ADT-HCA1003
Contents
1. The Company has provide the user with a voltage divider in the parts with the ADT HCA 1003 machine and the voltage divider may be connected in either non isolated voltage division or isolated voltage division and the wiring methods are shown in Fig 3 below AC220V input Actual arc voltage input AC220U 10K geil 33u el Ea 100 1 non isolated voltage C24 e 04771000V g i division output wiring position lt ZT Blt ina LT1OL3 H 0000 17 R20 100 1 djv Vol t Qutput Isolated voltage division output ADTECH ADT HCA1003 Arc Voltage THC Fig 3 Wiring schematic diagram of isolated voltage divider 4 Initial Localization Mode of Torch Height Adjuster There are two localization modes for the design of the torch height adjuster and the cutting torch has the function of anti collision and under any state if the cutting torch collide with work piece or material rest the cutting torch will be raised to reach the purpose of protecting the cutting torch 4 1 Localization Detection and Connection Mode of Protective Cap of Cutting Torch Adoption of the localization requires the metal structure of protective cape and mutual connection when colliding the steel plate ADT HCA1003 has localization circuit that is installed in the controller directly and the connection method of the localization interface is shown as Fig 4 below we A REE ie Localization lead rn L NA fe TICE RIA Hose clamps Matrial2. restipf work piece BE P REREH beth Localization metal clips Farthing i RE lt fi Protective cap 2 Re J Cutting gun ADTECH ADT HCA1003 Arc Voltage THC Fig 4 Localization wiring of protective cap Description A SHIELD terminal in localization circuit is connected to the protective cap of cutting torch B WORK terminal n localization circuit is connected to work piece or material rest C Earthing rod GND must connect to the ground well and the area of cross section shall be larger than Amm D When the plasma is these without high frequency arc firing WORK and GND can be short circuited on isolated localization plate If the plasma is high frequency arc firing it is suggested to adopt the a localization mode of proximity switch Working process of localization of protective cap after the torch height adjuster receives the arc starting signal sent out by numerical control system the cutting torch will descend immediately and when the protective cap touches the steel plate the torch height adjuster will accept the signal and control the cutting torch immediately to raise to the localization height that has been set up and after completion of the localization the torch height adjuster will control the plasma arc starting automatically The mode may be adopted for the plasma of either touch arc starting or high frequency arc firing 4 2 Localization mode of proximity switch When the localization mode of
3. ADT HCA1003 Simple type Arc Voltage Adjusting Controller Operation Instruction ADTECH SHENZHEN TECHNOLOGY CO LTD ADTECH ADT HCA1003 Arc Voltage THC I Product Introduction 1 Product Model ADT HCA 1003 2 Chinese Name S mple type arc voltage adjusting controller 3 Working Application It is applicable to automatic control in the height of cutting torch of plasma cutting machine and is suitable for most of the plasma types imported or made in China 4 Working Principle The theory of the ADT HCA1003 plasma arc voltage adjusting controller is to utilize the characteristics of fundamental constant current of plasma power supply and realize the control in the height of cutting torch through detection of the change in the height of cutting torch during plasma cutting by detecting the change of plasma arc voltage 5 Mode of Arc Voltage Detection Isolated voltage division detection with the ratio of voltage division of 100 1 6 Technical Parameter e Working voltage AC220V 5 SOHz 60Hz DC24V over AA Lifting motor 24V DC motor or stepping motor pulse frequency of IKHz Output current 1A Output power 20W DC motor power the driving power of the stepping motor 1s irrelevant to the controller Working temperature adjuster 10 lt 60 C Initial localization mode switch mode initial localization protective cap contact type initial localization Operation transmission mode detection of the
4. adjuster is as follows Protective cap AC220V localization interface DC 24 NPN proximity V ns switch interface Numerical control CNC interface DC motor interface Arc starting and Arc voltage setting voltage input given interface Stepping motor driving interface Regulation resistance for initial localization height setting Fig 5 Schematic diagram of interface of torch height adjuster 5 1 Power Supply Interface Input power adopts AC 220V and DC 24V power supply and the power of DC power supply depends on the power of DC power supply and notice the positive and negative polarities of DC power supply and do not connect reversed 5 2 Numerical Control ADTECH ADT HCA1003 Arc Voltage THC Photoelectric isolation mode is adopted for the interface of torch height adjuster and numerical control and the wiring control method is shown in Fig 6 below Auto auto actuation Ascending effective actuation Descending effective actuation ar ARCON Localization arc starting effective actuation Feedback output switch signal re Common terminal of control a TRANS COM Fig 6 Schematic diagram of CNC interface Definition and description of various signals A Auto manual signal AUTO automatic input low level manual high level B Ascending UP effective low level C Descending DOWN effective e low level D Arc starting signal ARCON with initial localization effe
5. ctive e low level during Operation carry out initial localization at first and the arc starting is implemented automatically after localization E Arc starting or perforation completion signal ARCTRANS1 and ARCTRANS2 output signal of switching value F Control common terminal COM control common terminal of signal 5 3 Specified Arc Voltage Setting The torch height adjuster adopts a adjustable multi turn potentiometer as the specified arc voltage input and the specified voltage is about 90V when rotating the potentiometer counterclockwise to the minimum value and the specified arc voltage will be increased when rotating the potentiometer counterclockwise with increase of 10V for each full round and the range of specified arc voltage of 90 200V The arc voltage when cutting shall be set up according to the parameter table of the plasma equipment provide and on the basis of the thickness of the materials to be cut and the cutting speed The specified voltage decides the height during cutting and if the specified arc voltage increase the cutting height will increase and under the auto state during cutting the cutting ADTECH ADT HCA1003 Arc Voltage THC height may be adjusted through adjusting the specified arc voltage 5 4 Height Setting Potentiometer of Initial Localization Set IHS Setting the height of the initial localization of cutting torch during arc starting namely after sending out the arc starting signal the cutting
6. enable of arc voltage Ratio of voltage division 100 1 Precision 5V External dimensions LxWxH 195x117x40 mm Be sure to read the operation instruction carefully before operation ADTECH ADT HCA1003 Arc Voltage THC II Detailed function introduction and method of application 1 Introduction of product shape composition and characteristics The product is called as simple type arc voltage adjusting controller and consists mainly of two parts including adjusting control box and isolated voltage divider As shown in the following figure Fig 1 Composition of adjuster ADT HCA1003 torch height adjuster has following characteristics 1 The torch height adjuster has small size and complete function and is often used in micro numerical control plasma cutting machine system and it has such characteristics as easy operation simple wiring and stable performance and so on 2 It may drive DC motor directly and also drive the stepping motor or servo motor with positioning control mode 3 Sample circuit of plasma arc adopts isolated voltage division sampling to realize the complete isolation of plasma power supply and torch height adjuster 4 Full automatic control mode numerical control requires only a starting signal to complete automatic initial localization and arc starting operation and under any state the cutting torch has the function of anti collision to reach the purpose of protecting the cutting torch 5 The mode
7. ght adjuster will raise the cutting torch to the arc starting height that has been set up initially before sending the arc starting signal to the plasma power supply and once the arc starting of plasma power supply is successful the torch height adjuster will detect the arc voltage and send out the arc voltage enable signal immediately and after the numerical control system receive the arc voltage enable signal t begins to control the operation of machine tool and open the automatic adjustment function until completion of the cutting 3 Function and Wiring Method of Isolated Voltage Divider The change of plasma arc voltage must be detected when carrying out the control of arc voltage The arc voltage of plasma is the voltage between electrode and the ground Anode of the ADTECH ADT HCA1003 Arc Voltage THC plasma power supply output s connected to the ground and the cathode s connected with the electrode of the cutting gun therefore the voltage on electrode s negative value and the absolute value of arc voltage when cutting is larger than 100V generally and because of high voltage it must carry out the voltage division to implement control in control circuit Isolated voltage divider makes the plasma arc subject non isolated voltage division and after processing of isolated circuit it is connected with the torch height adjuster so the disturbance of arc voltage after isolation processing to the torch height adjuster is small
8. of initial localization may use the protective cap or proximity switch type positioning and the two modes can be used at the same time 2 Introduction of Basic Functions and the Working Process of Automatic ADTECH ADT HCA 1003 Arc Voltage THC Adjusting of Torch Height Adjuster The torch height adjuster can realize the control in rising and falling of cutting torch through control in the operation of DC motor or stepping motor and it has the control interface with numerical control system to realize automatic control and realize the automatic control in the height of cutting torch through detecting the actual height of cutting torch by means of detection of the change in arc voltage Completion of Arc starting signal alignment raised by numerical With arc Raise arc voltage control to torch height Auto initial Arc starting signal FI Fe a i adjuster to alignment to plasma numerical control and carryout No arc voltage after detection cutting and automatic Waiting for success adjustment of arc starting Figure 2 Schematic diagram of cutting process The cutting process is shown in figure 2 and when the numerical control system carry out plasma cutting the cutting program will set out the arc starting order and after the torch height adjuster receive the signal it begin to lower the cutting torch and after the ting nozzle touch the steel plate to be cut and the positioning signal is sent out the torch hei
9. proximity switch is adopted the users shall design the fixture according to the concrete schematic diagram of the cutting torch fixture provided by the Company Initial localization of all of the plasma no matter on water cutting or underwater cutting may adopt the kind of localization mode The proximity switch shall be under proximity state prior to localization and once it is detached the cutting torch will be raised immediately Working process of adoption of the proximity switch localization after the torch height adjuster receives the arc starting signal sent out by the numerical control system the cutting torch will descend quickly and when it touches the steel plate the proximity switch will break away the proximity point and after the torch height adjuster receives the signal it will control the cutting torch to raise to the localization height that has been set up during the process of the raising the proximity switch will reset automatically after completion of the localization the 6 ADTECH ADT HCA1003 Arc Voltage THC torch height adjuster will control the plasma arc starting automatically The mode is applicable to the initial localization of all the plasma The torch height adjuster adopts NPN proximity switch and see the following section for the wiring method 5 Function of Various Interface of Adjustment Box and Wiring Method As shown in Fig 5 description of various connecting terminals or the torch height
10. r arc starting Special suggestion 10
11. ting 5 9 Stepping Motor Driving Output Interface As shown in Fig 7 below ADTECH ADT HCA1003 Arc Voltage THC Stepping driver Two wiring methods determined according to the wiring methods of stepping motor drivers DIR PULSE Stepping driver 5V Fig 7 Stepping motor driving interface When using the stepping motor DIR is the direction signal and PULSE stands for drive pulse signal and the concrete wiring method is subject to the stepping motor driver Output pulse frequency during operation is KHz and if the users want to alter the frequency please contact the manufacture in advance Note the product is of the simple type so limit interface of lifting motor is not provided and if the users want it please think over it III Suggestions 1 When the protective cap is used for localization we suggest that the users shall install the anti collision fixture at the same time and connect the localization mode of protective cap so that during the actual usage if the protective cap fails to contact the cutting plate well the proximity switch localization is effective at the same time so it is propitious to protecting the cutting torch In case of installation at the same time by two localization modes the anti collision functions of two localization shall be effective 2 Shielded cable shall be adopted for connection from isolated voltage division plate to torch height adjuster and shall be separated from the cable fo
12. torch will descend until detecting the localization signal such as the protective cap contacts the work piece during localization and then ascend The height when rotating the potentiometer clockwise will decrease and will increase when rotating the potentiometer counter clockwise and the latter is controlled through the mode of time delay Arc starting of different plasma power supply requires different height and the users shall adjust it according to the actual conditions 5 5 Protective Cap Localization Interface See description in section 2 for the detailed wiring method of protective cap 5 6 Proximity Switch Localization Interface NPN proximity switch is adopted with COM terminal as the negative terminal and VCC terminal as the positive terminal and SINGLE signal is connected with the signal input terminal of proximity switch Please implement short circuit connection if the proximity switch is not used for localization 5 7 DC Motor Interface When the DC motor is connected the DC motor under 20W may be driven directly 5 8 Arc Starting and Arc Voltage Input Interface ARC and ARC are arc voltage input interface and is connected with the plasma arc voltage signal output by isolated voltage division of voltage divider and ARC is connected to the positive terminal of arc voltage and ARC is connected to negative terminal of arc voltage and the arc starting signal is a group of switch output of relay and is closed during arc star
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ADT HCA1003