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kratmel

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About kratmel

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  1. Hi, Visco You described the algorithm of the system with a VFD. I usually use the VFD internal option to control the brake. The brake active when the VFD reaches zero speed and there is no command to move in the forward or reverse direction. This eliminates the problems of controlling the VFD in different modes, for example, JOG, FIXED SPEED. No need to control the brakes with the PLC. This is especially useful when lifting or lowering some part of the mechanisms. However, the VFD must be able to control the brakes.
  2. Please check speed and settings in normal mode and try to change them in boot. In boot mode my V570 connect to PC only in specific com settings. Maybe battery problem possible to.
  3. You can increase the accuracy by increasing the number of bolts on the motor shaft. Use 6 bolts and you will have accuracy of approximately 10 turns per minute. However, make sure that the sensor has the appropriate frequency range. Or use an optical sensor and a perforated wheel. Using a 2.5ms interrupt to determine the sensor signal period will not increase the accuracy of the readings. It is also possible to use your sensor, diode, RC link, and send a signal to the analog input of the PLC. This is not very accurate, but this solution has advantages. A similar scheme is used in tachometers of old cars.
  4. You must build minimal Canopen configuration based on BK5110 (used only one of IO module). Please read https://download.beckhoff.com/download/document/io/bus-terminals/bk51x0en.pdf page 114 about canopen configuration for this type of coupler. Then use Visilogic help with CANopen sample code to build CANopen net step by step . Only after succesfull run CAN you must add another exp. modules and try to read https://download.beckhoff.com/download/document/io/bus-terminals/kl306xen.pdf page 29 about memory mapping for analog input . In that way i tryed to build my first CANopen with Lenze servo. Now it looks like simple for me, but at start i had the same problem. Best regard Roman
  5. Please read some rules from this two documents: http://literature.rockwellautomation.com/idc/groups/literature/documents/in/1770-in041_-en-p.pdf http://literature.rockwellautomation.com/idc/groups/literature/documents/in/drives-in001_-en-p.pdf I think that problem came with PLC power supply grounding. Please try to temporary separate OPLC power supply . Power them from battery backed UPS (Disconnect grounding of PS) Maybe you will see where is problem - electromagnetic noise or vibration. Also check the VFD specification - is it embedded noise filter present inside the VFD. Generaly this type of problem is in incorrect grounding of vfd + motor + equipment chasis. P.S. Please check position of noise filter enable switch inside VFD box. It present in all VFD.
  6. Thanks to Joe Tauser. Support team answer came to me immediately. But now it is impossible to make custom design for embedded alarm window. I solved the problem. Custom hand made alarm display design with big messages and standard history window is used now.
  7. I try to use large font 14 or 18 in alarm window message description. Alarm message is written above standard line with applied font any other changes not possible. It look like impossible to make custom design for embedded alarm window.
  8. Hi, I try to build project with new V700 panel. Large display make possible to use large buttons and fonts visble for user without glasses . Application in V700 is disigned for users with age above 50. But alarm display in V700 has small font and little buttons. Stylus must be used. It is hard to use V700 alarm display without magnification or glasses. Is it possible to switch font or resize embedded to V700 alarm display buttons?
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