ADT-HCA1003
Simple type Arc Voltage Adjusting
Controller
Operation Instruction
ADTECH (SHENZHEN) TECHNOLOGY CO.LTD
ADT -HCA1003 Arc Voltage THC
I. Product Introduction
1. Product Model
ADT-HCA1003
2. Chinese Name
Simple 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. W orking 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
y Working voltage: AC220V+5%，50Hz/60Hz；DC24V, over 4A.
y Lifting motor: 24V DC motor or stepping motor (pulse frequency of 1KHz).
y Output current: 1A
y Output power: 20W (DC motor power), the driving power of the stepping motor is
irrelevant to the controller.
y Working temperature: adjuster-10∽60℃
y Initial localization mode: switch mode initial localization; protective cap contact-type
initial localization.
y Operation transmission mode: detection of the enable of arc voltage.
y Ratio of voltage division:100:1
y Precision: ±5V
y External dimensions: L×W×H:195×117×40(mm)
Be sure to read the operation instruction carefully before operation.
1
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 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
2
ADT -HCA1003 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
raised by numerical
control to torch height
adjuster to
Auto initial
alignment
alignment
Arc starting signal
to plasma
No arc voltage after detection
Waiting for success
of arc starting
With arc
Raise arc voltage
enable to
numerical control
and carryout
cutting and
automatic
adjustment
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 height 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, it 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
3
Loading...