I'm just doing bench work for a large PLC job.
The servo module exports -10 to + 10 VDC to control speed and direction of the drive. But my drive on the bench only supports 0 to +10VDC (the final will use the -10 to +10) It will work as 0-5 being reverse and 5-10 being forward speeds, and 5dvc being stopped.
I feel I have two options:
1 - Build an amp that will drive a small hobby DC motor to spin the encoder. (the output of the servo module won't have enough current to drive the motor outright)
2 - Build an amp that converts the -10 to +10 where Zero volts in the input side would equal 5volts on the output side.
I'd prefer option 2, that way the safeties and drive enables, etc can also be tested.
I'm *rather* analog challenged. help?
Thanks,
Dave
The servo module exports -10 to + 10 VDC to control speed and direction of the drive. But my drive on the bench only supports 0 to +10VDC (the final will use the -10 to +10) It will work as 0-5 being reverse and 5-10 being forward speeds, and 5dvc being stopped.
I feel I have two options:
1 - Build an amp that will drive a small hobby DC motor to spin the encoder. (the output of the servo module won't have enough current to drive the motor outright)
2 - Build an amp that converts the -10 to +10 where Zero volts in the input side would equal 5volts on the output side.
I'd prefer option 2, that way the safeties and drive enables, etc can also be tested.
I'm *rather* analog challenged. help?
Thanks,
Dave