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Lerdge-X Motherboard Basic Wiring Instructions

日期: 2017-07-03
浏览次数: 57878


Lerdge-X Motherboard Basic Wiring Instructions


Lerdge-X Motherboard Basic Wiring Instructions


Lerdge-X Motherboard Basic Wiring Instructions


1. Power supply wirings

There is a dedicated power cable supporting with the motherboard. The power cable is separated into one red line and one black line. The red line is connected with DC 12V/24V power positive, and the black one is connected with the negative.The power interface on the board side is with buckle to prevent incorrect insert, but still need to pay attention to that. The correct power wiring as shown below.


Lerdge-X Motherboard Basic Wiring Instructions


2. Motherboard motor drive module socket introduction

Lerdge-X motherboard motor drive port adopts the same interface definition with pololu module. The motherboard driver interface definition as shown below



Lerdge_X主板基本接线使用说明


Port

Description

Note

ENABLE

Motor enable control port, the system uses low-level enable program.


When the motor needs to be enabled, the ENABLE port outputs a low level (0V)


When the motor needs to be disabled, the ENABLE port outputs a high level (5V)


The port control logic can not be modified.

MS1、MS2、MS3

Motor drive module subdivision control ports. Please check the table below for the specific configuration method.

Insert the jumper cap is high level (5V) H

Remove the jumper cap is low level (0V) L

RESET

Motor drive module reset port. Connected to 5V through 20K resistor.

Uncontrollable

SLEEP

Motor drive module sleep port, linked with RESET

Uncontrollable

STEP

Motor drive pulse control port

The maximum frequency of driving pulse is 200KHz


Pulse high level duration> 2.5us

DIR

Motor drive module direction control port


VIMOT

Stepper motor drive voltage input positive

8~35V,  consistent with the motherboard power supply voltage

VIGND

Stepper motor drive voltage input negative


VCC

Motor drive module logic power positive

5V

GND

Motor drive module logic power negative



The 3 pairs of pins in the mainboard motor module sockets can be used to set the subdivision of the motor drive module. For the specific setting method, please refer to the drive module introduction table.


Lerdge-X Motherboard Basic Wiring Instructions

Lerdge-X Motherboard Basic Wiring Instructions

Lerdge-X Motherboard Basic Wiring Instructions


3. Install the motor drive

Note: When plugging in the motor drive module, please turn off the power. Do not operate while power is on. Please distinguish the direction of the motor drive module, or it may damage the board!!!

To improve the user experience, the colors of the Lerdge motor driver pins are corresponding to the colors of the motherboard driver sockets. Please insert the drivers correspond to the color, do not insert the wrong direction or the wrong place! ! !  The Lerdge drivers are recommended.


4. Connect the stepper motor

Before connecting the stepper motor, need to check the motor line order. The normal two-phase stepper motor has 4 drive lines, a pair of two, namely a motor coil. Usually, the motor manufacturer will provide the line order drawing. As shown in the following figure, the AC is a group and the BD is a group. Respectively, the terminal numbers 1 and 3 is a group, 4 and 6 is a group.


Lerdge-X Motherboard Basic Wiring Instructions


If there is no drawing, first rotate the output shaft of the motor by hand and feel the resistance when the motor rotates. Then, shorten any one of the four lines of the motor with the other three lines, respectively. For each short circuit, rotate the motor output shaft again by hand. When the rotation resistance of the output shaft is obviously increased, it can be determined that two drive lines short-circuited together are output by one coil of the motor, they are a group, and the other two as another group.



Lerdge_X主板基本接线使用说明



After determining the line grouping, mark the two groups of lines as Group A and Group B respectively (Just assume one group is A , then the other group is B), and then connect the two motor wires of Group A respectively to the A + and A- of a motor port on the mainboard (there is no need to distinguish between A + and A- of the two lines). Connect the two motor wires of the Group B to the B+ and B- of the same motor port  (No need to distinguish B+ and B-). To change the position of two motor lines in any group can change the rotation direction of motor output shaft. For non-corexy printer  users, the motor direction can be directly modified in the system. However, users of corexy models need to pay attention that sometimes need to adjust the motor's line order to to change the corexy running direction.


Lerdge-X Motherboard Basic Wiring Instructions


5. Connect the limit switch

First of all, explain what do the limit switch normal open and normal close mean.

Usually a micro switch has 3 ports, namely C terminal, NO terminal and NC terminal, respectively means

C: Common port

NO: Normal Open

NC: Normal Close

As shown below



Lerdge_X主板基本接线使用说明


When using C and NC, the C terminal and the NC terminal is connected together when the switch is not triggered. And when triggered, C and NC disconnected. This connection is Normal Close.

When using C and NO, the C terminal and the NC terminal are disconnected when the switch is not triggered. When the switch is triggered, the C terminal and the NO terminal are connected and conducted together. This connection method is Normal Open.



When using the Lerdge-X motherboard, if you use the Limit Switch module manufactured by Lerdge, you can directly connect the module to the limit switch interface on the motherboard. The trigger mode is high-level trigger, namely, the system will judge as the limit switch triggered when the high-level input, and low level input is not triggered.


If the limit switch is used directly, the limit switch needs to be connected normally open. When the motherboard side is connected with "s" and "-", the limit switch trigger mode is set to low level trigger in the system.

 

Whether the limit switch wiring is correct or not can be checked in the limit switch trigger mode interface as shown below


Lerdge-X Motherboard Basic Wiring Instructions


Check the schematic icon of the limit switch. When the limit switch is triggered, the small horizontal line of the icon will be pressed down. When the limit switch is not triggered, the small horizontal line will be up.


6. Connect the print head and heating block

Use a small flat-blade screwdriver to loosen the two screws on the terminal of the heat head, and then peel the heating wire for some length till the copper wire inside exposed, and insert the copper wire into the terminal, tighten the corresponding screws. Make sure the heating wire will not fall out. The heating wire is connected in positive and negative freely. Print head heating block power can not be greater than 80W. Please pay attention not to short-circuit the wiring, or it will burn the power port when turn on the heating function.


7. Connect the heated bed

If use Lerdge-X motherboard with the heated bed, the heated-bed adapter module and heated bed power expansion module are needed. The specific wiring as shown below


Lerdge-X Motherboard Basic Wiring Instructions

About heated bed:  

If want to use Lerdge-X motherboard with heated bed, the heated bed adapter module and  high-power hot bed module are required.



8. Connect the cooling fan

Please note the cooling fan function definition when connecting fan

Model cooling fan interface: controlled by G code, used for print model cooling.

The print head throat cooling fan interface: controlled by the temperature and heating behavior (when the print head temperature is higher than 40 ℃ or the heating function is on, the fan starts working, otherwise the fan stops working).

Pay attention to the positive and negative ports, wrong connection may result in fan damage. The voltage of this port is the same as the voltage of the motherboard. If use 24V power supply, please use 24V fan. If 12V power supply, then 12V fan.


9. Connect the print head temperature sensor

Temperature sensor port, regardless of positive and negative, ONLY use the NTC100K B3950 thermistor. If need to print high temperature materials, you can buy the high temperature thermistor and high-power heater from the links below.


1、HT-NTC100K Thermistor Temperature Sensor:


2、Heating Tube


10. Connect LED lighting strip

Connect the LED light strip to the LED port on the board, Please pay attention to distinguish between positive and negative. The light strip current used should be no more than 1A. The voltage of the LED strip interface is the same as that of the power supply. If use a 24V power supply, please use 24V LED light strip, or use 12V LED light strips connected in series. If 12V power supply, then 12V LED strip. The LED lighting strip can be ordered here.


1、White Light LED Strip


11. Connect the LCD screen

Use the cable to connect the LCD module with the motherboard. Make sure the blue side upwards and the cable without any skew when connecting the cable. DO NOT insert or remove the cable/LCD screen when the power is on. Do not turn the cover of the screen interface violently, or it will make it awkward!


Lerdge-X Motherboard Basic Wiring Instructions

Lerdge-X Motherboard Basic Wiring Instructions


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