Digital Dream NCH02 Manual de usuario
Handheld Motion Controller
For Engraving Machine
NCH02
User’s Manual
Digital Dream CNC Co,. Ltd.
www.ddcnc.com
The version of 20180915
1 NCH02 Motion Controller Introduction
1) Max. 5 Axis,3-5 Axis Optional;Max. 125Khz per axis;
2) 2-4 Axis linear interpolation,any 2 axis circular interpolation;
3) 5 opto isolated digital outputs,8 opto isolated digital inputs;
4) Analog spindle control 0-10V spindle control (can be modified as PWM output);
5) 24VDC power input, minimum 1A;
6) 3.5 inches TFT screen, resolution ratio: 480x320;19 user keys;
9) USB flash disk support for G code file input;
10) The control system can preview the process path before machining,and it makes the system more
steady,working smoothy and precise;
11) Support the Standa�rd MPG or the NVMPG which Digital dream made;
12) Acceleration/Deceleration Mode: S curve;
13) Support un-limited size file for machining;
14) Manual/Automatic machining function;
15) Support the operation to Start a G code from a specific line;
16) Support for “Power Cut” recovery. Data is automatically saved;
17) Support time-lock function;
18) Automatocally Probe function;
19) Supporting Homing,Go to Zero,workpiece origin position saving;
20) Supporting downloading and uploading all the parameter setting of the controller.
Digital Dream has a 10 years history in the numerical control industry, specializing in the research, devel-
opment and production of various CNC (Computer Numerical Control) systems. DigitalDream aims to combine
high quality and high reliability with affordability. We produce 1 axis to 6 axes CNC system.
Thank you for choosing digital dream’s motion controllers.With a lots of examples and charts,this manual
will describe the features,functions and every operations of our controllers.Pls read this manual carefully before
any assembling and using.Incorrect handling can result in injury and damage to persons and engraving
machine.Pls keep the manual carefully for convenient to read it at any time in need.
NCH02 is very professional 3-5 Axis CNC Motion Controller which is based on embedded system.NCH02
operates as a standalone system with handheld Pendant without the need of a computer,and with a pendant,it
makes users very convenient to opreate the machines.Our controller adopts Embedded Operating System,by
which the controller will never get virus-infected.And the controller adopts look-ahead algorithm by which the
the controller can read more ahead 30-lines G-code than the operating.All the features guarantees high preci-
sion,accuracy and reliability.And the size is very small,oepreation is very easy,very suitable for all size of
Engraving machines,Milling machines and cutting machines and so on.
1.1 Introduction of Product
1.2 Performance parameter of the NCH02
Page -1 NCH02 User’s ManualDigital Dream Motion Controller
The NCH02 motion controller contains the handheld motion controller,wiring board,and HDMI digital
high-definition transmission cable.
The handheld motion controller and wiring board are communicated by 2 Meter 37 pins HDMI digital
high-definition transmission cable which is shielding twisted-pair cable to avoid interference.
Picture 1-1 shows the appearance and size of NCH02 Pendant.
Picture 1-2 shows the appearance and size of NCH02 Wiring Board.
1.3 Appearance, Structure and Size of Product
NCH02 User’s ManualPage -2Digital Dream Motion Controller
Picture 1-2 The NCH02 wiring board Size
70 mm
23.5 mm
100 mm
Picture 1-1 NCH02 Pendant Size
108 mm
30 mm
168 mm
23 User’s Keys
3.5’’ (480*320 ) LCD
Picture 1-3 shows the Installation size of NCH02 Wiring Board.
Picture 1-4 shows the 2 side pictures of NCH Wiring Board.The one side is for the MPG interface;and the
other side is the LED indicators and USB port for the communication with the NCH02 Pendant Controller.
There are two LED indicatiors,the red one is for the power,the green one is for the communications with
the NCH Pendant controller.
NCH02 User’s ManualDigital Dream Motion Controller Page -3
Picture 1-3 The NCH02 wiring board Install Size
Picture 1-4 The NCH02 wiring board 2 Sides Picture
The LED Indicatior and USB Port for the pendant The MPG Port
65 mm
4 mm
65 mm
When operating the NCH02 Controller, the users will come across some English abbreviations. Here a list
with explanations:
FRO: Feed Rate Override
SRO: Spindle Rate Override
SRJ: Jog Speed Setting
F: Feed rate, unit is mm/min
S: Spindle Speed, unit rev/min.
X: The coordinate code of the X axis.
Y: The coordinate code of the Y axis.
Z: The coordinate code of the Z axis.
A: The coordinate code of the A axis
BUSY: The system is busy. You still can adjust FRO and SRO
READY: READY mode, any operation can be done
RESET: Reset mode, controller is in “OFF” mode, no operation can be performed
CONT: Continuous mode, each axis can be manually jogged with the arrow keys
Step :Manual Step Mode，each axis can be jogged in defined steps
MPG: MPG mode. Operate the machine with the MPG (Manual Pulse Generator)
AUTO: Run G code. Auto is showing when file is processing
Keep away from exposure to moisture or water. This product contains sophisticated electronics
and must not get wet.
Wiring warning: the IO input terminal of this controller supports equipment with source power (such as
Inductive Proximity Switch ). When using this kind of equipment, pay attention to the polarity. Avoid the
+terminal to be connect with GND. This controllers has analog output for spindle control (0-10V). Please avoid
this terminal to ever connect with GND as damage to the controller may occur.
Operation warning. Please observe all security measures when operating the machine. The ESTOP
must be connected and properly labelled. In case of a problem, press the E-stop at once to avoid
damage to humans, animals and the equipment.
High voltage danger. The NCH02 is connected to 24VDC. Obey and follow the electricity safety rules
of your country when connecting this equipment.
1.4 Explanation of Abbreviations
1.5 Notes and Warnings
NCH02 User’s ManualDigital Dream Motion Controller Page -4
2 Wiring Board
NCH02 User’s ManualPage -5
The circuit switching wiring board provides screw terminals for power (24VDC), input signals, spindle
control, pulse and direction for X/Y/Z/A/B stepper/ servo drives, MPG, input and output ports as well as an USB
input. Please see the reference picture 2-1 in detail.
Input Ports Output Ports
Spindle Ports
X/Y/Z/A/B Stepper/
Servo Ports
MPG Ports
Power Supply
24VDC
USB Port
Picture 2-1 Wiring Board Rear view
Picture 2-2 Board Power Structure
As the picture shows, the wiring section of the controller has Stepper/Servo Ports,Spindle Control
Ports,MPG ports,Output and Input Ports,and Power supply Ports,as well as USB ports.
The Inside power solution in the field of the Industrial automation is always very complicated, there is a
lot of the GND, now we descript the structure of the power structure as below:
The power structure as the Picture 2-2,main power supply input ,MPG module and Power and USB port
share common GND, stepper control module and Input&Output module and Spindle control module share
common GND, between the two sector there is photoelectric isolation. Inside of the board, there is GND as
common-, no need to connect external power supply.
NCH02 User’s ManualDigital Dream Motion Controller Page -6
Picture 2-1 USB port
Picture 2-2 The Input Ports definition
As the following picture showed,by the USB terminal block is USB port, you can connect with handheld
controller.
As the Picture 2-1 showed, The power supply port.The Input voltage is 24VDC, and the power is not less
than 20W. The positive and negative connection of the power supply see as the silk printing.
2.1 USB Port
2.2 Main power supply port
2.3 The Input Ports
USB Port
GND
INP1
INP2
INP3
INP4
INP5
INP6
INP7
INP8
GND
12V
Picture 2-4 Probe/Estop/ ordinary fretting switch input connection
Picture 2-5 2 Lines Proximity Switch Connection Method
Picture 2-3 Internal structure diagram of the input port
NCH02 User’s ManualDigital Dream Motion Controller Page -7
As the Picture 2-2 showed,Inputs ports has already defined.The Users can use them as E-stop,Probe,limit-
ed/Home functions and so on.The ports is a common negative interface,which can be connected with a micro
switch,a 2 line proximity switch or a NPN type 3 line proximity switch.All the ports are isolated.And the
internal structure is as following Picture 2-3.
And the E-stop,Micro switch,2 line proximity switch connection methods refered to Picture 2-4.
NCH02 User’s ManualDigital Dream Motion Controller Page -8
3 lines Proximity Switch connection method as following Picture 2-6 shows. Brown cable connect with
12V,Black cable connect channel, blue cable connect with GND1.
3 lines proximity switch only NPN type is avaiable for the NCH02.
Picture 2-6 NPN 3 lines Proximity Switch connection drawing
Picture 2-7 NPN 3 lines Proximity Switch example
NCH02 User’s ManualDigital Dream Motion Controller Page -9
Picture 2-8 The Output Ports definition
Picture 2-9 General Output Port Connect with a Relay
As the Picture 2-8 shows,the interface is an open-ground interface,which can be absorbed not more than
50mA current.The relay with a absorption current of no more than 50mA can be driven directly. If it's more than
50mA, and it is recommended to use a current amplification, for example ULN2803 chip.
The Picture 2-9 is for external power relay method.
2.3 The Output Ports
OUP5
OUP4
OUP3
GND
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