BRAKE OPTION UDC UDC MK1 BRAKE GATE RES CARD GATE EM COL BRAKE IGBT EXT BRAKE R 82 81 R RESISTOR IGBT4 DC PCA9 62 DOOR FAN 1 1 3 2 3 2 CN4 GND FAN FAN 1 1 2 3 2 3 CN2 FU4 COM FAN T...

Страница 38: ...section is the high frequency HF filter card for each inverter module It contains a high frequency filter circuit to reduce naturally occurring currents in the HF range to prevent interference with ot...

Страница 39: ...Illustration 3 5 Intermediate and inverter sections High Power Service Manual for Unit Sizes 6x 38 3...

Страница 40: ...o see in an AC system The frequency of the waveform is then determined by the rate at which the pulses occur By employing a sophisticated control scheme the frequency converter is capable of deliverin...

Страница 41: ...Illustration 3 7 Inverter section High Power Service Manual for Unit Sizes 6x 40 3...

Страница 42: ...rhauling load causing regenerative energy to be returned to the DC bus This occurs for example when the load drives the motor causing the voltage to return to the DC bus circuit Placing the brake resi...

Страница 43: ...Illustration 3 8 Brake option High Power Service Manual for Unit Sizes 6x 42 3...

Страница 44: ...of 10 minutes 3 3 6 Fan Speed Control The cooling fans are controlled with sensor feedback which regulates fan operation and speed control as described below IGBT thermal sensor measured temperature...

Страница 45: ...n of an external temperature switch The input could be used to monitor the temperature of an external brake resistor Two input configurations are possible A normally closed switch may be connected bet...

Страница 46: ...nstruction and service manuals A thorough understanding of the unit is the best approach If ever in doubt consult the factory or authorized repair centre for assistance 4 2 Exterior Fault Troubleshoot...

Страница 47: ...or damaged power components or carbon deposits resulting from catastrophic component failure Check for cracks or breaks in the housings of power semiconductors or pieces of broken component housings...

Страница 48: ...trol wiring or a fault within the frequency converter itself The first step is to rule out a problem in the control wiring To do this disconnect all control wiring by unplugging the control terminal b...

Страница 49: ...but the reference speed command is zero or missing Check the control wiring to ensure that the proper reference signal is present at the frequency converter input terminals and that the unit is prope...

Страница 50: ...ameters including all motor compensation settings Slip Compensation Load Compensation etc For Closed Loop operation check PID settings Motor runs rough Possible over magnetization incorrect motor sett...

Страница 51: ...reason may be that its cause has not been rectified or the alarm is trip locked see also table on following page Alarms that are trip locked offer additional protection since the mains supply must be...

Страница 52: ...phase V missing X X X H 78 32 Motor phase W missing X X X H 78 33 Inrush fault X X 34 Network communication fault X X 36 Mains failure X X 37 Phase imbalance X 38 Internal fault X X 39 Heatsink sensor...

Страница 53: ...rupt X 82 CSIV parameter error X 90 Feedback Monitor X X EC 61 91 Analog input 54 wrong settings X 92 No Flow X X AP 2 93 Dry Pump X X AP 2 94 End of Curve X X AP 5 95 Broken Belt X X AP 6 96 Start De...

Страница 54: ...000 16384 Mains ph Loss Mains ph Loss Out of Speed Range 15 00008000 32768 Auto Tune Not OK No Motor OVC Active 16 00010000 65536 Live Zero Error Live Zero Error 17 00020000 131072 Internal Fault 10V...

Страница 55: ...The frequency converter is still active WARNING ALARM 7 DC over voltage If the intermediate circuit voltage exceeds the limit the frequency converter trips after a time Connect a brake resistor Exten...

Страница 56: ...inverterpeakcurrentlimit approx 200 oftheratedcurrent isexceeded Turn off the frequency converter and check if the motor shaft can be turned and if the motor size matches the frequency converter Troub...

Страница 57: ...or is short circuited ALARM WARNING 28 Brake check failed Brake resistor fault the brake resistor is not connected working ALARM 29 Heatsink temp The maximum temperature of the heatsink has been excee...

Страница 58: ...w 2821 Serial port overflow 2822 USB port overflow 2836 cfListMempool to small 3072 5122 Parameter value is outside its limits 5123 Option in slot A Hardware incompatible with Control board hardware 5...

Страница 59: ...activated To resume normal operation apply 24 V DC to terminal 37 then send a reset signal via Bus Digital I O or by pressing RE SET For correct and safe use of the Safe Stop function follow the relat...

Страница 60: ...ight inverter module in 61 or 63 drive 3 right inverter module in 62 or 64 drive 5 rectifier module ALARM 245 Heatsink sensor Thisalarmisonlyforunitsize6xfrequencyconverters ItisequivalenttoAlarm 39 T...

Страница 61: ...pin 4 This procedure must be performed on each inverter module Each waveform should approximate the illustration below 8 Connect a 24 VDC power supply to the DC bus of the drive This can be done on th...

Страница 62: ...t waveform in response to the changing demands of the application Par P 04 Auto Tune activates the automatic motor adaptation auto tune function When auto tune is performed the frequency converter mea...

Страница 63: ...y converter This will actually increase the rate of deceleration Less often is the case that the overvoltage condition is caused by the load while it is running at speed In this case the dynamic brake...

Страница 64: ...ter must be set up correctly for the motor s connected to it Parameters P 02 P 07 must have data from the motor nameplate entered into the frequency converter This enables the frequency converter proc...

Страница 65: ...ses Open Blown Fuses The drive contains fuses protecting internal circuits from excessive damage in the event of a component failure It must be emphasized that an open fuse is an indication of a probl...

Страница 66: ...ndication of a fraction of an amp is tolerable However that value should be considerably less than one amp If the display shows more than one amp of current there is a defective current sensor To dete...

Страница 67: ...the fixed DCbus voltagecreating a variable frequency variable voltage PWM waveform This high rate of voltage change dV dt is the primary source of the frequency converter generated EMI The high rate o...

Страница 68: ...verter s DC bus via the earth circuit and a high frequency HF bypass network within the frequency converter itself However imperfections in the frequency converter earthing or the equipment earth syst...

Страница 69: ...AC Line Drive Illustration 5 4 Alternate Signal Conductor Currents High frequency currents can be coupled into the mains supplying the frequency converter when the mains conductors are located close t...

Страница 70: ...ables A simple alternative is to twist the existing single conductors to provide a balanced capacitive and inductive coupling thus cancelling out differential mode interference While not as effective...

Страница 71: ...nded practices the closer an installation resembles this example the better immunity the network will have against EMI Should EMI problems arise in an installation refer to this example Attempt to rep...

Страница 72: ...blems can be diagnosed simply with these tests Static tests are performed with little or no disassembly Perform these tests on any unit suspected of containing faulty power components prior to applyin...

Страница 73: ...er and provides easy access to test points The test board plugs into the top of the modules Its use is described in the procedures where called out See Section 9 Signal Test Board for detailed pin des...

Страница 74: ...res described in this section in the order presented for best troubleshooting results Diode Drop A diode drop reading will vary depending on the model of ohmmeter Whatever the ohmmeter displays as a t...

Страница 75: ...eye bolts mounted on vertical strut 2 DC bus bar 8 Module heatsink fan 3 SMPS fuse 9 Fan door cover 4 Optional back AC fuse mounting bracket T 10 SMPS fuse 5 Optional middle AC fuse mounting bracket S...

Страница 76: ...2 Soft Charge and Rectifier Circuit Test Both the rectifier and soft charge circuits are tested simultaneously The soft charge circuit is made up of the soft charge rectifier fuses and the soft charg...

Страница 77: ...shorted or the SCRs are shorted in the SCR Diode module To isolate between SCRs or the soft charge rectifier internal module testing must be performed Main rectifier circuit test part III 1 Connect po...

Страница 78: ...nts in the module remove the bus bars as follows 1 If brake option is present remove 2 brake option jumpers bus bars from each module by removing attaching nut on each end of bus bar 2 Remove 3 motor...

Страница 79: ...n that inverter module Replace the IGBT module according to the disassembly instructions The inverter module must be removed to replace the IGBT module Inverter test part III 1 Connect the positive me...

Страница 80: ...acitance is charged within the frequency converter Brake IGBT test part II 1 Connect the positive meter lead to the brake resistor terminal R 81 2 Connect the negative meter lead to the brake resistor...

Страница 81: ...f different problems 1 Perform the Rectifier Module Soft Charge Fuse Test If any soft charge fuses are open replace the fuse and retest the fan continuity 2 Check the wire harness between the Rectifie...

Страница 82: ...net perform the Option Cabinet Door Fan test 3 If the above checks do not identify the problem remove the faulty Rectifier Module and check the connections between the connectors on the top of the mod...

Страница 83: ...module the various logic circuits can be tested without the danger of damaging the power components The other provides low voltage power to the DC capacitors and the output IGBTs for test purposes A...

Страница 84: ...age 6 3 4 Input Voltage Test 1 Apply power to drive 2 Use DVM to measure input line voltage between drive input terminals in turn L1 to L2 L1 to L3 L2 to L3 For 380 480 V drives all measurements must...

Страница 85: ...successful then continue Remember to check out the customer connections 2 Measure 10 V DC control voltage at terminal 50 with respect to terminal 55 Meter should read between 9 2 and 11 2 VDC An inco...

Страница 86: ...cate a possible problem with the mains supply to the frequency converter or a problem within the frequency converter itself One way to determine if the mains supply is at fault is to swap two of the i...

Страница 87: ...owing measurements require an oscilloscope with voltage and current probes Under normal operating conditions the waveform of a single phase of input AC voltage to the frequency converter appears as in...

Страница 88: ...rming a conclusion The current waveform will follow the voltage waveform If the voltage waveform is incorrect proceed to investigate the reason for the AC supply problem If the voltage waveform on all...

Страница 89: ...ignal test board Observe the waveform on terminals 25 30 in turn Each reading should appear similar to the figure shown 7 Repeat this procedure for each inverter module Incorrect reading If one or mor...

Страница 90: ...tizing DC hold DC brake or other parameter setups are disabled that create a holding torque while at zero speed Current displayed will exceed 1 to 2 amps if such parameters are not disabled 3 Run driv...

Страница 91: ...e 5 Using a DVM connect negative meter lead to terminal 4 common of signal test board 6 Run drive with a zero speed reference 7 In turn measure AC voltage at terminals 1 2 and 3 of signal test board T...

Страница 92: ...read between 21 and 27 VDC If the 24 V supply voltage is not present conduct the Control Card Test 6 3 17 later in this section If the 24 V is present proceed with checking the individual inputs as f...

Страница 93: ...dividual inputs as follows 2 Connect negative meter lead to reference terminal 55 3 Connect positive meter lead to desired terminal 53 54 or 60 For analog input terminals 53 and 54 a DC voltage betwee...

Страница 94: ...1 Use ohmmeter set to read 2 Unplug connector MK103 on power card and measure across cable leads The full range of the sensor is 787 to 10K where 10K equals 25 C and 787 equals 95 C The higher the tem...

Страница 95: ...T in sequence Each reading should show open Incorrect Reading An incorrect reading here indicates the soft charge rectifier is faulty The rectifier is not serviced as a component Replace the entire so...

Страница 96: ...renced to pin 4 This procedure must be performed on each inverter module Each waveform should approximate the illustration below 8 Connect a 24 VDC power supply to the DC bus of the drive This can be...

Страница 97: ...High Power Service Manual for Unit Sizes 6x 96 7...

Страница 98: ...y Voltages so low that they cannot be felt seen or heard can be harmful to electronic components Use standard ESD protective procedures whenever handling ESD sensitive components Failure to conform to...

Страница 99: ...yle ammeter Test cable p n 6KAF6H8439 Signal test board p n 6KAF6H8437 Power supply 610 800 VDC 250 mA to supply external power to 4 power cards and the control card Power supply 24 VDC 2 A for extern...

Страница 100: ...d in the back needs to be replaced remove front and middle fuses to gain access to the back fuse If additional access is necessary the left most inverter module can be removed from the inverter cabine...

Страница 101: ...verter cabinet to gain access 2 Remove bus bars securing top of fuses by removing attaching bolts 8mm 3 Remove bolts securing bottom of fuses 8mm 2 3 1 4 5 1 Top DC link fuse bus bar 4 DC link fuse 2...

Страница 102: ...an is installed with the printed arrow on the fan pointing inward Incorrect installation can cause excess heating and an overtemperature fault Tighten nuts to 20 in lbs 2 3 Nm 7 2 4 Heatsink Fans 1 Re...

Страница 103: ...e rectifier unit not shown 7 Remove two nuts M6 from bracket at back of rectifier securing module to cabinet NOTE Four eye bolts and washers are stored at left bottom side of rectifier cabinet for use...

Страница 104: ...are stored at left bottom side or inverter cabinet for use in lifting inverter If desired attach bolts to holes provided at top of inverter module Module weighs approx 136 kg 300 lbs 7 Remove 2 nuts M...

Страница 105: ...s left most 6 pin connector on MDCIC board Remove rectifier control cable from MDCIC board 5 Remove relay connector from MDCIC panel 6 Remove any customer interconnect wiring 7 Remove MDCIC panel by r...

Страница 106: ...nector from fan transformer 3 Remove nut M8 from center of fan transformer securing transformer to panel Reinstall fan transformer in reverse order of this procedure 1 2 3 130BX255 10 1 Fan transforme...

Страница 107: ...nted to by removing screw 8mm from each mounting bracket 4 Remove remaining short bus bars attached to angle bracket bus bars by removing two 8mm screws from each bus bar 5 Note that DC link reactors...

Страница 108: ...1 2 2 2 2 3 3 4 4 130BX254 10 1 DC link inductor step 5 3 Short bus bars step 4 2 Mounting bracket bus bar step 3 4 Angle bracket bus bar not removed High Power Service Manual for Unit Sizes 6x 107 7...

Страница 109: ...bles 5 Note position of rectifier control cable MK101 connected to left 6 pin connector for reassembly Disconnect rectifier control cable NOTE Scaling card one on each module must be retained to reins...

Страница 110: ...ver step 3 5 MDCIC mounting panel 2 Scaling card step 5 6 Ribbon cable step 4 3 MK101 connector step 5 7 Left side ribbon cable step 2 4 MDCIC board attaching screw step 6 High Power Service Manual fo...

Страница 111: ...High Power Service Manual for Unit Sizes 6x 110 8...

Страница 112: ...ork conducted by non certified technicians can result in personal injury or equipment damage 8 2 Inverter Module 8 2 1 Inverter Module Exploded View 1 2 3 4 5 6 7 8 9 10 11 12 1 Right side cover plate...

Страница 113: ...d MK105 on power card 2 Disconnect cable from MK107 on power card 3 Remove two red wires from 15A fuse block attached to cover plate flange 4 Free cable entirely with the 2 red wires attached to it by...

Страница 114: ...r and lower capacitor banks 3 Remove four retaining nuts 10mm securing capacitor bank assembly 4 NOTE Capacitor bank assembly may weigh up to 9 kg 20 lbs Remove capacitor bank assembly Reassembly is d...

Страница 115: ...or MK100 on high frequency board 3 Remove two screws T25 from high frequency board 4 Remove one nut 8mm from high frequency board standoff and remove board Reassembly is done in reverse order 1 2 3 13...

Страница 116: ...brake option MK105 2 Remove gate drive card by removing 6 mounting screws T25 from standoffs Reinstall in reverse order of this procedure Tighten mounting screws to 2 3 Nm 20 in lbs 1 2 3 4 5 6 130BX2...

Страница 117: ...ed to output bus bar 5 Unplug wire from current sensor not shown 6 Remove two screws 7mm attaching base of current sensor to back panel 7 Remove bus bar and slide current sensor free from bus bar 8 Fo...

Страница 118: ...om connector on each of the two brake IGBT modules 4 Remove bus bar attached to left side of panel and to left most brake IGBT by removing two nuts at each end of bus bar 5 Remove jumper bus bar betwe...

Страница 119: ...BT is present remove the two screws T30 connecting the IGBT Ind bus bar assembly to each brake IGBT module 6 Remove nine snubber capacitors by removing two screws T30 for from each capacitor 7 Remove...

Страница 120: ...IGBT module step 10 4 Snubber capacitor step 6 2 High frequency board step 2 5 IGBT capacitor bus bar step 7 3 IGBT Ind bus bar assembly steps 5 and 9 6 Current sensor step 3 High Power Service Manua...

Страница 121: ...High Power Service Manual for Unit Sizes 6x 120 9...

Страница 122: ...n are intended for GE qualified technicians Repair work conducted by non certified technicians can result in personal injury or equipment damage 9 2 Rectifier Module 9 2 1 Internal Access 1 Remove rec...

Страница 123: ...heet behind power card can be left in place Ensure its is in place for reassembly NOTE Power card may remain installed if power card mounting plate is being removed to access soft charge boards Discon...

Страница 124: ...rom back side of flange 4 Remove power card mounting plate by removing four retaining nuts 8mm securing plate NOTE At this point soft charge cards are accessible for changing fuses Two soft charge car...

Страница 125: ...card from mounting plate by removing four screws T25 fastening card to mounting plate Note insulation sheet below soft charge card Remove and keep the insulation sheet for reinstallation Reinstall in...

Страница 126: ...ge cards for units with three inverter modules 3 Disconnect MK3 and MK4 from each soft charge card 4 Remove soft charge card mounting plate by removing four nuts 8mm attaching mounting plate Soft char...

Страница 127: ...nted on side panel one on each side for units with two inductors an additional one for units with three inverters 4 Loosen bottom 8mm nut 5 Remove top 8mm nut to remove soft charge resistor Reinstall...

Страница 128: ...Remove six nuts 13mm two from each SCR module on DC bus bar 4 Remove two nuts 17mm DC bus bar and remove DC bus bar 5 Remove six nuts 13mm two from each SCR module from AC input bus bar 6 If removing...

Страница 129: ...on AC input side and one on DC side of module 4 Remove diode module by removing four retaining screws T30 and washers from corners of module Reassembly 1 Replace diode module in accordance with instr...

Страница 130: ...ltage power for the SMPS By powering only the SMPS in each module the various logic circuits can be tested without the danger of damaging the power components The other provides low voltage power to t...

Страница 131: ...tables on the following pages list the pins located on the signal test board For each pin its function description and voltage levels are provided Details on performing tests using the test fixture a...

Страница 132: ...abled 0 VDC SCRs enabled 8 RL1 Control Card signal Signal from Control Card to provide status of Relay 01 0 VDC Relay active 0 7 VDC inactive 9 Not used 10 Not used 11 VPOS 18 VDC regulated sup ply 16...

Страница 133: ...ply 4 75 to 5 25 VDC 25 GUP_T IGBT gate signal buf fered U phase positive Signal originates on Control Card 2v div 100us div Run 10Hz 2 2 2 5 VDC Equal on all phases TP25 TP30 26 GUN_T IGBT gate signa...

Страница 134: ...11 Block Diagrams High Power Service Manual for Unit Sizes 6x 133 11...

Страница 135: ...Illustration 11 1 Unit Size 6x drive Top Level Block Diagram High Power Service Manual for Unit Sizes 6x 134 11...

Страница 136: ...nt Connector 44 pin Panel Mount Connector 3 10 11 1 8 5 7 6 5 7 3 10 11 14 PIN 8 MK112 RELAY AUX 2 NC NO C 2 3 1 NC NO C RELAY AUX 1 6 5 4 8 7 6 11 10 9 8 PIN 5 1 5 8 8 4 4 1 12 PIN BLK RED WHT BLK RE...

Страница 137: ...GUP2 GLO2 ELO1 EUP1 GLO1 GUP1 MK100 U 8 5 1 4 ELO3 GUP3 CUP3 EUP3 GLO3 NTC OUT IN NTC2 NTC1 MK103 NTC 1 2 3 CUP1 GUP1 EUP1 GLO1 ELO1 CUP2 GUP2 EUP2 GLO2 ELO2 CUP3 GUP3 EUP3 GLO3 ELO3 CUP1 GUP1 EUP1 G...

Страница 138: ...information be desired or should particular problems arise which are not covered sufficiently for the purchaser s purposes the matter should be referred to the GE company AF 650 GP and AF 600 FP are t...

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