Xylotex Drive Board Setup & Operation

Power Supply Connections (below)

e-mail assistance: support@xylotex.com

Almost all board destruction occur during initial setup, while moving the board to a new location or adding connectors because of miswiring and shorts. It is imperative that the wiring to the board and any connectors be double checked, and that the motor phase setup is correct. Read this entire sheet BEFORE starting setup. Failure to read and follow the directions for setup is THE #1 cause of drive destruction. Double check your work at each step below. If in doubt, STOP and e-mail.

You MUST be ready to use your STEP and DIR signal generator (i.e. software such as Mach3, LinuxCNC or TurboCNC). Contact the software vendor for their setup procedures. Below are the board STEP and DIR parameter requirements.


The 4 axis drive board Ver4.03(and above) and 3 axis drive board ver3.00 (and above) use a Vref setting of:
Vref = Motor Amp/Phase * 0.8 (i.e. a 2.0A/phase motor X .8 = 1.6V) Never set Vref higher than 2.0V. Use a cooling fan to help keep the drives cool.

Take static discharge precautions (ground yourself before handling the board). Place board on a non conductive surface away from metal screws, nail heads, metal trim, metal chips or other conductive elements that might be on the setup station.
Do NOT proceed to the next step in the list if you can't successfully complete the current step. STOP & e-mail for assistance
Do NOT let the screwdriver tip come in contact with the circuit board during Vref setting.

Do NOT skip any of the steps below. Do them in order.

[01] Download and read the entire datasheet for your stepper motor drive board and look at pictures on last page.
[02] Set up your STEP signal generator software parameters and be familiar with the software operation
[03] Make sure Power Supply is OFF, and not connected to drive board yet.
[04] Turn ON Power Supply and measure that the voltage does not exceed 30VDC.
[05] Turn OFF power supply, and wait until the supply is fully discharged before proceeding.
[06] Attach Power Supply Vbb & Gnd to Drive Board screw terminals. Note Vbb/GND Polarity when connecting!
[07] Turn ON Power Supply and see red LED light up on stepper driver board.
[08] Check/adjust your Vrefs at TPX, TPY, TPZ � (Black Lead to GND, Red lead to TPx)
[09] Turn OFF Power Supply. Wait until the supply is fully discharged before proceeding
[10] Hook up 24VDC fan if you are going to be using one (and Vbb is 24VDC)
[11] Turn ON power Supply. Fan should start to run.
[12] Turn OFF Power Supply, and wait until the supply is fully discharged before proceeding.
[13] Hook up a stepper motor.
[14] Make sure that the Phases are correct, and that there are no stray wires to cause a short.
[15] Double check connections.
[16] Turn ON Power Supply.
[17] The motor should "lock up" (not turn with finger pressure).
[18] Turn OFF Power Supply, and wait until the supply is fully discharged before proceeding.
[19] Connect the IDC26-DB25 cable to board and Parallel port extension cable from PC
[20] Turn ON the power supply.
[21] Try to jog the motor with software.
[22] Turn OFF Power Supply, and wait until the supply is fully discharged before proceeding.
[23] Hook up remaining motors
[24] Double check connections
[25] Turn ON Power Supply
[26] Test jogging for newly attached motors
SIGNAL Pin SIGNAL Pin
STEP X 2 DIRX 3
STEP Y 4 DIRX 5
STEP Z 6 DIRX 7
STEP A 8 DIRX 9
GND 18, 19, 20, 21, 22, 23, 24, 25



The STEP signal is an ACTIVE HIGH (+,1) signal. DIR must be stable 200 nanoseconds before and after the rising edge of the STEP signal. The STEP signal should be valid for 2 microseconds (uS) or more. You will also need to know the PC parallel port address during setup. This is generally one of the three (0x378, 0x278, or 0x3BC) (hexadecimal).

Important Restrictions
Do NOT adjust the Vref voltages with motors attached or to voltages higher than 2.00V
Do NOT connect or disconnect motors, fans, I/O switches, etc. when the drive board is powered.
Do NOT place a fuse, switch, relay or circuit breaker between the motors and the drive.
Do NOT allow VBB to exceed +35VDC, STEP & DIR lines to exceed +5.0 VDC (keep VBB below 30VDC)
Do NOT connect scopes or any other test devices to the motor leads (A, A#, B, B#)
Do NOT hook up motors without knowing their proper wiring connections.
Do NOT allow drive board overheating. Use a fan


POWER SUPPLY CONNECTIONS

Use caution when working with the wiring. The system input uses High Voltage. This voltage can easily shock and kill.

If you are unqualified to make the assembly, STOP and seek qualified assistance.

NEVER MAKE ANY CONNECTIONS, OR MOVE THE VOLTAGE SELECTION SWITCH, WITH THE 3-PRONG PLUG ATTACHED TO AC POWER!

The power supply is switch selectable between 110VAC and 220VAC using an on-board internal slide switch. Make sure this is properly set before using the supply. If it is necessary to change the position of the switch (for 220VAC use) use a non-metallic instrument to slide the switch (i.e. a toothpick will work fine). NEVER change the position of the selector switch with AC power applied to the supply!

The power cord is built for 110 VAC. 220VAC users must modify the plug end to match their receptacle.
The power supply has a built in fuse. No external fuses or circuit breakers are required.

The power supply DC voltage can be adjusted up to about 27VDC using the pot (near green LED). Keep it at, or below, 27VDC for best performance with the Xylotex drive. The fan is not meant to run with voltages above 27VDC. Set the supply voltage BEFORE making connections to the drive board. NEVER MAKE ANY CONNECTIONS WITH THE 3-PRONG PLUG ATTACHED TO AC POWER!

On the Black AC power cord:
The BLACK wire goes to the terminal labeled: L (AC)
The WHITE wire goes to the terminal labeled: N (AC)
The GREEN wire goes to the GND terminal (circle with inverted T and a couple lines underneath)

The VBB/GND cable:
The RED wire terminated with the fork crimp goes to one of the +V terminals
The BLACK wire terminated with the fork crimp goes to one of the COM terminals

The other end of the VBB/GND cable has pinned crimps.
This goes to the VBB/GND screw terminal located at the lower left-hand side of the drive board (IDC26 header toward you, heatsinks away).

The VBB screw terminal has a VBB and an arrow pointing to it.
It is the one closest to the heatsink of the pair.
The GND has no label and is closer to the mounting hole.
Please see the datasheet for additional pictures.

The RED wire goes to the screw terminal labeled VBB
The BLACK wire goes to the screw terminal NEXT to VBB (not labeled on the board - see datasheet)

MAKE SURE YOUR POWER OUTLET IS GROUNDED PROPERLY.

Make sure all of the screw terminals on the power supply and drive board are tightened before applying power.

Double check all wiring before applying power.

If you have any questions, feel free to e-mail: support@xylotex.com

Instead of plugging and unplugging the power cord to cut power to the system, a recommendation would be to use a multi-outlet that has a switch built in to it. NEVER disconnect power to the drive board by interrupting the DC connection (switch or relay), turn off the AC power instead.