FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

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4PARAMETERSPosition control by vector control(3) Troubleshooting (Position control)Phenomenon Cause Countermeasures1 Motor does not rotate.2 Position shift occurs.3 Motor or machine hunts.4Machine operation isunstable.(1) The phase sequence of themotor or encoder wiring iswrong.(2) The control mode selection Pr.800 setting is improper.(3) The servo on signal or strokeend signal (STF, STR) is notinput.(4) Command pulse, position pulsesign (NP) are not correctlyinput.(5) Pr. 419 Position command sourceselection setting is not correct.(6) When "0" is set in Pr. 419Position command sourceselection, the settings of positionfeed amount in Pr. 465 to Pr. 494are not correct.(1) The command pulses are notinput correctly.(2) The command is affected bynoise. Or the encoder feedbacksignal is compounded withnoise.(1) Check the wiring. (Refer to page 33 )(2) Check the Pr. 800 setting. (Refer to page 75 )(3) Check that the signals are input normally.(4)-1 Check that the command pulses are input normally.(Check the cumulative command pulse value in Pr.430)(4)-2 Check the command pulse form and commandpulse selection, Pr. 428, setting.(4)-3 Check that the position pulse sign (NP) is assignedto the input terminal. (inverter pulse input)(5) Check the position command source selection in Pr.419.(6) Check the position feed amount in Pr. 465 to Pr. 494 .(1)-1 Check the command pulse form and commandpulse selection, Pr. 428 setting.(1)-2 Check that the command pulses are input normally.(Check the cumulative command pulse value in Pr.430 )(1)-3 Check that the position pulse sign (NP) is assignedto the input terminal. (inverter pulse input)(2)-1 Decrease the Pr. 72 PWM frequency selection value.(2)-2 Change the earthing (grounding) point of shieldedwire. Or leave the cable suspended.(1) The position loop gain is high. (1) Decrease the Pr. 422 value.(2) The speed gain is high. (2)-1 Perform easy gain tuning.(2)-2 Decrease Pr. 820 and increase Pr. 821 .(1) The acceleration/decelerationtime setting has adverse effect.♦Parameters referred to♦Pr. 7 Acceleration time Refer to page 155Pr. 8 Deceleration time Refer to page 155Pr. 72 PWM frequency selection Refer to page 257Pr. 800 Control method selection Refer to page 75Pr. 802 Pre-excitation selection Refer to page 185Pr. 819 Easy gain tuning selection Refer to page 88Pr. 820 Speed control P gain 1 Refer to page 88Pr. 821 Speed control integral time 1 Refer to page 88(1) Decrease Pr. 7 and Pr. 8 .125
Position control by vector control4.6.7 Trouble shooting for when position control is not exercised normallyVectorPosition control is notexercised normallyHave you checkedthe speed control items?NYCheck the speedcontrol measures.Position shift occurs.YNHave you madethe electronic gearsetting?YNSet the electronic gear.(Pr. 420, Pr. 421)The forward (reverse)rotation stroke end signal has Yturned off before completionof positioning.Do not turn off the forward(reverse) rotation stroke endNsignal before completion ofpositioning.Motor or machine ishunting.YNThe position loop gain(Pr. 422) is high.NMachine operation isunstable.NPlease contact your salesrepresentative.YDecreasethe position loop gain(Pr. 422).YInsufficient torque.Increase the excitationratio (Pr. 854).Perform easy gain tuning.The speed control gain is high.Decrease the speed controlproportional gain (Pr. 820).Increase the speed controlintegral time (Pr. 821).REMARKSThe speed command of position control relates to speed control. (Refer to page 81 )126
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INVERTERFR-A701INSTRUCTION MANUAL (
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CONTENTS1 OUTLINE 11.1 Product chec
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4.6.4 Setting of the electronic gea
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4.18.4 Overspeed detection (Pr. 374
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5.5.5 Motor rotates in opposite dir
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MEMO
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Product checking and parts identifi
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Inverter and peripheral devices1.2.
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Method of removal and reinstallatio
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Installation of the inverter and en
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Terminal connection diagram2.1 Term
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Main circuit terminal specification
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Control circuit specifications2.3 C
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Control circuit specifications(2) O
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Control circuit specifications4)Sin
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Control circuit specifications2.3.4
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Connection of motor with encoder (v
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EMC and leakage currents3.1 EMC and
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EMC and leakage currents3.1.2 EMC m
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EMC and leakage currents3.1.3 Power
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Power-off and magnetic contactor (M
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Precautions for use of the inverter
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Failsafe of the system which uses t
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MEMO50
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Operation panel (FR-DU07)4.1 Operat
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Operation panel (FR-DU07)4.1.3 Chan
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Parameter listParameter ListFunctio
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Parameter listFunctionParameter Nam
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Parameter listFunctionParameter Nam
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Parameters according to purposes4.3
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4.21.4 Response level of analog inp
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Control mode4.3.1 What is vector co
Page 85 and 86: Control mode(1) Speed controlSpeed
Page 87 and 88: Control mode(3) Vector control test
Page 89 and 90: Control mode• Terminal 4 function
Page 91 and 92: Speed control by real sensorless ve
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Page 102 and 103: 4PARAMETERS(5) Manual input speed c
Page 110 and 111: 4PARAMETERS(4) Setting torque bias
Page 114 and 115: 4PARAMETERSTorque control by real s
Page 116 and 117: 4PARAMETERS(3) Operation example (w
Page 120 and 121: 4PARAMETERS(3) Torque command using
Page 126 and 127: 4PARAMETERSPosition control by vect
Page 130 and 131: 4PARAMETERS(1) Setting of position
Page 132 and 133: 4PARAMETERS(3) Selection of clear s
Page 138 and 139: 4PARAMETERSAdjustment of real senso
Page 140 and 141: 4PARAMETERSAdjust the output torque
Page 152 and 153: 4PARAMETERSLimit the output frequen
Page 154 and 155: 4PARAMETERS(3) Base frequency volta
Page 156 and 157: 4PARAMETERSSet V/F patternPr. 14Set
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Page 160 and 161: 4PARAMETERSFrequency setting by ext
Page 166 and 167: 4PARAMETERS4.12 Setting of accelera
Page 168 and 169: 4PARAMETERSSetting of acceleration/
Page 174 and 175: 4PARAMETERS(2) Optimum acceleration
Page 176 and 177: 4PARAMETERS4.13 Selection and prote
Page 178 and 179: 4PARAMETERSSelection and protection
Page 180 and 181: 4PARAMETERS4.13.2 Applied motor (Pr
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4PARAMETERSSelection and protection
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4PARAMETERSMotor brake and stop ope
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4PARAMETERS(5) Brake operation sele
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4PARAMETERS• Position loop gain (
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4PARAMETERS• Pr. 399 Orientation
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4PARAMETERSFunction assignment of e
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4PARAMETERS4.15.2 Inverter output s
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4PARAMETERS4.15.5 Magnetic flux dec
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4PARAMETERS(3) Forward rotation and
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4PARAMETERS4.15.8 Output current de
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4PARAMETERS4.15.10 Remote output fu
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4PARAMETERSMonitor display and moni
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4PARAMETERSOperation selection at p
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4PARAMETERS(6) Power failure decele
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4PARAMETERS⋅⋅⋅⋅Operation se
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4PARAMETERS4.18.3 Input/output phas
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4PARAMETERSEnergy saving operation
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4PARAMETERSMotor noise, EMI measure
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4PARAMETERSFrequency/torque setting
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4PARAMETERS4.21.4 Response level of
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4PARAMETERS(6) Adjustment method of
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4PARAMETERSc) Method to adjust torq
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4PARAMETERS(2) Disconnected PU dete
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4PARAMETERS4.22.3 Reverse rotation
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4PARAMETERSSelection of operation m
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4PARAMETERS(6) PU/external combined
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4PARAMETERS(10) Switching of operat
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4PARAMETERS4.23.2 Operation mode at
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4PARAMETERS4.24 Communication opera
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4PARAMETERS4.24.2 Wiring and arrang
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4PARAMETERSCommunication operation
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4PARAMETERS(8) Instructions for the
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4PARAMETERS(9) Setting items and se
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4PARAMETERS(5) Message format types
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4PARAMETERS4.25 Special operation a
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4PARAMETERSSpecial operation and fr
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4PARAMETERS(1) Load torque high spe
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4PARAMETERS(2) Limit the frequency
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4PARAMETERS4.25.7 Regeneration avoi
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4PARAMETERSUseful functions4.26 Use
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4PARAMETERS(1) Life alarm display a
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4PARAMETERSUseful functions4.26.3 M
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4PARAMETERSUseful functions(3) Sett
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4PARAMETERSSetting of the parameter
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4PARAMETERSSetting of the parameter
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4PARAMETERSAll parameter clear4.29
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4PARAMETERSParameter copy and param
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4PARAMETERSCheck and clear of the f
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5 PROTECTIVE FUNCTIONSThis chapter
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List of fault or alarm display5.2 L
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Causes and corrective actionsOperat
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Correspondences between digital and
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Check first when you have troubles5
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6 PRECAUTIONS FORMAINTENANCE AND IN
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Inspection item6.1.3 Daily and peri
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Inspection item6.1.6 CleaningAlways
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(2) Smoothing capacitorsInspection
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Measurement of main circuit voltage
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Measurement of main circuit voltage
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7 SPECIFICATIONSThis chapter provid
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Rating•400V classType FR-A741-K 5
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Common specifications7.2 Common spe
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Outline dimension drawings•FR-A72
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Outline dimension drawings•FR-A72
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Outline dimension drawings7.3.2 Ded
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Outline dimension drawings• Dedic
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Installation of the heatsink portio
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APPENDICESThis chapter provides the
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Appendix 2 Control mode-based param
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ParameterNameInstructionCode * 1Rea
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Parameter423NamePosition feed forwa
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Parameter500NameInstructionCode * 1
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ParameterC16(919)C17(919)C18(920)C1
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