The smart thermostat, made Wiser.Learn more
...See what we've been doing in some of our major markets.Find your Location
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
All models and serial numbers
Maximum frequency is set to 72 hertz
This can happen if the speed reference of the slave drive does not match the speed reference of the master. This often indicates the analog output from the Master is fed to the slave but the scaling is not correct.
Change the maximum frequency (tFr) of the master from 72 hertz (default) to match the High Speed (HSP) setting. This is usually 60 hertz.
The analog output of the drive is scaled from 0 to the maximum frequency parameter when assigned as Motor Freq. If the maximum frequency is at 72, the analog output will not reach full scale (10 V or 20mA) so the speeds of both drives will not be synchronized. The slave will run 20% slower than the master. If the two motors are coupled together (either directly or through the load) the stored energy in the DC bus of the Slave drive could rise above the allowable voltage threshold, causing an overbraking fault.
Sign up for all the latest solutions, offers and best practices straight to your inbox.
We are excited that you have joined the group. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Enjoy!