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  1. Hello guys, I am new to this forum and have some problems with my PowerFlex755 EENET frequency inverter. I want to do a point to point positioning task but my problem before I can have a look at the point to point positioning is, that the inverter is always running with 5Hz as soon as I give the start command. Even if I write 0.0 to the reference the output frequency is about 5 Hz. When I change my reference speed to 10.0Hz the output frequency is 12.X (see attached screenshots). . I thought that maybe a min frequency of 5Hz was set somehow, but I couldn't find a parameter and that wouldn't explain why I have 12.X Hz as the output frequency with a setpoint of 10Hz. And an other question, have someone experience with positining tasks with a PowerFlex755 and Point to Point positioning? I think in the first step it is not working because of the problem I described above, but maybe someone have a programming example or could tell me where I can find some information about how to use the Point to Point positioning?   Thank you for advice!  Matthis Josewski
  2. Positioning and speed control

    Hello Guys. Is it possible to use an fr-a840 to use in the same time positioning control and also in speed control mode ? In the moment the vfd is in speed control mode. But now i also have to need to stop the conveyor in certain position. It will be a new feature. If its not possible, do i need a hsc ?  The speed of the conveyor is 20 m/min and the accuracy should be within 3 mm.  Could anybody help me with this.  Thanks ahead.
  3. Positioning and speed control

    Hello Guys. Is it possible to use an fr-a840 to use in the same time positioning control and also in speed control mode ? In the moment the vfd is in speed control mode. But now i also have to need to stop the conveyor in certain position. It will be a new feature. If its not possible, do i need a hsc ?  The speed of the conveyor is 20 m/min and the accuracy should be within 3 mm.  Could anybody help me with this.  Thanks ahead.
  4. Hello! I'm trying to connect my QD75M2 with a MR-J2S40B1 Servo amplifier with an SSCNET cable. The problem is when I try to turn on the Servo ON/OFF on the Intelligent function in GxWorks2, an error occurs saying the servo amplifier is disconnected with my QD75M2. I'm confident that I've wired it properly. What could be the problem? Hoping you might help. Thank you.
  5. Crane Positioning

    Hey folksI'm trying to make a Ladder program in Sysmac Studio to control a Crane.The crane gets via a HMI a position that it must drive to, first at high speed then in low speed this is controlled via encoder signal for fine positioning there are several sensors.For all this I have an NX1P2-9B24DT1, NX-EC0222 and 3G3MX2-A4030-ESomeone here who can help me with an example of how this can be done in Ladder.Many thanks in advance for your help.
  6. Positioning with FX5U and FX5-40SSC

    Hi Friends. I need some Help with Positioning. I'm using the FX5U PLC and the FX5-40SSC "Simple" Motion Controller with Servo MR-JE-20B and Servo Motor HG-KN23K which is controlling a Linear Guide. The JOG Modus is Working, Home Position is Working too, but I cant Programm a Position where the Motor have to Drive. I hope someone can Help. Part of My Program looks like:   FX5SSC_1.stsysctrl_d.bPLC_Ready_D:=TRUE; FX5SSC_1.stSysMntr2_D.bReady_D:=TRUE; M_Ax1_PLC_Ready:=TRUE; M_Ax2_PLC_Ready:=TRUE; M_Ax3_PLC_Ready:=TRUE; IF FX5SSC_1.stSysMntr2_D.bReady_D THEN     FX5SSC_1.stSysCtrl_D.bAllAxisServoOn_D:=TRUE;      END_IF; IF M_Ax2_Error_Reset THEN          MOV( bEnable OR PLC_1st_scan , K0 , K4M700 );     M_FX5SSC_OperateError_Ax2 (i_bEN:= TRUE ,i_stModule:= FX5SSC_1 ,i_uAxis:= 2    ,i_bErrReset:= M_Ax2_Error_Reset ,o_bModuleErr=> bEnable ,o_uModuleErrId=> D_Ax2_Operate_Error);      END_IF; IF P_Achse_HomeDrive THEN          M_FX5SSC_StartPositioning_Ax2(i_bEN:= P_Achse_HomeDrive ,i_stModule:= FX5SSC_1 ,i_uAxis:= 2 ,i_uStartNo:= 9001 ,     o_bOK=> bEnable1 ,o_bErr=> bEnable2);          RST( bEnable1 OR bEnable2 , P_Achse_HomeDrive );     P_Achse_Referenziert:=TRUE;     RST( TRUE , Referenzfahrt_TP_Ein_Aus );      RST( TRUE , Fehleranzeige_P_Achse_nicht_Ref );      END_IF;   SpeicherP1:= REAL_TO_INT (Startposition_TP_P_Achse); M_FX5SSC_SetPositioningData_Ax2(i_bEN:= Beginne_FahrtP ,i_stModule:= FX5SSC_1 ,i_uAxis:= 2 ,i_uDataNo:= 1); M_FX5SSC_StartPositioning_Ax2(i_bEN:= Beginne_FahrtP ,i_stModule:= FX5SSC_1 ,i_uAxis:= 2 ,i_uStartNo:= 1);  M_FX5SSC_ChangeSpeed_Ax2(i_bEN:= Beginne_FahrtP ,i_stModule:= FX5SSC_1 ,i_uAxis:= 2 ,i_udSpeedChangeValue:= 100); M_FX5SSC_ChangePosition_Ax2(i_bEN:= Beginne_FahrtP ,i_stModule:= FX5SSC_1 ,i_uAxis:= 2 ,i_dTargetNewPosition:= REAL_TO_DINT(Startposition_TP_P_Achse) ,i_udTargetNewSpeed:= INT_TO_DWORD(Fahrgeschwindigkeit_TP_P_Achse));       IF StartPAxis THEN          FX5SSC_1.stnAxCtrl1_D[1].dTargetNewPosition_D:=REAL_TO_DINT(Endposition_TP_P_Achse);     FX5SSC_1.stnAxCtrl2_D[1].uPositioningStart_D:=1;      END_IF;
  7. Hi, I am developing Servomotor Drive Module for Mistubishi servomotor to control its positioning and speed. I have combined two FBs of the RD77MS4 FBs 1. SetPositiiningData FB 2. StartPositioning FB  and defined in Local label as  Label Name: i_stModule , Data Type : M+RD77 Class: VAR_INPUT. I get Error Invalid device or invalid constant is used. Can someone tell me how to define Module Label while combining two  FBs using same Module. Please
  8. Hi, I am developing Servomotor Drive Module for Mistubishi servomotor to control its positioning and speed. I have combined two FBs of the RD77MS4 FBs 1. SetPositiiningData FB 2. StartPositioning FB  and defined in Local label as  Label Name: i_stModule , Data Type : M+RD77 Class: VAR_INPUT. I get Error Invalid device or invalid constant is used. Can someone tell me how to define Module Label while combining two  FBs using same Module. Please
  9. hallo everyone ...i use mitsubishi Q00UJCPU and QD77MS2.. i try to make a speed control program and the speed wants to be changed during servo operating, i use dedicated instructions ZP. PSTRT1 (axis 1) and have tryed but it was only successful to change speed with "change speed control" function once ... is it like it? cannot change "change speed control" many times when servo operations?