Hi everyone:
Is there a way to stop a PowerFlex 755 in a fast ramp and then hold the motor for a few seconds? I need this to avoid the load to rotate with the inercia after the inverter releases the motor.
I tried "Ramp to Hold" but I cannot control a delay time, it remains with the VFD active and 0 speed until the next start. For now, I dont have wire stop to Di to use as a "stop mode B", only a stop command via Ehtenet/ip.
The other question, in case that I need a very fast stop, if I use "Current limit Stop", do I neccesary need a dynamic brake resistor? Can I use "current limit stop" and bus regulator with "Adjust freq"? Is a powerflex 755, 400V, 2,2 kw, motor with gear box and a unwind roll as the load. For now, I dont have the data of weight and inertia, is not a huge mass, I am just controlling the torque or speed with a diameter sensor with an equation in Logix.
Thanks!
Is there a way to stop a PowerFlex 755 in a fast ramp and then hold the motor for a few seconds? I need this to avoid the load to rotate with the inercia after the inverter releases the motor.
I tried "Ramp to Hold" but I cannot control a delay time, it remains with the VFD active and 0 speed until the next start. For now, I dont have wire stop to Di to use as a "stop mode B", only a stop command via Ehtenet/ip.
The other question, in case that I need a very fast stop, if I use "Current limit Stop", do I neccesary need a dynamic brake resistor? Can I use "current limit stop" and bus regulator with "Adjust freq"? Is a powerflex 755, 400V, 2,2 kw, motor with gear box and a unwind roll as the load. For now, I dont have the data of weight and inertia, is not a huge mass, I am just controlling the torque or speed with a diameter sensor with an equation in Logix.
Thanks!