MINITECH
CNC Mini-Mill User's Guide
Computer Interface - Connect the parallel cable from your computer into this connections
Stepper Motor Connections
Stepper Motor Cables - These get connected to each one of the stepper motors. Each cable
corresponds to a motor; match the X to the X motor, Y to Y, etc.
The Mini-Mill has three stepper motors that control the movements of each table. Each
stepper motor has a cable that leads from the motor's case to the controller box.
NOTE:Make sure all power devices including the computer, controller and spindle are turned
off prior to making the stepper motor connections.
Take the lead of each motor and find the corresponding outlet. Snap the connector into the
corresponding connector.
NOTE: The stepper motor connections are important. To assure you have made the right
connections review the following diagram. Make sure the correct axis is connected to the
corresponding axis port on the controller box.
Problem Solving: To check to see if AC power is getting to the controller power supply, turn it
on and the red light switch should come on. If it does not, check the fuse on the back side of
the power supply. If it is blown, replace it with the same power rating. Do not attempt to
operate the power supply with out the properly installed fuse.
Problem Solving: Check DC power. There are two ways to see if DC power is getting to your
Mini-Mill. One, you will hear and feel a fan come on, when the power supply is turned on. If no
fan, check connections and retry. Second, when the power is turned on, the motors should be
torqued and it becomes difficult to turn the lead screws by hand. If the lead screws are easy
to turn (with the power on) you are not getting power to the interface card and the stepper
motors.
© 2012 Minitech Machinery Corp. 13
