Originally Posted by
Greg King
Im gathering parts to turn my Central Machinery Mill in to CNC. Below is the spects of the driver
4 Axis BIPOLAR Stepper Motor PWM Control
Resolution FULL 1/2 1/4 1/8 Step Mode Individual Axis Selectable
2.5AMP Per Axis with Adjustable Onboard Motor Current
Power Requirement - Min.8vdc to Max 32vdc
Use 4 ,6 or 8 Wire Nema Motor Bipolar or Unipolar
Heat Sinks Provided for All Driver ICs and Power Transistor
PFD AutoTune Feature
Integrated DB25 Breakout
OPTO-Isolated, Motor Driver IC
SMT Components
Dedicated Hardware e-stop / limit screw terminal inputs and outputs
I have 4 motors spects below
powermax II 1.8 step motor
mod.M22Nsxb-JDS-ns-02
Is(dc);2.3 A Bipolar series Vs(dc) 65V
Po 104 W T:90 C max
1500 RPM ambient:40 C
They are 1/4" shafts
The Drive voltage is only rated at 35 Vdc Max. Can i run these motor at that low a voltage ( say 24Vdc) and stay within the current rating of the driver board.
I will also be changing the axis lead screws to ball screw shafts to reudce drag ont the axis.
TIA
If you run that board above 27 Volts it will probably fail somewhere in the future, 3977 chips absolutely won't take more than 35V and when you allow for motor bemf....run it at 24vdc and never spin an unpowered motor with a drill or other such motor when hooked to the driver.
Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
Vist my websites - http://pminmo.com & http://millpcbs.com