John S01
Aluminum
- Joined
- Mar 5, 2017
- Location
- Sunnyvale CA
I am installing a new VFD drive for my 3 phase Bridgeport Mill on 110VAC in the garage. The instructions say not to install contactors between the drive and the motor. Isn't the drum switch on the mill between the VFD drive and the motor?
So I can't use the drum switch ever?
Here are the instructions
– It is not recommended to install contactors or disconnect switches between the drive and motor. Operating such devices while the drive is running can potentially cause damage to the drive’s power components. If such a device is required, it should only be operated when the drive is in a STOP state. If there is potential for the device to be opened while the drive is running, the drive must be programmed for COAST to stop (see Parameter 4 – STOP METHOD), and an auxiliary contact on the device must be interlocked with the drive’s run circuit. This will give the drive a stop command at the same time the device opens, and will not allow the drive to start again until the device is closed.
Thanks,
John
So I can't use the drum switch ever?
Here are the instructions
– It is not recommended to install contactors or disconnect switches between the drive and motor. Operating such devices while the drive is running can potentially cause damage to the drive’s power components. If such a device is required, it should only be operated when the drive is in a STOP state. If there is potential for the device to be opened while the drive is running, the drive must be programmed for COAST to stop (see Parameter 4 – STOP METHOD), and an auxiliary contact on the device must be interlocked with the drive’s run circuit. This will give the drive a stop command at the same time the device opens, and will not allow the drive to start again until the device is closed.
Thanks,
John
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