allscott
Member
- Join Date
- Jul 2004
- Posts
- 1,332
Injection braking.
http://resource.controleng.com/article/CA6318574.html
The OP stated he is using a Eurotherm (now SSD) 650 drive. This drive like most these days has a provision for injection braking. This drive is limited to 600 seconds IB, not a full time solution.
The problem is that injection braking causes alot of heat. You can turn down the braking current to not heat up the motor, however as you do that its effectiveness as a brake diminishes as well.
The Marathon motors mentioned are excellent. The black max and blue max can both be run all day at 0 speed producing full torque and not overheat. If you wanted the motor to be an electric brake you would hook it up in flux vector control and tell it to run at 0 HZ as opposed to telling it to stop.
http://resource.controleng.com/article/CA6318574.html
The OP stated he is using a Eurotherm (now SSD) 650 drive. This drive like most these days has a provision for injection braking. This drive is limited to 600 seconds IB, not a full time solution.
The problem is that injection braking causes alot of heat. You can turn down the braking current to not heat up the motor, however as you do that its effectiveness as a brake diminishes as well.
The Marathon motors mentioned are excellent. The black max and blue max can both be run all day at 0 speed producing full torque and not overheat. If you wanted the motor to be an electric brake you would hook it up in flux vector control and tell it to run at 0 HZ as opposed to telling it to stop.