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christerEngblom

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Everything posted by christerEngblom

  1. Christer, your PowerBrick has a 465. All of the 19" rack versions we built for the synchrotrons use 465s to avoid a problem with VLAN packets on Ethernet. ah thanks Tony!
  2. Hello, just stumbled onto this thread as I am looking into upgrading my firmware from 2.0.2.14 to the newest of 2.3.2.5 on my Powerbrick LV platform (command 'type' returns 'POWER PMAC BRICK'). I would just like to clear up something before proceeding: When I send the query command 'cpu', I get 'PowerPC,APM86xxx' as a response. If I follow the flowchart, I should get the 'powerpmac465.zip' package. But according to the flowchart, it says that the response 'Power PC, 460 EX' is the one corresponding to the Powerbrick LV hardware. Should I still continue with the 'powerpmac465.zip' package? Thanks in advance, Christer
  3. Hi Steve and thanks for your response. I checked the parameter and Motor[4].Ctrl is already set to Sys.ServoCtrl.
  4. Hello, I am currently setting up a cascading loop and I am having abit of an issue of the outermost motor output, Motor[4].IqCmd. It seems this outputs values that are proportional to the motor position rather than velocity or torque. The setting is as follows: ------- Motor[4].pDac=Sys.pushm; Motor[4].EncType=5 EncTable[4].type=1; EncTable[4].pEnc=PowerBrick[1].Chan[1].ServoCapt.a; EncTable[4].index1=0; EncTable[4].index2=0; EncTable[4].index3=0; EncTable[4].index4=0; EncTable[4].MaxDelta=0; EncTable[4].ScaleFactor=0.00390625; Motor[4].pEnc=EncTable[4].a Motor[4].pEnc2=EncTable[4].a Motor[4].pLimits=0 Motor[4].pAmpEnable=0 Motor[4].pAmpFault=0 Motor[4].JogTs=-0.1 Motor[4].JogTa=-0.1 Motor[4].JogSpeed=8; Motor[4].Stime=4; Motor[4].Servo.Kp=0.079999998; Motor[4].Servo.Kvfb=0.40000001; Motor[4].Servo.Ki = 0.55000001; Motor[4].Servo.Kvff = 0; Motor[4].Servo.Kaff = 0; Motor[4].Servo.Kvifb = 0; Motor[4].Servo.Kviff = 0; Motor[4].Servo.OutDbOn=0; Motor[4].Servo.OutDbOff=0; Motor[4].FatalFeLimit=2000; Motor[4].MaxDac=32768; Motor[4].ServoCtrl=1; ------- The cascade uses Motor[x].MasterCtrl=1 and sets Motor[x].pMasterEnc=EncTable[11].a. The innermost loop then sets EncTable[11].pEnc=Motor[4].IqCmd.a, but since the IqCmd already gives out positional values there is no need to integrate, and EncTable[11].index4=0; This setup is problematic since the PID wont work well with a servo out that is proportional to position, and I have issues of extremely limited range as well. Have I forgotten something? Best Regards, Christer
  5. ah, thanks for the response on the matter! I was hoping to avoid additional modifications on the cabling between the device and the ACC-14E but maybe it is unavoidable. The TB1 connector (GND and 5V, unconnected) is however on the card and not (seemingly) connected to J4 & J5. This should always remain unconnected? Best Regards, Christer
  6. Hello, I am currently using the ACC-14E to interface with other TTL GPIO equipment and I have run into abit of a snag. It seems that the ACC-14E can't output enough power to keep 5V; it goes down to 3.4V when I plug in more than one output on the same DataRegister. I could solve this by adding a electronic buffers to each and single output but that would require soldering which I would preferably avoid. My question is, could I beef up the power output of the card? When I pull out the card I see an empty connector for GND and 5V (TB1)? Could I plug in an external 5V powersource into this? I couldn't find anything in the documentation on the matter, but perhaps I missed something? Best Regards, Christer
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