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  1. My Powerflex 525 VFD “Output Frequency” starts to drop out (20, 19, 18, 17, 16, 15, 14, 14, 0, 13, 0, 12, 11, 10, 0, 9, etc.) when the Command Frequency approaches and falls below approx. 14HZ. The “Command Frequency” however does hold steady and does not drop out (20, 19, 18, 17, 16, 15 14, 13, 12, 11, 10, 9, etc.). The Pulse In Scale is set to 64. I'm using the Pulse Train Input, and as a test started the frequency of the Pulse Train Input at a frequency such that the Command Frequency started at 20HZ, and then slowly adjusted the frequency of the Pulse Train Input down such that the Command Frequency decreased down towards 0Hz. I did notice that this apparent drop out point is exactly one tenth of the Max Hz value. So for example, with Max Hz set to 140, the dropout starts to occur at approx. 14 (140 x 0.1 = 14). This apparent one tenth drop out point held true for other Max Hz values we tried, including: Max Hz set at 60 started dropping out at 6 Max Hz set at 100 started dropping out at 10 Max Hz set at 140 started dropping out at 14 Max Hz set at 180 started dropping out at 18 Max Hz set at 190 started dropping out at 19 Max Hz set at 200 started dropping out at 20 Max Hz set at 250 started dropping out at 25 Max Hz set at 400 started dropping out at 40
  2. We have a devicenet network that consist of a compact 1769-SDN, 20+ PoweFlex 40 drives, and a couple compact I/O blocks.  Recently drives have been faulting randomly F71.  This has not been an issue in the past.  Drives fail occasionally and we swap them with a same HP drive.  We use a him copycat to upload and download parameters.     The DeviceNet power supply is separated from other power and has been replaced recently to rule it out.  The Network 120 ohm resistors are installed at the network’s beginning and end. The Network wiring has been inspected.    Has any experienced anything similar?    Thanks! 
  3. I have a new PowerFlex 525 with the encoder card and a quadrature encoder. It is connected via ethernet/ip to a control logix plc. The end goal is to either trigger step 1, which is to move about 500 "units" or to trigger step 2, which is to move 350 "units". For testing purposes I set the frequencies different on the two steps (as an easy way to tell which step was running). From the PLC I am successfully triggering the step I want. I am also able to reset faults and jog. I can also see the encoder units incrementing at parameter 388 and rehome it. My problem is that the drive does not stop when it gets to its destination, nor does it ever fire the "AtPos" bit. It will just run forever. I have tried every combination of logic that I can using the step wizard. I have also tried leaving the "Start" and "Timing_Belt:O.Freq_PosSel01" or immediately turning them off. No combination of settings seems to stop the drive, unless I manually trigger the "Stop" bit.   I would have loved to have just used a 527 drive, but no one in the US seems to have any at the moment so we went with the 525 and an encoder card.
  4. Hello All, I would like to control Powerflex 525 drive with Omron NJ301-1200 PLC via Ethernet/IP (Set speed, start, stop). I've gotten until the part where I downloaded the necessary .eds files of the drive and imported into my Sysmac studio. However, I'm stuck after this point while assigning target variables and Originator variables and eventually setting speed and controlling the vfd. I've attached images for your reference.
  5. Hey y'all- I have an application that uses an Allen Bradley servo with a brake and a linear actuator to lift a plate vertically. While maintaining a position, the servo drive (Kinetix 5500) will occasionally fault due to over-torque.  I'm thinking it could possibly be due to mechanical issues i.e. bearings in the actuator but my initial thought would be that it would fault while moving up/down as well, so far I've only ever seen it fault while holding a position. This leads me to suspect that there may be something off in the control loop. I'm not involved in the setup but I know we use load observer and I reckon we use auto-tune. Other than that, I wonder if it's something to do with the brake. I also read about mechanical resonance in the manual which seems like a stretch but it could be contributing, the frame that the actuator/motor is attached to does vibrate a fair bit.  I'm familiar enough with basic motion control using Allen-Bradley and understand the basic concepts behind the servo/control loop. However I'm at a loss for why the servo/drive would spontaneously over-torque while maintaining a position.  How would you guys approach troubleshooting this further/solving this issue?  Many thanks!
  6. ello I have a powerflex 400 of 25HP for a 60amp 25HP motor, the motor have a belt that move the clarifier of milk. It is a process that requires strength to move.So I try with the motor without the clarifier the vdf works well with a constant amp of 12 to the max of 50hz that is set up with a ramp of 600 sec.Then I try with the belt that move the clarifier... The vdf start the ramp with a wird amp behavior like 10 sec 100 amp and then 13 amp for 10 sec.When it gets to 50hz (the max) it starts the same behavior 13 amp when it reach the max RPM and when it decrease a little bit it gets 100 amp to get to the max RPM again.In this vdf powerflex 400 I didn't see the % of torque options that the last one Fuji had.Someone told me that powerflex 400 is not for power processed, they are focus in pumps and blowers more alike, and that I need a vdf vectorial like a powerflex 725.What do you think...PD: as the 100 amp is like 10 sec the protections dont show up. PD: I made a try with water and hot water, in that point with the max hz  (and 6800rpm) when the hot water start to flow the amp gets constant in 75 amp, but the motor dosnt get to the 6800 rpm again it just keep trying in 6700rpm and it mantains the 75amp triggering the motor protection for overload.
  7. Hello ! Need your help please . Powerflex is flashing yellow  an alarm condition exist (run inhibit stat) bit 1 is true ( no enable) ! What is exactly the problem and thanks in advance .
  8. I'm having trouble with some Powerflex 525 drives. Right now what I need to do is run them manually from the keypad to test conveyor belts.  Is there a way to do this and if so how?   Thanks in advance.
  9. Hello Sirs! I have a problem with PF527. I get alarms 'control sync alarm' and 'module sync alarm' occasionally. I suppose this meaning that PLC is missing some data from the PF527 device. How to confirm this or what should I do with the problem? Any ideas? Motion group update period is 8ms. Also this device is the last device in the ethernet line. I am thinking to pull the cable directly to the switch near PLC. I am not sure does it help?  
  10. Hi ! I have a powerflex 525 inverter. I have three phase motor. It is possible to make running the motor like this? If yes how ? Should I change some parameter in the inverter ? Thanks in advance. 
  11. So I'm having trouble writing a FBD within my current program for a slitting line. I need to keep a constant tension on my web as it is being recoiled onto our recoiler. I wrote a simple program using a sensor to read the growing rate of the coil to get a radius and I have feedback on my torque on the recoiler motor. The simplest math for this application without getting into anything too fancy should be Tension(lbs)= Torque(ftlbs)/coil radius. only problem is when its less than a foot then my calculation is thrown off and it actually shows tension goes up until it reaches the one foot mark then it seems to scale correctly. Do I need to scale something else? Any help on this would be appreciated.
  12. I have a powerflex 525 that loses it's parameters every time power is cycled. Is there a battery I don't know about? What could be causing this?  
  13. Getting this error while adding MC_TorqueControl. I want to control torque from HMI value. Using R88D-1SN08H-ECT drive and R88M-1M75030T-S2 Ac servo motor with NX1P2 PLC. Newbie Here. Please support. Error    1    The Axis parameter of the MC_TorqueControl instruction does not support single-axis position control axes.    Program1 Section0    Row 6  
  14. I am controlling the powerflex 527 drive with MSO instruction, first setting the drive on and then running the motor with MAJ instruction. After MSO instruction, motor is rotating about 2 sec and then stops to wait the  MAJ. I have not find any solution for this. My configuration is frequency control, no feedback, sensorless. One hint i found from the rockwell pages but it did not help me. Rated slip speed is set to zero.  
  15. Hi Everyone! I need some help with configuring an inverter. The inverter type is powerflex 70. How can I set the next parameters. It should be work with two speeds.  First:  around 40 Hz.  Second around 10 Hz.  I think first I need to decide the direction, So I need two digital input for forward and reverse. Then I need plus more digital input, one for the high speed and one for the low speed. I guess I have connect dc 24 V too. I just dont know where should I connect this signal. I didnt find the properly manual. Do I forget something ?  Can anybody help ?  Thanks in adnvance!
  16. I have an issues with various Powerflex 700S drives tripping out periodically on Net Loss DPI P5 fault (F# 59). These drives are set up on the same ControlNet network to communicate with the Contrologix 5563 processor. The drives will reset easily and the process restarted, but it is a nuisance and time is lost resetting the equipment. Any advice will be appreciated.
  17. Hello  i installed an powerflex 70 into a CNC Mill machine, and its works fine over 1000 rpms, but below that RPMs its like the motor loose torque. i think could be a sliping problem. its some parameter need it to be changed?. or any special parameter that i need to look out?.    thanks for your help.   Regards  
  18. Hello,  I got Allen-Bradley  1769-L36ERMS, AB Powerflex 755 and 20-750-S3 safety card.  According to: https://rockwellautomation.custhelp.com/app/answers/detail/a_id/946912 „"There is NO Integrated Motion / CIP Motion support with 20-750-S3 safety card” so I want to run hardwired emergency shutdown system.  How can I configure this module with safety card in PLC?
  19. Hey Guys,    This is my first time on a forum like this! but i need a hand with something if someone could point me in the right direction.   I have a Powerflex 40 drive communicating over Ethernet/IP to a switch, That drive has four Powerflex 4's connected to it thru DSI connection. They seemed to be wired correctly and seem to be sound connections but when someone on the production hits an E-Stop it removes power from this bank of drives. (Which is standard here) . However, when they power back up i get an F081 Error (Comms lost) on the master drive and one slave. Also, the port light on the 20-comm-e(Powerflex 40) is faintly flashing about every 5 seconds and is the only light on. In this state, none of them communicate. However, when i unplug the DSI cable, the 20-comm-e powers back up to normal operation. I then plug the DSI back in and everything works fine.  Should i start replacing parts or is there some parameters/other wiring i could check?   Thanks guys.
  20. I have G310 and need to communicate with a AB PowerFlex 753 via Ethernet (20-COMM-E). I have tinkered with the Allen-Bradley drivers, which appear to be a MSG function, with no success. Has anyone done this?
  21. Hi,  I'm new to TwinCAT 2 and i'm upgrading a long time design (hence the TwinCAT 2 reference), to read a more sensitive torque signal.  I'm using a Beckhoff CX1030 as my PLC Controller.  I needed to add 'homing' to my motor sequence and confirmed with Maxon, im using the function blocks correctly and in the correct sequence to establish my 'absolute zero'/'home' position.  The motor has an output to write to:  ControlWord, which tells the motor that the position it is sitting in is '0.'  My program compiles, it runs, it writes each function block, but it's not seeming to get back to the test run opMode, even though i tell it to and the function block performs the 'Write' function.  it's stuck at zero and not reading an analog input signal from my torque sensor.  so im getting an artificial torque reading through every test.   i think this is related to my tare motion.  I start the program, home the motor, get into profile velocity mode, tare my sensor, enter profile position mode, go back to position 0, then back to profile velocity mode, run a test, sample data, go back to 'home' or '0.'  I wonder 1st, is my variable not linked properly through the system manager?  2nd, i set a boolean variable to set the 4th bit to 1 in my control word write (setting the 4th bit high will set my current position to absolute zero), but did i not connect the program to the main sequence properly?  looking to read a valid signal again and see that my motor moves back to 'home' each time.  Do i not need to home the motor after the tare, since the tare nulls out the torque value after the tare? after this i need to program my sample period, instead of it being fixed, as it is currently written and then use my home position as my trigger to start sampling.... Beckhoff applications department is overloaded, currently and can't help and this is all beyond the knowledge of the general support line.  I've gotten fairly far, on my own, but of course, the project is under a time crunch.   Does anyone know twincat well enough to help guide me?
  22. hey people, I recently buy powerflex 4m, i need a some help, i wanted to autorun when power up it, i had set the a433 parameter to 1, but it still not autostart when power up.  Should I set the A451 [Auto Rstrt Tries] to 1 or....? I really need it to better work, if anyone can help me please. thank you
  23. Just wondering if I need to set up two Motion Groups to specify the direction of travel along 1 AXIS? (Forward and Reverse) If not, how do I specify direction when using motion instructions (specifically MAM) with incremental motion. 
  24. Hello All! This is my first post so please give my descriptions some lee-way please:P I am having trouble finding a solid example of ladder logic which integrates a: PowerFlex (755 in this case) Rotary Incrematal Encode ( or any encoder for that matter) A Prox to reset the resolution at specific points along the axis Also, can I use the standard Motion Instructions (MAJ,MAS,MAM etc) to control the movement sequences of the PowerFlex or are they only meant for use with Servos? I am working on automating a Lumber Treatment Process. The movements will have to move tens of thousands of pounds.. Therefore I would like to use the PowerFlex as a Torque Limiter to control a 15HP squirrel cage motor on a massive gear reduction. I have the distances and pulses per distance traveled from the mechanical engineering guys.. I'm just having problems integrating! After using the Setup Wizard for PowerFlex how can I go about actually inserting movement instructions for the drive into my ladder logic? Some more info on different movement profiles.. I've also included my attempt at trying to piece this together thus far.. Any input would be welcome! (StellaPLC) https://sites.google.com/site/lyncedrgb/eva/rslogix The actual drive and PLC are not available to be me at this time.. could this be an issue while trying to write this motion control program? (obviously not testing & troubleshooting portion) Tugger Speeds Freq. ACCEL TIME DECEL Time E-Stop Decel Torque % of max Notes   VERY SLOW 15HZ 0.5s 0.5s 0s 100     SLOW 30HZ 1s 1s 0s 100 Restricted to slow speed within 3m of ends of transfer deck   HAUL 60HZ 5s 5s 2.5S 100 Max torque limit 250% of FLA   EMPTY TRAVEL 120HZ 2s 0.5S 2.5S 30 Torque Limited to 25%  
  25. Hello world, how was your day?, hope would be fine: Here's my issue: I got a boiler, controlled by a "Compact logix L43" the protocol used is ethernet IP, There are four (4) Power flex 400 installed, Catalog number: ( 22C-D022N103 ) with the Ethernet/IP adapter "22COMM-UM-E",  then, one of them was having hardware problems with the Communication, but NOT THE ADAPTER (22COMM-UM-E), because I did test it in another drive, and actually works fine, the problem is in the drive. After checking parameters and connections, we decide to replace the drive for a POWER FLEX 525 with built in Ethernet/IP hardware. Here's my question:  Do I need to modify the PLC programm to connect the new drive WITHOUT ADAPTER or just I need to set the old powerflex 400 IP address and subnet mask to my new POWER FLEX 525?. In fact, my real question is: Are the registers that the PLC it's actually writing/reading to/from the drivers with the adapter, the same as for the POWER FLEX 525 with built in Ethernet/IP connection?. Hope this information could help you to help me :). Have a NICE DAY!.