Movements Along Positive Values of Y Axis of Delta Goes Extremely Slow

I am testing my newly built delta printer and have a problem I have no idea of what is wrong.

When I test motion along the X axis ( G0 Xnnnn commands ) with Y at zero, motion is great with positive and negative values to the defined +- limits.

When I test motion along the Y axis ( Go Ynnnn commands) with X at zero, motion is great with negative values but progressively slower as the values become more positive. Go back toward 0, motion speeds up and becomes normal.

All the mechanical portions work fine, nothing is binding, not a mechanical issue.

I would appreciate any thoughts, I am completely lost.

Thank you.


/* Below you will find the configuration string, that created this Configuration.h

========== Start configuration string ==========
{
    "editMode": 0,
    "processor": 1,
    "baudrate": 115200,
    "bluetoothSerial": -1,
    "bluetoothBaudrate": 115200,
    "xStepsPerMM": 50,
    "yStepsPerMM": 50,
    "zStepsPerMM": 50,
    "xInvert": "0",
    "x2Invert": 0,
    "xInvertEnable": 0,
    "eepromMode": 0,
    "yInvert": 0,
    "y2Invert": 0,
    "yInvertEnable": 0,
    "zInvert": 0,
    "z2Invert": 0,
    "z3Invert": 0,
    "z4Invert": 0,
    "zInvertEnable": 0,
    "extruder": [],
    "uiLanguage": 0,
    "uiController": 0,
    "xMinEndstop": 0,
    "yMinEndstop": 0,
    "zMinEndstop": 0,
    "xMaxEndstop": 2,
    "yMaxEndstop": 2,
    "zMaxEndstop": 2,
    "x2MinEndstop": 0,
    "y2MinEndstop": 0,
    "x2MaxEndstop": 0,
    "y2MaxEndstop": 0,
    "motherboard": 402,
    "driveSystem": 3,
    "xMaxSpeed": 300,
    "xHomingSpeed": 80,
    "xTravelAcceleration": 1000,
    "xPrintAcceleration": 1000,
    "yMaxSpeed": 300,
    "yHomingSpeed": 80,
    "yTravelAcceleration": 1000,
    "yPrintAcceleration": 1000,
    "zMaxSpeed": 300,
    "zHomingSpeed": 80,
    "zTravelAcceleration": 1000,
    "zPrintAcceleration": 1000,
    "xMotor": {
        "name": "X motor",
        "step": "ORIG_X_STEP_PIN",
        "dir": "ORIG_X_DIR_PIN",
        "enable": "ORIG_X_ENABLE_PIN"
    },
    "yMotor": {
        "name": "Y motor",
        "step": "ORIG_Y_STEP_PIN",
        "dir": "ORIG_Y_DIR_PIN",
        "enable": "ORIG_Y_ENABLE_PIN"
    },
    "zMotor": {
        "name": "Z motor",
        "step": "ORIG_Z_STEP_PIN",
        "dir": "ORIG_Z_DIR_PIN",
        "enable": "ORIG_Z_ENABLE_PIN"
    },
    "enableBacklash": "0",
    "backlashX": 0,
    "backlashY": 0,
    "backlashZ": 0,
    "stepperInactiveTime": 360,
    "maxInactiveTime": 0,
    "xMinPos": 0,
    "yMinPos": 0,
    "zMinPos": 0,
    "xLength": 200,
    "yLength": 200,
    "zLength": 328.85,
    "alwaysCheckEndstops": "1",
    "disableX": "0",
    "disableY": "0",
    "disableZ": "0",
    "disableE": "0",
    "xHomeDir": "-1",
    "yHomeDir": "-1",
    "zHomeDir": 1,
    "xEndstopBack": 2,
    "yEndstopBack": 2,
    "zEndstopBack": 2,
    "deltaSegmentsPerSecondPrint": 180,
    "deltaSegmentsPerSecondTravel": 70,
    "deltaDiagonalRod": 287.3375,
    "deltaHorizontalRadius": 155.575,
    "deltaAlphaA": 210,
    "deltaAlphaB": 330,
    "deltaAlphaC": 90,
    "deltaDiagonalCorrA": 0,
    "deltaDiagonalCorrB": 0,
    "deltaDiagonalCorrC": 0,
    "deltaMaxRadius": 100,
    "deltaFloorSafetyMarginMM": 15,
    "deltaRadiusCorrA": 0,
    "deltaRadiusCorrB": 0,
    "deltaRadiusCorrC": 0,
    "deltaXOffsetSteps": 0,
    "deltaYOffsetSteps": 0,
    "deltaZOffsetSteps": 0,
    "deltaSegmentsPerLine": 20,
    "stepperHighDelay": 2,
    "directionDelay": 2,
    "stepDoublerFrequency": 80000,
    "allowQuadstepping": "1",
    "doubleStepDelay": 0,
    "maxJerk": 20,
    "maxZJerk": 0.3,
    "moveCacheSize": 16,
    "moveCacheLow": 10,
    "lowTicksPerMove": 250000,
    "enablePowerOnStartup": "0",
    "echoOnExecute": "1",
    "sendWaits": "0",
    "ackWithLineNumber": "0",
    "killMethod": 1,
    "useAdvance": "0",
    "useQuadraticAdvance": "0",
    "powerInverting": 0,
    "mirrorX": 0,
    "mirrorXMotor": {
        "name": "Extruder 1",
        "step": "ORIG_E1_STEP_PIN",
        "dir": "ORIG_E1_DIR_PIN",
        "enable": "ORIG_E1_ENABLE_PIN"
    },
    "mirrorY": 0,
    "mirrorYMotor": {
        "name": "Extruder 1",
        "step": "ORIG_E1_STEP_PIN",
        "dir": "ORIG_E1_DIR_PIN",
        "enable": "ORIG_E1_ENABLE_PIN"
    },
    "mirrorZ": "0",
    "mirrorZMotor": {
        "name": "Extruder 1",
        "step": "ORIG_E1_STEP_PIN",
        "dir": "ORIG_E1_DIR_PIN",
        "enable": "ORIG_E1_ENABLE_PIN"
    },
    "mirrorZ3": "0",
    "mirrorZ3Motor": {
        "name": "Extruder 2",
        "step": "ORIG_E2_STEP_PIN",
        "dir": "ORIG_E2_DIR_PIN",
        "enable": "ORIG_E2_ENABLE_PIN"
    },
    "mirrorZ4": "0",
    "mirrorZ4Motor": {
        "name": "Extruder 3",
        "step": "ORIG_E3_STEP_PIN",
        "dir": "ORIG_E3_DIR_PIN",
        "enable": "ORIG_E3_ENABLE_PIN"
    },
    "dittoPrinting": "0",
    "featureServos": "0",
    "servo0Pin": 11,
    "servo1Pin": -1,
    "servo2Pin": -1,
    "servo3Pin": -1,
    "featureWatchdog": "0",
    "hasHeatedBed": "0",
    "enableZProbing": "1",
    "extrudeMaxLength": 160,
    "homeOrder": "HOME_ORDER_ZXY",
    "featureController": 0,
    "uiPrinterName": "RepRap",
    "uiPrinterCompany": "Home made",
    "uiPagesDuration": 4000,
    "uiHeadline": "",
    "uiDisablePageswitch": "1",
    "uiAutoReturnAfter": 30000,
    "featureKeys": "0",
    "uiEncoderSpeed": 1,
    "uiReverseEncoder": "0",
    "uiKeyBouncetime": 10,
    "uiKeyFirstRepeat": 500,
    "uiKeyReduceRepeat": 50,
    "uiKeyMinRepeat": 50,
    "featureBeeper": "0",
    "uiMinHeatedBed": 30,
    "uiMaxHeatedBed": 120,
    "uiMinEtxruderTemp": 170,
    "uiMaxExtruderTemp": 260,
    "uiExtruderFeedrate": 2,
    "uiExtruderRetractDistance": 3,
    "uiSpeeddependentPositioning": "0",
    "maxBedTemperature": 120,
    "bedSensorType": 1,
    "bedSensorPin": "TEMP_1_PIN",
    "bedHeaterPin": "HEATER_1_PIN",
    "bedHeatManager": 0,
    "bedPreheat": 55,
    "bedUpdateInterval": 5000,
    "bedPidDriveMin": 80,
    "bedPidDriveMax": 255,
    "bedPidP": 196,
    "bedPidI": 33,
    "bedPidD": 290,
    "bedPidMax": 255,
    "bedDecoupleTestPeriod": 300,
    "caseLightPin": -1,
    "caseLightDefaultOn": "1",
    "bedSkipIfWithin": 3,
    "gen1T0": 25,
    "gen1R0": 100000,
    "gen1Beta": 4036,
    "gen1MinTemp": -20,
    "gen1MaxTemp": 300,
    "gen1R1": 0,
    "gen1R2": 4700,
    "gen2T0": 25,
    "gen2R0": 100000,
    "gen2Beta": 4036,
    "gen2MinTemp": -20,
    "gen2MaxTemp": 300,
    "gen2R1": 0,
    "gen2R2": 4700,
    "gen3T0": 25,
    "gen3R0": 100000,
    "gen3Beta": 4036,
    "gen3MinTemp": -20,
    "gen3MaxTemp": 300,
    "gen3R1": 0,
    "gen3R2": 4700,
    "userTable0": {
        "r1": 0,
        "r2": 4700,
        "temps": [],
        "numEntries": 0
    },
    "userTable1": {
        "r1": 0,
        "r2": 4700,
        "temps": [],
        "numEntries": 0
    },
    "userTable2": {
        "r1": 0,
        "r2": 4700,
        "temps": [],
        "numEntries": 0
    },
    "tempHysteresis": 0,
    "pidControlRange": 20,
    "skipM109Within": 2,
    "extruderFanCoolTemp": 50,
    "minTemp": 150,
    "maxTemp": 275,
    "minDefectTemp": -10,
    "maxDefectTemp": 290,
    "arcSupport": "1",
    "featureMemoryPositionWatchdog": "1",
    "forceChecksum": "0",
    "sdExtendedDir": "1",
    "featureFanControl": "0",
    "fanPin": -1,
    "featureFan2Control": "0",
    "fan2Pin": "ORIG_FAN2_PIN",
    "fanThermoPin": -1,
    "fanThermoMinPWM": 128,
    "fanThermoMaxPWM": 255,
    "fanThermoMinTemp": 45,
    "fanThermoMaxTemp": 60,
    "fanThermoThermistorPin": -1,
    "fanThermoThermistorType": 0,
    "scalePidToMax": 0,
    "zProbePin": 52,
    "zProbeBedDistance": 10,
    "zProbeDisableHeaters": "0",
    "zProbePullup": "0",
    "zProbeOnHigh": "0",
    "zProbeXOffset": 0,
    "zProbeYOffset": 0,
    "zProbeWaitBeforeTest": "0",
    "zProbeSpeed": 2,
    "zProbeXYSpeed": 150,
    "zProbeHeight": 20,
    "zProbeStartScript": "",
    "zProbeFinishedScript": "",
    "featureAutolevel": "0",
    "zProbeX1": -70,
    "zProbeY1": 0,
    "zProbeX2": 70,
    "zProbeY2": 70,
    "zProbeX3": 70,
    "zProbeY3": -70,
    "zProbeSwitchingDistance": 2,
    "zProbeRepetitions": 1,
    "zProbeMedian": "0",
    "zProbeEveryPoint": "",
    "sdSupport": "0",
    "sdCardDetectPin": -1,
    "sdCardDetectInverted": "0",
    "uiStartScreenDelay": 1000,
    "xEndstopBackMove": 5,
    "yEndstopBackMove": 5,
    "zEndstopBackMove": 2,
    "xEndstopRetestFactor": 3,
    "yEndstopRetestFactor": 3,
    "zEndstopRetestFactor": 3,
    "xMinPin": -1,
    "yMinPin": -1,
    "zMinPin": -1,
    "xMaxPin": 28,
    "yMaxPin": 30,
    "zMaxPin": 32,
    "x2MinPin": -1,
    "y2MinPin": -1,
    "x2MaxPin": -1,
    "y2MaxPin": -1,
    "deltaHomeOnPower": "0",
    "fanBoardPin": -1,
    "heaterPWMSpeed": 0,
    "featureBabystepping": "1",
    "babystepMultiplicator": 1,
    "pdmForHeater": "0",
    "pdmForCooler": "0",
    "psOn": -1,
    "mixingExtruder": "0",
    "decouplingTestMaxHoldVariance": 20,
    "decouplingTestMinTempRise": 1,
    "featureAxisComp": "1",
    "axisCompTanXY": 0,
    "axisCompTanXZ": 0,
    "axisCompTanYZ": 0,
    "retractOnPause": 2,
    "pauseStartCommands": "",
    "pauseEndCommands": "",
    "distortionCorrection": "1",
    "distortionCorrectionPoints": 5,
    "distortionCorrectionR": 100,
    "distortionPermanent": "0",
    "distortionUpdateFrequency": 15,
    "distortionStartDegrade": 0.5,
    "distortionEndDegrade": 1,
    "distortionExtrapolateCorners": "0",
    "distortionXMin": 10,
    "distortionXMax": 190,
    "distortionYMin": 10,
    "distortionYMax": 190,
    "sdRunOnStop": "",
    "sdStopHeaterMotorsOnStop": "1",
    "featureRetraction": "0",
    "autoretractEnabled": "0",
    "retractionLength": 3,
    "retractionLongLength": 13,
    "retractionSpeed": 40,
    "retractionZLift": 0,
    "retractionUndoExtraLength": 0,
    "retractionUndoExtraLongLength": 0,
    "retractionUndoSpeed": 20,
    "filamentChangeXPos": 0,
    "filamentChangeYPos": 0,
    "filamentChangeZAdd": 2,
    "filamentChangeRehome": 1,
    "filamentChangeShortRetract": 5,
    "filamentChangeLongRetract": 50,
    "fanKickstart": 200,
    "servo0StartPos": -1,
    "servo1StartPos": -1,
    "servo2StartPos": -1,
    "servo3StartPos": -1,
    "uiDynamicEncoderSpeed": "1",
    "uiServoControl": 0,
    "killIfSensorDefect": "0",
    "jamSteps": 220,
    "jamSlowdownSteps": 320,
    "jamSlowdownTo": 70,
    "jamErrorSteps": 500,
    "jamMinSteps": 10,
    "jamAction": 0,
    "jamMethod": 1,
    "primaryPort": 1,
    "numMotorDrivers": 0,
    "motorDrivers": [
        {
            "t": "None",
            "s": "",
            "invertEnable": "0",
            "invertDirection": "0",
            "stepsPerMM": 100,
            "speed": 10,
            "dirPin": -1,
            "stepPin": -1,
            "enablePin": -1,
            "endstopPin": -1,
            "invertEndstop": "0",
            "minEndstop": "1",
            "endstopPullup": "1",
            "maxDistance": 20
        },
        {
            "t": "None",
            "s": "",
            "invertEnable": "0",
            "invertDirection": "0",
            "stepsPerMM": 100,
            "speed": 10,
            "dirPin": -1,
            "stepPin": -1,
            "enablePin": -1,
            "endstopPin": -1,
            "invertEndstop": "0",
            "minEndstop": "1",
            "endstopPullup": "1",
            "maxDistance": 20
        },
        {
            "t": "None",
            "s": "",
            "invertEnable": "0",
            "invertDirection": "0",
            "stepsPerMM": 100,
            "speed": 10,
            "dirPin": -1,
            "stepPin": -1,
            "enablePin": -1,
            "endstopPin": -1,
            "invertEndstop": "0",
            "minEndstop": "1",
            "endstopPullup": "1",
            "maxDistance": 20
        },
        {
            "t": "None",
            "s": "",
            "invertEnable": "0",
            "invertDirection": "0",
            "stepsPerMM": 100,
            "speed": 10,
            "dirPin": -1,
            "stepPin": -1,
            "enablePin": -1,
            "endstopPin": -1,
            "invertEndstop": "0",
            "minEndstop": "1",
            "endstopPullup": "1",
            "maxDistance": 20
        },
        {
            "t": "None",
            "s": "",
            "invertEnable": "0",
            "invertDirection": "0",
            "stepsPerMM": 100,
            "speed": 10,
            "dirPin": -1,
            "stepPin": -1,
            "enablePin": -1,
            "endstopPin": -1,
            "invertEndstop": "0",
            "minEndstop": "1",
            "endstopPullup": "1",
            "maxDistance": 20
        },
        {
            "t": "None",
            "s": "",
            "invertEnable": "0",
            "invertDirection": "0",
            "stepsPerMM": 100,
            "speed": 10,
            "dirPin": -1,
            "stepPin": -1,
            "enablePin": -1,
            "endstopPin": -1,
            "invertEndstop": "0",
            "minEndstop": "1",
            "endstopPullup": "1",
            "maxDistance": 20
        }
    ],
    "manualConfig": "",
    "zHomeMinTemperature": 0,
    "zHomeXPos": 999999,
    "zHomeYPos": 999999,
    "zHomeHeatHeight": 20,
    "zHomeHeatAll": "1",
    "zProbeZOffsetMode": 0,
    "zProbeZOffset": 0,
    "zProbeDelay": 0,
    "uiBedCoating": "1",
    "langEN": "1",
    "langDE": "1",
    "langNL": "0",
    "langPT": "1",
    "langIT": "1",
    "langES": "1",
    "langFI": "0",
    "langSE": "0",
    "langFR": "1",
    "langCZ": "0",
    "langPL": "1",
    "langTR": "1",
    "interpolateAccelerationWithZ": 0,
    "accelerationFactorTop": 100,
    "bendingCorrectionA": 0,
    "bendingCorrectionB": 0,
    "bendingCorrectionC": 0,
    "preventZDisableOnStepperTimeout": "0",
    "supportLaser": "1",
    "laserPin": 46,
    "laserOnHigh": "1",
    "laserWarmupTime": 0,
    "defaultPrinterMode": 2,
    "laserPwmMax": 255,
    "laserWatt": 2,
    "supportCNC": "1",
    "cncWaitOnEnable": 300,
    "cncWaitOnDisable": 0,
    "cncEnablePin": 44,
    "cncEnableWith": "1",
    "cncDirectionPin": -1,
    "cncDirectionCW": "1",
    "cncPwmMax": 255,
    "cncRpmMax": 8000,
    "cncSafeZ": 150,
    "startupGCode": "",
    "jsonOutput": "0",
    "bedLevelingMethod": 0,
    "bedCorrectionMethod": 0,
    "bedLevelingGridSize": 5,
    "bedLevelingRepetitions": 5,
    "bedMotor1X": 0,
    "bedMotor1Y": 0,
    "bedMotor2X": 200,
    "bedMotor2Y": 0,
    "bedMotor3X": 100,
    "bedMotor3Y": 200,
    "zProbeRequiresHeating": "0",
    "zProbeMinTemperature": 150,
    "adcKeypadPin": -1,
    "sharedExtruderHeater": "0",
    "extruderSwitchXYSpeed": 100,
    "dualXAxis": "0",
    "boardFanSpeed": 255,
    "keepAliveInterval": 2000,
    "moveXWhenHomed": "0",
    "moveYWhenHomed": "0",
    "moveZWhenHomed": "0",
    "preheatTime": 30000,
    "multiZEndstopHoming": "0",
    "z2MinMaxPin": -1,
    "z2MinMaxEndstop": 0,
    "extruderIsZProbe": "1",
    "boardFanMinSpeed": 0,
    "doorPin": -1,
    "doorEndstop": 1,
    "zhomePreRaise": 0,
    "zhomePreRaiseDistance": 10,
    "dualXResolution": "0",
    "x2axisStepsPerMM": 100,
    "coolerPWMSpeed": 0,
    "maxFanPWM": 255,
    "raiseZOnToolchange": 0,
    "distortionLimitTo": 2,
    "automaticPowerup": 0,
    "hasTMC2130": "0",
    "TMC2130Sensorless": "0",
    "TMC2130Steathchop": "1",
    "TMC2130Interpolate256": "1",
    "TMC2130StallguardSensitivity": 0,
    "TMC2130PWMAmpl": 255,
    "TMC2130PWMGrad": 1,
    "TMC2130PWMAutoscale": "1",
    "TMC2130PWMFreq": 2,
    "TMC2130CSX": -1,
    "TMC2130CSY": -1,
    "TMC2130CSZ": -1,
    "TMC2130CSE0": -1,
    "TMC2130CSE1": -1,
    "TMC2130CSE2": -1,
    "TMC2130CurrentX": 1000,
    "TMC2130CurrentY": 1000,
    "TMC2130CurrentZ": 1000,
    "TMC2130CurrentE0": 1000,
    "TMC2130CurrentE1": 1000,
    "TMC2130CurrentE2": 1000,
    "TMC2130CoolstepTresholdX": 300,
    "TMC2130CoolstepTresholdY": 300,
    "TMC2130CoolstepTresholdZ": 300,
    "microstepX": 16,
    "microstepY": 16,
    "microstepZ": 16,
    "microstepE0": 16,
    "microstepE1": 16,
    "microstepE2": 16,
    "parkPosX": 0,
    "parkPosY": 0,
    "parkPosZ": 10,
    "hasMAX6675": false,
    "hasMAX31855": false,
    "hasGeneric1": false,
    "hasGeneric2": false,
    "hasGeneric3": false,
    "hasUser0": false,
    "hasUser1": false,
    "hasUser2": false,
    "numExtruder": 0,
    "version": 100.2,
    "primaryPortName": "Serial"
}
========== End configuration string ==========

*/

Comments

  • I resolved the problem finally by starting completely fresh with the configuration tool and very carefully filling out each item.
  • Great also still strange and the question why remains unanswered. But ok, we are moving to a new implementation in future anyway.
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