Unpack the ER11 DC spindle, 36V power supply, and mounting bracket assembly kit.
Package contents: (1) ER11 spindle, (1) 36V DC power supply, (1) bag containg 4 M4 bolts, 4 M4 nuts, 4 panhead philips screws, 8 washers, and 4 mounting bracket halves
Not included: (1) 115v AC power cord
Remove the 36V DC power supply from its box, then remove the protective plastic cover that covers the screw terminals.
When the spindle power supply is shipped, the voltage selector is usually set to 230v for European power. Changing this option is simple, using a screwdriver push the switch to the 115v position.
Be sure to verify that the voltage selector switch located on the side of the spindle power supply is set to the 115v setting for the United States
Locate the screw terminals labled "N" and "L" which stand for neutral and live.
Using a number 2 Philips screwdriver loosen the screw terminals labled "N" and "L". Using the supplied AC power cable, strip approximatly a 1/2 inch of the insulation from the wires. Connect the AC power wire that has the imprinted writing to the "N" screw terminal, and the remaining wire to the "L" screw terminal.
Using at least 14 AWG guage wire strip approximatly 1/2 inch of the insulation for use in connecting the spindle to the power supply. If you intend to use heat shrink tubing, slide some onto each of the power wires before soldering the spindle lead wires to the extensions.
After soldering the spindle lead wires the the 14AWG extension, slide the heat shrink tubing over the solder joint and heat the tubing to protect the connection.
Layout the mounting bracket halves and the panhead philips screws
Loosly assemble each of the two bracket halves using the panhead screws. keep the halves loose to enable the insertion of the spindle later in the assembly process
The 2 loosly assembled brackets
Prepare the four M4 nuts, bolts, and the 8 washers for assembly. Place one washer on each of the four bolts.
Insert the 4 bolts into each of the predrilled holes on the brackets
Align the bolts with the holes on the Z axis mounting plate, and seat the bolts through the holes, place one of the remaining washers on each of the bolts.
Once the brackets are aligned tighten the bolts using a hex head key and a wrench
Spindle bracket assembly
Slide the spindle motor through the opening in the bracket assembly and align the bottom of the spindle motor flush with the bottom of the bottom bracket.
Using a number #2 philips screwdriver tighten the bracket screws until the spindle is secured in place.
Completed spindle bracket and spindle assembly
removing and tightening the spindle collet requires 17mm, and 13mm metric wrenches. place the 13mm wrench on the keyed portion of the spindle shaft to secure the shaft. using the 17mm wrench loosen the spindle nut that holds the collet in place. Now you can insert or remove an endmill
insert an endmill into the collet, be sure to insert it into the collet far enough to secure the endmill when tightened, but not so far that the shank of the endmill hangs out the back, or the flutes are covered by the collet.
properly seated endmill in the collet
Hand tighten the collet nut and collet onto the spindle shaft to ensure that the collet nut is not cross threaded.
Firmly tighten the collet nut using the 13mm, and 17mm wrenches. Tighten firmly, but don't over tighten.
Properly seated endmill in the collet, tightened on the spindle ready to cut.
Find the "V+" and "V-" screw terminals, these are the 36 volt output for our spindle.
Connect the ends of the 14AWG power wires to the power supply using a number #2 philips head screwdriver. Black goes to the "V-" screw terminal, and red to the "V+" screw terminal.
Be sure there is nothing around the spindle, double check your wiring, plug the power supply into a surge protector the flip the switch on the surge protector to test that the spindle powers on properly. After testing turn off the surge protector and unplug the power supply.
To connect our spindle to the relay on our breakout board which enables software control of the spindle on/off M-code commands, we will need a length of the at least 14AWG guage wire and a number #1 flathead screwdriver.
Find the negitive spindle power wire connected to the "V-" screw terminal
Disconnect the negitive power wire from the "V-" power supply screw terminal
With the spindle negitive disconnected, connect the length of wire to the now unpopulated negitive screw terminal.
Find the relay screw terminals next to the usb connector on the breakout board
Using a number #1 flathead screwdriver secure the length of negitive power line from the power supply to one of the terminals, and the negitive power line from the spindle to the other. Ensure that the negitive lines are secured and in the correct location on the breakout board, failure to do so can damage the electronics
If you are using the PWM spindle speed controller, simply clip the positive and negitive spindle wires between the power supply and the spindle. than connect the power supply side to the input side of the PWM module marked "+" and "-" respectively. Connect the spindle side of the cliped wires to the screw terminals marked "M1" and "M2" respectively.
Breakout board powered up and connected to the controler,
Complete spindle assembly with PWM and relay controlled on and off.