海德堡主电机控制说明

Direct-current main drive Control overviewThe d.c. main motor is controlled by the power converter board SRK via the converter power part SLT.The power converter board SRK regulates the armature and field circuits as specified by the processor board REK1 (setpoint values).Controlled by the power converter board SRK the converter power part SLT generates the control signals for the field and armature windings of the d.c. main motor. In addition the SLT records the armature and field currents as well as the mains,armature and field voltages. These current and voltage values are then used for drive control.On the basis of the setpoint values from thecontrol electronics (REK1, REK2, REK386, ESK,SAK, SAK2) the brake control module BAM is controlled via the EAK2. The BAM then switches the motor brake in accordance with the setpoint values from the control electronics.Via the encoder IDS the control electronics (REK1, REK2, REK386 ESK, SAK, SAK2)receives information on the current press speed and direction of rotation.Code resistors are assigned to the converter power part SLT and the main motor. The power converter board SRK monitors these code resistors and thus whether the correct drive components are connected.Direct-current main drive Control overviewCross-section of direct-current main motor Layout1Coil former for field winding (north)2Coil former for field winding (south)3Armature4Armature windings with the different conduc-tion directions5Motor shaft6Motor casingConverter power part SLTThe converter power part SLT supplies the main motor with current. The SLT consists of the two power bridge modules SBM1 and SBM2. The field supply is effected by the SVT. SBM1 and SBM2 are responsible for the power supply of the armature circuit.Schematic representation of power converter power electronicsDirect-current main drive Control overviewDirect-current main drive Control overview Block diagram of componentsBlock diagram of components of direct-current main drivePower choke 15L1The power choke is in series with the converter power part SLT in order to prevent system perturbations which can be caused by switching the thyristors of the converter power part.Fuses 15F1These fuses are the main fuses of the main drive. They are connected in series with the converter power part.Converter power part SLTOn the basis of the instructions received from the control electronics, the converter power part controls the main motor via thyristors. For the generation of the voltages for the internal electronics and the field voltage, the SLT receives DC 120V from the rectifier module GRM120. Fuses 15F2These fuses protect the armature circuit of the main motor.Direct-current main motor M1The main motor M1 is a d.c. shunt motor. The armature and field windings are supplied with current by the converter power part SLT. The field winding is supplied with a clocked direct voltage. The armature winding receives a regulated positive or negative direct voltage from the SLT. The main motor also contains the brake and the brush control monitoring carbon brush wear. Code resistances allocated to the motor are read by the control electronics via the interference suppressor module ESM.Control transformer 15T1From the mains voltage, the control transformer generates the individual voltages for the printing press. For the main drive control, the control transformer supplies the rectifier modules–GRM24 with 3xAC26V,–GRM48 with 3x AC37V,–GRM120 with 3x AC90V.Rectifier module GRM24From the 3x AC26V it receives, the rectifier module GRM24 generates a direct voltage of DC +24V for the control electronics.Rectifier module GRM48From the 3x AC37V it receives, the rectifier module GRM48 generates a direct voltage of DC +48V for the brake control module BAM.Rectifier module GRM120From the 3x AC90V it receives, the rectifier module GRM120 generates a direct voltage of DC +120V. This output voltage is supplied to the converter power part (voltages for the electronics, field voltage).Contactor K48AWhen the press is ready to run, the contactor K48A is controlled and passes the supply voltage from the GRM120 on to the converter power part SLT. In the case of a malfunction, the contactor, which is controlled by the control electronics, cuts off the power supply to the SLT and thus shuts down the main drive.Brake control module BAMThe brake control module BAM receives DC +48V from the GRM48 and actuates the motor brake on the basis of the instructions received from the control electronics.Interference suppressor module ESMWith the help of the interference suppressor module ESM, the control electronics reads and monitors the code values which identify the motor. Optocoupler module 15U5The optocoupler module monitors carbon brush wear.Encoder IDSThe encoder IDS informs the control electronics about the present press speed and direction of rotation.Direct-current main drive Control overviewDirect-current main drive Control overview Functional relationships of the control electronicsBlock diagram of control electronicsComponents of the control electronicsThe following electronic boards are directly involved in control of the main motor:–Processor board REK1–Power converter board SRK–Input/output board EAK2–Input/output control board ESK–Memory analog board SAK/SAK2–Safety input board SEKThe processor boards REK2 and REK386 are at a higher level than the electronic boards mentioned above. In the case of a fault, the REK2/REK386 intervenes in press control to ensure the safety of the machine.Power converter board SRK and processor board REK1During the initialization of the press, the power converter board SRK carries out a self-test and then checks the converter power part SLT, the main motor and the connecting cables. Any faults which occur are stored and indicated in the control console display ZID.After conclusion of the test, the REK1 outputs an enable signal for the power converter control. Based on the reference values supplied by the REK1, the SRK regulates the armature and field circuits. The SRK receives the actual values for closed-loop control from measuring devices on the converter power part SLT. If REK1 detects deviations from the reference values, the SRK receives new values and the deviations are corrected.Input/output board EAK2The input signals required to control the main motor are transmitted to the processor boardREK2/REK386 via the EAK2 and the ESK. The output signals reach the corresponding compo-nents in reverse direction.Inputs:– carbon brush monitoring, Outputs:– brake control,– field voltage interruption.Input/output control board ESKVia the ESK, the signals from the encoder IDS are transmitted to the processor board REK1. Thus REK1 receives information about the speed and direction of rotation of the printing press.Memory analog board SAK/SAK2All drive parameters which are determined are stored on the memory analog board SAK/SAK2. At certain intervals, these parameters are checked and, if necessary, restored on the SAK/SAK2. Apart from this, the SAK/SAK2 monitors the motor code.Safety input board SEKIn the case of an emergency stop, the safety input board SEK passes an emergency stop signal directly to the power converter board SRK. The SRK then decelerates the main motor down to standstill, irrespective of the state of the press.Direct-current main drive Control overviewThe converter power part SLT consists of the following components:–connecting part of the power converter SVT,–power bridge modules SBM1/SBM2.Connecting part of the power converter SVT The connecting part of the power converter is the link between the main motor and the power bridge modules and between the power converter board and the power bridge modules.The SVT is above all equipped with measuring devices which determine the armature and field currents and the mains, field and armature voltages. The measured current andvoltage values are used for closed-loop drive control.A power supply unit on the SVT generates thevoltages for the internal electronics of the SVT from the 120V DC of the GRM120. Apart from this, the 120V DC serve to generate the field supply for the main motor.Controlled by the power converter board SRK, the SVT generates the firing pulses for the thyristors on the bridge modules SBM1/2.Power bridge modules SBM1/SBM2SBM1 and SBM2 are of identical design and each contains the thyristors for controlling the armature winding of the main motor for positive and negative current direction. Thus the function of the SBM varies depending on the module slot.The SBM in slot 1 is responsible for:crawl speed, inching forward, run and braking while inching backward.The SBM in slot 2 is responsible for:inching backward, braking at crawl speed,inching forward and run.The SBMs also contain a power code and atemperature sensor. The code enables the power converter board to identify the power variant of the bridge module. With the help of the temperature sensor, the power converter board can measure the current temperature on each SBM. Thusexcessive temperature (e.g. due to overload) or an incorrect code can be detected and the power converter board SRK can be informed accordingly via the SVT.Converter power part SLTConverter power part SLTDirect-current main drive Control overviewLayout1Power bridge module SBM12Power bridge module SBM23Supporting element of the power con-verter4Connecting part of the power converter SVT5X16; plug connection to main motor 6X15; plug connection to GRM1207A2; armature circuit main motor (–)8Connection mains voltage; L1, L2, L3;380–415V, 3 , 50/60Hz; clockwise rotating field9A1; armature circuit main motor (+)ßX9; plug connection to SRKSLT Converter power partNote:The PE conductor is connected on the reverse sideof the SLT.Pin assignmentX15Plug connection to GRM 120Function ă 120V DC + 120VPin 1, 25, 6X16Plug connection to main motorFunction F1 (+)F2 (–)Pin 1, 25, 6Direct-current main drive SLT Converter power partRemoval/installationConverter power part SLT1Connector SVT-X92Connections armature circuit and mains voltage3Connector SVT-X154Connector SVT-X165Fixing bolts for SLTRemoval:1Turn off the main switch at the central control cabinet ZSG and make sure no-one can turn the power back on.2Remove the protective cover (plexiglass) over the SLT.3Remove the following connections:Note:Mark the cables to ensure they are not mixed up later on.–SVT-X15 3–SVT-X16 4–terminals A1, L1, L2, L3and A2 2–SVT-X9 1–PE conductor on the reverse side of the SLT.4Loosen the 4 fixing bolts 5 of the SLT at the front. While doing this, safeguard the SLT from falling out at the back.Installation:5Insert the SLT and fix it with the 4 fixing bolts 5.Note:When using an SLT of lower or higher rating,do observe the instructions on the next page!6Re-establish all connections and put the protective cover back in place.Direct-current main drive SLT Converter power partCase 1: One power bridge module SBM isdefective. There is no spare SBM.In this case, put the SBM which functions in slot SBM1. This ensures the operating modes ”Crawl speed”, ”Inching forward” and ”Run”. ”Inching backward” and electric deceleration are notpossible. The press is stopped by the mechanical brake.Case 2: One power bridge module SBM isdefective. An SBM of lower or higher rating is available.In this case, put the SBM which functions in slot SBM1 and the SBM of lower or higher rating in slot SBM2. Thus all press functions are main-tained. An SBM with lower rating, however,reduces the braking power of the power converter.Case 3: Both power bridge modules SBM aredefective. Power bridge modules oflower rating are available.The power bridge modules with lower rating can be used. Thus all press functions are maintained,but the driving and braking power of the main drive are reduced.Case 4: Both power bridge modules SBM aredefective. Power bridge modules of higher rating are available.The power bridge modules with higher rating can be used. Thus all press functions are maintained.Note:If a 220A power bridge module SBM is used on a printing press with a software version below 006 (on REK1/2 and DSK), the maximum armature current is limited to approx. 130A.Emergency measures for defective power bridge modules Direct-current main drive SLT Converter power partRemoval/installation of a power bridge module SBM1Fixing bolts of SBM 2Connectors X1, X2Removal:1Turn off the main switch at the central control cabinet ZSG and make sure no-one can turn the power back on.2Remove the protective cover (plexiglass)over the SLT.3Loosen the connector 2 of the power bridge module to be replaced on the connecting part of the power converter SVT.4Alternately and evenly loosen the 2 fixing bolts 1 of the SBM. Thus the contact blades are withdrawn from the contacts of theconnecting part of the power converter SVT.5Take out the SBM by the handle.1Fixing bolts of SBM 2Contact blade 3Connectors X1, X24Handle of SBMInstallation:6Insert the SBM and alternately and evenly screw in the 2 fixing bolts 1. The contactblades are thus pressed into the receptacles in parallel.Note:When using an SBM of lower or higher rating,do observe the instructions on the previous page!7Reconnect the connector 3 of the SBM to the SVT and put the protective cover back in place.Side view of SBMConverter power part SLTDirect-current main drive SLT Converter power partRemoval/installation of the connecting part of the power converter SVTConnecting part of power converter SVT from ABB1Fixing bolts of SVT 2Connector X93Connector X154Connector X16Note:Before removing the connecting part of the power converter SVT, both power bridge modules SBM1/2 must be removed.Removal:1Turn off the main switch at the central control cabinet ZSG and make sure no-one can turn the power back on.2Remove the power bridge modules SBM1/2.3Undo the following connections on the SVT:-X15 3,-X16 4,-X9 2.4Alternately and evenly unscrew the 4 fixing bolts 1 of the SVT and remove the SVT.Installation:5Insert the SVT and alternately and evenly screw in the 4 fixing bolts 1.6Reconnect all connectors and put both power bridge modules SBM back in place.Direct-current main drive SLT Converter power partSRK Power converter board LayoutPower converter board SRK (ABB)1Red LED2Connector X20;connection to the connecting part of the power converter SVT (X9) via thebackplane of the computer plug-in unit RER (X1)3Connector X10;connection to REK1, REK2, SAK, ESK and SEK via the backplane of the computer plug-in unit RERFunctionThe power converter board SRK belongs to the d.c. main drive function group. The board isintegrated in the computer plug-in unit REE. The SRK which is subordinate to the processor board REK1 controls the main drive. The signals of the SRK are transmitted via the backplane of the computer plug-in unit RER.The power converter board SRK is in thecomputer plug-in unit REE.Direct-current main drive SRK Power converter boardBAM Brake control module LayoutBrake control module BAM1Heat sink2X1 Pin base (underneath the heat sinks);plug connection to main motor and EAK 3Fuse F1, 8A, slow-blowing4X2 Socket base; plug connection to safety input board SEK (currently not in use)FunctionThe brake control module BAM is used for d.c.main drives with holding brake. The BAM converts the signals from the control electronics of the main drive into potential-free control signals.When brake control has been enabled, the brake is first overexcited with DC 48V and is then, after 1s, subject to clocked control. The relay on the BAM serves as make-contact and for rapid shutdown.Note:The BAM comprises further functions which are not used at the moment.On the BAM the clocked control voltage can be monitored, and in the case of a fault a fault signal can be generated. This fault signal is transmitted to the safety input board SEK. Ten seconds after the fault message has been generated, an emer-gency stop will occur. The relay cuts off the power supply to the brake and the brake is applied.Direct-current main drive BAM Brake control modulePin assignmentPin base X1, 10-poleX1Plug connection to motorFunction DC + 48V Brake –Brake +ă 48V1st control signal (DC +12 to 24V)1st control signal (ă 12 to 24V)2nd control signal (DC +12 to 24V)2nd control signal (ă 12 to 24V)Pin 12, 34, 5678910Socket base X2, 2-poleDirect-current main driveBAM Brake control moduleESM Interference suppressor module LayoutInterference suppressor module ESM1Pin base X1; plug connection to RER (RER-XU1)2Interference suppressor module ESM 3Terminal strip X2; connections to main motor (M1-X2)FunctionPin assignmentX1Plug connection to RER (XU1)Function DC +10V ă10VPin 12Pin base X1, 6-poleX2Terminal connection to main motor (M1-X2)Function DC + 10V ă10VTerminal 43The interference suppressor module ESM is a filter which compensates for interferenceoccurring during the main motor code acquisition.Direct-current main drive ESM Interference suppressor module15U5 Optocoupler module FunctionOptocoupler module 15U515U5 Terminal assignment of the optocoupler module Function AC 220V AC 220V DC+24V (NTK24)Signal via FEM to EAK2_15Terminal 1234Terminal assignmentThe optocoupler module 15U5 receives theAC 220V signal from carbon brush monitoring (main drive with shunt motor with brushes). The optocoup-ler converts the AC 220V signal into an isolated DC 24V signal which is then transmitted to the input/output board EAK2_15 (central control cabinet) via the flat-cable input module FEM.Direct–current main drive15U5 Optocoupler module。