Can you run two motors one VFD?
Can you run two motors one VFD?
A variable frequency drive (VFD) can be used to control multiple motors in some applications provided the right design considerations are made and appropriate protection is provided for each motor.
Can you couple two electric motors together?
You can connect two identical electric motors together on the same shaft. There is no “slipping out of sync” because there isn’t a issue of sync in the first place. Drive the two motors the same and both will develop close to the same torque.
Can all motors be used with a VFD?
While we’ve solved the single-speed problem of AC induction motors by introducing the variable frequency drive, not all motors are VFD compatible. Some motors are specifically designed to run on VFD power, while others need a few components added to the system to be compatible.
How do you connect two motors to a VFD?
Multiple conditions must be met when applying one VFD for control of multiple motors. First, each motor must have the same desired operating speed. With one VFD per motor, each motor can be controlled separately and run at a different speed. This is not so when running multiple motors from one VFD.
Does VFDs have overload protection?
VFDs have an adjustable overload parameter to protect the motor. Drives come standard with electronic thermal overload protection allowing the VFD to deliver 150% of the rated output current for 1 minute and higher current levels for shorter periods. The overload can be adjusted to protect smaller motors.
How many motors can VFD control?
1. You can even run more than 2 motors on a single variable frequency drive; it is absolutely OK, I am using it for quite a long time and the VFD is just working very fine. 2. In one application I had used 8 Motors (screw conveyors) on a single VFD (Gozuk make) we had no problem in that configuration.
Does adding more motors increase torque?
Additional motors will provide additional torque. There is no more complicated calculation. It’s that simple. All gear ratios can be calculated by “counting teeth”.
Does using two motors increase torque?
When two motors are connected on a same shaft and are run at same speed, the torques would definitely add up, but the speed (rpm) won’t change.
