Instructions

wired, grounded connector cord for your source, the machine will operate anywhere in

the world without a transformer. This has been true for all Sherline machines built since

1994.

Electronic Filter for CE Approval

Sherline now offers an in-line electronic filter between the DC motor and speed control

and the incoming AC current that suppresses emissions to meet CE standards. All

machines shipped to countries requiring CE approval will be supplied with these filters

already installed and shipping boxes properly marked. This adds an additional $45.00 to

the cost of the lathe or mill, but it does allow us to apply the CE label to our product. If a

machine is purchased without this filter, we cannot guarantee that it will be able to make

it through customs in the subject country. Included with the installed filter is a certificate

of CE compliance.

Stepper Motor Cord Precautions

Do not disconnect the cable at the stepper motor end unless absolutely necessary. The

connector was designed for limited use and can be easily damaged. When connecting and

disconnecting the motors, always use the round plugs that connect to the driver box

cables. Do not pull on the wires to unplug the connectors—Grip the plugs themselves.

We also recommend use of a plastic tie wrap in in place of one of the motor mounting

screws to provide strain relief on the cable to protect this connection.

CAUTION—Manual Adjustments Using the Handwheels

MANUAL MODE: A DC motor acts like a generator when cranked by hand. When

using the machine extensively in full manual mode you must first turn off the power

supply to the motors and then physically disconnect the stepper motors from the driver

board cables to prevent the generated voltage from damaging components on the board.

Cover the ends of the motor connecting plugs with masking tape to protect them from

debris. When reconnecting, make sure the plugs are clean and fully seated. Constant

plugging and unplugging is not good for the connections, so avoid doing so unless

absolutely necessary.

CNC MODE: When operating in CNC mode you do not need to disconnect the stepper

motors when hand cranking slowly and over short distances to manually position the

slides. The motors are locked up when power is on, so the power switch to the drivers

must be in the OFF position. For longer positioning travels it is easier to use the Jog

Mode and move to approximate position electronically. Final adjustment can then be

made with the handwheels (with power turned OFF). To keep from generating a

potentially harmful back-current to the driver board, do not turn the handwheels

manually faster than about 1 rotation per second when the stepper motors are connected

to the driver board.

Lubrication

CNC machines require more attention to keeping the leadscrews properly lubricated than

manual machines. When you crank the handles by hand you can quickly realize that a

slide is going dry because you can sense the results of the extra drag. A CNC machine