CAD_CAM_EDM_DRO@egroups.com re: choice of steppers

I was considering a pair of these Sanyo Denki steppers to go with the Gecko G201 stepper drivers because of the price
($99ea)and power but I just now noted that the voltage rating for these is 12 to 300 volts (as per the actual motor
label)

Now it is my understanding that the G201s max out at 80 volts and also that it is recommended to run the stepper at
something like 20/25 times rated voltage.

Am I right in concluding that these would be a poor choice for use with the G201??

Bill Darby


Sanyo Denki Step-Syn Universal Stepper Motor

These Hybrid Stepper Motors have four Independent Windings with eight Leads that can be used in both Unipolar and
Bipolar Configuration. By Paralleling or connecting the Windings in Series the User can create either a Unipolar or
Bipolar Motor.

Rating for Unipolar Full Step mode
Holding Torque=486 oz/inch (35Kg/cm)
Rotor Inertia=21.5oz/inch^2 (1.55Kg/cm^2)
Winding Inductance=2mh

Bipolar will give You more Torque
Bipolar-Parallel will give you good High Speed Torque
Bipolar-Series will give you better Low speed Torque
As a general Rule the allowable Current through each Winding is:
For Bipolar- Series 6.7A x 0.707=4.74A
For Bipolar- Parallel 6.7A x 1.414=9.47A
were 6.7A is the Unipolar Rating