Devices such as reactors or chokes, which add impedance and smooth out the current draw from the VFD rectifier, will help to reduce harmonics and are sometimes built into the VFD in the dc bus circuit. If harmonics are of concern, such as might be the case in a hospital or airport, pro...
Harmonic problems tend to diminish moving farther away from the nonlinear load. Steps to isolate and troubleshoot harmonics CAUTION: Troubleshooting requires work on live circuits; be sure to follow the requirements of NFPA 70E: Standard for Electrical Safety in the Workplace®. Check possible ...
Some technicians will change out parts until the trouble goes away. This is an expensive way to troubleshoot, since most motors and drives start at $500 and up. It's not unusual to find that the same motor/drive that had failed may start working in another application. This makes the jo...
Controlling your axis from the HMI allows integrators and maintenance staff to teach positions and troubleshoot issues without connecting to the PLC. This is where your jog move comes in handy. Your axis control should include a jog forward, backward, continuous jog, and incremental jog. When th...
a failing disk drive, an overloaded memory, a fan overheating, or any number of other potential faults. If you suspect it’s a hardware problem, Hardware Tests are the way to troubleshoot on Macs built before 2013. In newer models, those built after 2013, those same tests are labeled App...
Speed Potentiometer: Allows the operator to set motor speed with pot. Digital Programming / Display Unit: Allows the operator to program and troubleshoot the drive by inputting values through a keypad with an LED or LCD display unit. Drive operation can also be monitored through this display. ...
almost impossible to troubleshoot our systems,” said one. “We service systems that were built from the late 1950s to the present. We are trained to work safely, but if we adhered to all of today’s standards, a service call that normally would take a few days would take a few ...
A: 这取决于电机的类型和应用场景,但通常可以期待至少10%-30%的效率提升。 Q: 变频器的调试过程中,如果遇到问题怎么办? A: 首先,参考变频器的用户手册进行故障排除。如果问题仍然无法解决,建议联系制造商的技术支持。 Q: 变频器需要定期维护吗? A: 是的,定期维护可以预防故障,确保变频器长期稳定运行。
Some technicians will change out parts until the trouble goes away. This is an expensive way to troubleshoot, since most motors and drives start at $500 and up. It's not unusual to find that the same motor/drive that had failed may start working in another application. ...
It turned out that technicians had left the old wiring when they upgraded the VFD and motor. "The insulation was still within our spec, but the new VFD was far more sensitive than the old one and it detected the slight insulation breakdown and kept kicking o...