I need some clarifications from VFD experts.
I have a project with a vibratory conveyor that must be stopped relatively quickly. Stopping is once every 120 seconds. The application is otherwise simple. Fixed speed. VFD is a Siemens G120.
We have added a brake resistor for dynamic braking, but the problem is that its placement is not optimal for dissipating the heat.
I am therefore contemplating if I can do something else. I think these are my options:
1. Dynamic braking with brake resistor.
2. DC braking. I understand that it will cause heat-up of the motor instead of the brake resistor.
3. Compound braking. I am at a loss as to what is the difference to DC braking. Compound braking adds a DC component to the voltage supplied to the motor, and also heats up the motor.
I would also like to get some hints as to why I would chose one of the others - other than heating up the motor or the brake resistor.
I have a project with a vibratory conveyor that must be stopped relatively quickly. Stopping is once every 120 seconds. The application is otherwise simple. Fixed speed. VFD is a Siemens G120.
We have added a brake resistor for dynamic braking, but the problem is that its placement is not optimal for dissipating the heat.
I am therefore contemplating if I can do something else. I think these are my options:
1. Dynamic braking with brake resistor.
2. DC braking. I understand that it will cause heat-up of the motor instead of the brake resistor.
3. Compound braking. I am at a loss as to what is the difference to DC braking. Compound braking adds a DC component to the voltage supplied to the motor, and also heats up the motor.
I would also like to get some hints as to why I would chose one of the others - other than heating up the motor or the brake resistor.