A-Hand Technology PC508 User manual

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
Address: No. 88, Tangzhuang Road, Suzhou Industrial Park, China NO. 1
Tel: [phone]
http:// www.a-hand.com
Safety Precautions
Warning: For your safety:
Arc welding dangerous
In order to avoid unnecessary casualties, please protect your and other people's safety, children
should be away from the welding site, the operator must wear protective clothing and glasses!
Electric shock will hurt you
Before using the device, the power supply and water containers must be reliably grounded!
In the process of welding, the temperature of electrode and workpiece is very high, please do not let
your skin and damp cloth touch these hot parts, in order to prevent your hands from being injured,
please put on dry gloves for construction!
Use dry insulating materials so that you and your workpieces can be isolated, and the insulating
material should have sufficient surface!
In the process of automatic welding, the temperature of the electrodes, welding head, nozzle and
torch is respectively quite high!
Ensure that the working cable is well connected to the welded parts, and it should be close to
welding joints of the workpiece!
The workpiece and the welded metal need to be grounded well.
In the safe operation mode, please check whether the electrode, ground clamp, welding
cable and welding machine are intact, replace the damaged components!
The electrode can not be cooled by water!
Do not touch the conductive parts connected to the two welding electrodes at the same time!
Arc rays may cause injury on the human body
When it comes to welding, please wear the safety goggles to avoid hurt caused by sparks and arc
rays!
Please wear protective clothing made of flame-retardant materials to ensure that your skin is kept
away from arc radiation damage!
Smoke is harmful to health!

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
Address: No. 88, Tangzhuang Road, Suzhou Industrial Park, China NO. 2
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The smoke dust produced during welding is harmful to health, so try to avoid inhaling the smoke
dust!
The shielding gas used for welding may be inhaled at the expense of people's health, so the welding
site must be well-ventilated in order to ensure that the inhaled air is clean!
Welding sparks may cause fire
Keep the combustible away from the welding spot, if the combustible cannot be moved, then use the
flame-retardant materials to cover them!
Remember that welding sparks and hot metal are very easy to splash, a fire extinguisher must be
prepared!
If you use compressed air in the welding process. Please take necessary protective measures!
When welding is stopped, the electrode should not touch the workpiece, so as to avoid overheating
of the workpiece!
Damage of gas cylinder will cause the explosion
Use a good compression cylinder, and the intact control valve must be installed, all of the air tubes,
filters should be intact and proper!
The cylinders must be installed uprightly, and the cylinder needs to be fixed!
Prepare enough space to install gas cylinders so as to avoid collision with each other, resulting in
physical damage!
The gas cylinder must be away from the welding site or other fire sources!
Prohibit the use of electrodes, electrode clip, or other alive parts to contact with gas cylinders!
When you open the cylinder valve, your head and face must not face the exit of valves!
Do not remove valve’s protection cap and the handle, unless the gas cylinders are in use or ready to
be used!
The noise exceeded 70 dB will cause permanent hearing damage
Please take the appropriate earmuffs or earplugs!
Ensure that the noise will not impact other personnel passing the working area!
Electromagnetic interference may affect the normal use of welding equipment
The welding equipment must have a regular maintenance!
The wire should be as short as possible, and should be close to or touch the ground!

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
Address: No. 88, Tangzhuang Road, Suzhou Industrial Park, China NO. 3
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Protection of other conductors and equipments can reduce the effects of radiation!
When welding equipment running, it could produce electromagnetic interference with
surrounding electronics
The welding equipment at work must be kept away from the electronic products that may be
interfered!
If it is used near the computers and electronic products susceptible to interference, associated
electronic equipments should be turned off!
Danger may be caused by violating operational procedures
Be sure to read instructions carefully before using the equipment!
Prohibit the use of the equipment by layman!
Our instruction makes a description of safe use of the equipment for you, which can
reduce the occurrence of the accident, so please carefully read the instructions before using the device.

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
Address: No. 88, Tangzhuang Road, Suzhou Industrial Park, China NO. 4
Tel: [phone]
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Technical Parameter
Power Source Model
PC508
Welding Power Supply
420A
Open Circuit Voltage
98V
Input Voltage
38010% 50 HZ
Max Power
23.1KVA
Torch Cooling
Water cooling
Display
5-inch color LCD
Control Function
High-resolution DC /pulsed current control
Current gradient control
AVC control
OSC control
Constant/ pulsed speed welding traveling control, achieve
sector-able traveling speed control function
Constant / pulsed speed wire feed control, achieve sector-able wire
feed speed control function
Shielding gas , cooling water pump automatic control
USB Interface
It can be used to download and store user program (optional)
Number of program stored
100
Real-time data display in the
process of welding
Welding current display
Welding process show
Welding arc voltage display
Number of sector
32
Automatic diagnosis system
Error display
Dimension
630＊415＊645（mm）
Weight
64 KG

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
Address: No. 88, Tangzhuang Road, Suzhou Industrial Park, China NO. 5
Tel: [phone]
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I Device Profile
1. Whole Structure
1.1 Front structure of device
1. Dust cover, prevent dust from polluting the equipment
2. LCD display, operating interface
3.Program lock, avoid illegal changes
4.Handle, for moving the devices
5. Shockproof caster wheel
6. function key --- editing keyboard for the main menu, edit and modify the program
7. function key --- weld / simulate option for operate
8. auxiliary key --- help and tips
9. function keys --- up-select and down-select user programs, as well as modify user programs
10. Select letters leftward
11. Select letters rightward
12. Select upward, move a line once
13 Select downward, move a line once
14. Selection of program number, increase or decrease value
15. Selection of program number, increase or decrease value
16. Move the cursor, scroll one page upward once
17. Move the cursor, scroll one page downward once
18. Remote control interface
19.AVC/OSC control interface
20. Welding head movement interface
21. Wire feed interface
22. Shielding gas outlet port
23. ARC voltage Feedback interface
24. Cathode outlet
25. Anode outlet
26. Cooling water outlet

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27.Cool water inlet
28. Water tank
2Back structure of device
29．Hot-wire power supply interface (option)
30．Shielding gas inlet
31．Power switch
32．Power inlet

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
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3Structure and Function of Remote Control
Symbol
Functional Description
Program reset
Start welding
Displayer, display the current program number
Program selection button, select the desired program (press
once, ±according to the order call for the next program)
Stop button to stop welding (press once to stop welding,
welding head back to start position; press twice, and
completely stopped)
Downslope button (press once, weld current slope down to 0,
then welding head back to start position)
In the case of idlesse , welding head rotate forward, used to
adjust the position
In the case of idlesse, welding head rotate reverse, used to
adjust the position
Indicator LED
Manual wire feeding function key
Wire feeder Reverse manual y in the case of idlesse
Tungsten needle enhancing
Tungsten needle dropping
Tungsten needle swing inward
Tungsten needle swing outward
Test gas / current increase, in the process of welding, press
the button once, the current increases ΔI by parameter
settings , in the case of idlesse press to test Shielding gas
Flowing
Test water / current decrease, in the process of welding, press
the button once, the current decreases ΔI by parameter
settings

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II System Parameter
Content
Label
Content
Label
DIA—Diameter of tube
DIA
HCd —Welding Head code
RN
IMd —Current mode
K21
RMd —Rotation mode
K31
WF —Wire feed or not
K41
WCd —Wire feeder code
SN
AVC —AVC control
K51
ACd —AVC Module code
HN
OSC —OSC or not
K61
OCd —OSC Module code
WN
SEC —The number of sector
B
RDg —Rotation degree
N20
GPre —Gas pre- shield time
T10
GLag —Gas lag-shield time
T11
IPre —Pre-melting current
I20
TPre —Pre-melting time
T20
TUp —Up-slope time
T21
TW —Initial electrode height or not
K53
TDn —Down-slope time
T25
IEd —Arc shut current
I25
Page 2
TH —electrode initial height
H50
TLH —Torch Lifting height
H51
RDi —Rotation direction
K32
HH —Head homing or not
K33
WMd —Wire feed mode
K42
WSDg —Wire feed start degree
N40
WEDg —Wire feed shut degree
N41
WBT —Wire back extraction time
T41
AT —AVC sampling time
T50
OSDg —OSC start degree
N60
ADi —AVC direction
K55
Page 3
DI —Current increment
DI
DV —Rotation speed increment
DV
DW —OSC offset
DW
DH —Arc-length increment
DH
Page 4
SP —Sector point
Nn
IPT —Current peak value time
T22
IBT —Current base value time
T23
PI —Peak current value
I22
BI —Base current value
I23
PRS —Peak Rotation speed
V32
BRS —Base Rotation speed
V33
PWS —Peak wire feed speed
V42
BWS —Base wire feed speed
V43
AU—AVC tracking voltage
V50
OW —OSC width
W60
OS —OSC speed
V60
OES —OSC Edge stay
T60
ES —Edge synchronization
K62
SMd —Sector exchange mode
K22
*Note: parameters vary with the type of each device model;
After the fourth page, each section for one page;
OSC offset: When using the 85E welding header, OSC offset should be greater than 0,
otherwise the offset will not be achieve.

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
Address: No. 88, Tangzhuang Road, Suzhou Industrial Park, China NO. 9
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〖Pulse current, pulse traveling, pulse wire feed synchronization I〗
〖Wire feeding, traveling and pulse-current synchronization II〗

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III Operation of Equipment
3.1Set parameters through the control panel
Switch on the power switch, devices enter into idle mode, at this time the host operating
interface sub-screen displays the following contents line by line, the specific content color is related to
the parameters, in the case of no wire feeding, the item of base speed wire feeding, etc. is displayed as
dark, indicating that this item does not active, parameter value shown in starting is the value of the
last time been used.
Content
Label
Content
Label
DIA—Diameter of tube
DIA
HCd —Welding Head code
RN
IMd —Current mode
K21
RMd —Rotation mode
K31
WF —Wire feed or not
K41
WCd —Wire feeder code
SN
AVC —AVC control
K51
ACd —AVC Module code
HN
OSC —OSC or not
K61
OCd —OSC Module code
WN
SEC —The number of sector
B
RDg —Rotation degree
N20
GPre —Gas pre- shield time
T10
GLag —Gas lag-shield time
T11
IPre —Pre-melting current
I20
TPre —Pre-melting time
T20
TUp —Up-slope time
T21
TW —Initial electrode height or not
K53
TDn —Down-slope time
T25
IEd —Arc shut current
I25
Page 2
TH —electrode initial height
H50
TLH —Torch Lifting height
H51
RDi —Rotation direction
K32
HH —Head homing or not
K33
WMd —Wire feed mode
K42
WSDg —Wire feed start degree
N40
WEDg —Wire feed shut degree
N41
WBT —Wire back extraction time
T41
AT —AVC sampling time
T50
OSDg —OSC start degree
N60
ADi —AVC direction
K55
Page 3
DI —Current increment
DI
DV —Rotation speed increment
DV
DW —OSC offset
DW
DH —Arc-length increment
DH
Page 4
SP —Sector point
Nn
IPT —Current peak value time
T22
IBT —Current base value time
T23
PI —Peak current value
I22
BI —Base current value
I23
PRS —Peak Rotation speed
V32
BRS —Base Rotation speed
V33
PWS —Peak wire feed speed
V42
BWS —Base wire feed speed
V43
AU—AVC tracking voltage
V50
OW —OSC width
W60
OS —OSC speed
V60
OES —OSC Edge stay
T60
ES —Edge synchronization
K62
SMd —Sector exchange mode
K22
3.2 Editing Parameters F1
In idle mode, unlock programs lock, press the to get operating tips, as shown in figure,
Press the key to enter editing state, at this time, the cursor is at the position of program number |.

Suzhou A-hand Technology Co., Ltd. (215021) Instruction
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Program number 00 TEST Weld
DIA—Diameter of tube
DIA
38︱
HCd —Welding Head code
RN
S112
IMd —Current mode
K21
Pulsed
RMd —Rotation mode
K31
Pulsed
WF —Wire feed or not
K41
No
WCd —Wire feeder code
SN
97
AVC —AVC control
K51
Yes
ACd —AVC Module code
HN
21
OSC —OSC or not
K61
Yes
OCd —OSC Module code
WN
21
SEC —The number of sector
B
2
RDg —Rotation degree
N20
360
GPre —Gas pre- shield time
T10
3
GLag —Gas lag-shield time
T11
3.2
IPre —Pre-melting current
I20
32
TPre —Pre-melting time
T20
1.0
TUp —Up-slope time
T21
0.1
TW —Initial electrode height or not
K55
Yes
TDn —Down-slope time
T25
4.2
IEd —Arc shut current
I25
13
F4 operation tips 13：10 A-hand
Rule of program name
Rule of program name: A total of 100 programs for 00-99, each program’s name is represented with a
character.
When you need a new program, this device provide two solution:
I Modify a existing program by the editing function
II Load new welding parameters by computer downloading (option)
3.2.1 Editing program number (if need to select No. 5 program , for example)
Press the button to select the user program number 05 you need to edit;
If you need to modify the edited name of the program, re-input it according to the above method.
F1 Modify the parameters
F2 Select simulate or weld mode
F3-F1 Selection of user program
F3-F2 Operation with memory card
F3-F4 Welding parameter

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3.2.2 Editing welding parameters
In the editing mode, after (editing) modification of program name, edit the parameters according to the
following
DIA—Diameter of tube
DIA
38︱
HCd —Welding Head code
RN
S112
IMd —Current mode
K21
Pulsed
RMd —Rotation mode
K31
Pulsed
WF —Wire feed or not
K41
No
WCd —Wire feeder code
SN
97
AVC —AVC control
K51
Yes
ACd —AVC Module code
HN
21
OSC —OSC or not
K61
Yes
OCd —OSC Module code
WN
21
SEC —The number of sector
B
2
RDg —Rotation degree
N20
360
GPre —Gas pre- shield time
T10
3
GLag —Gas lag-shield time
T11
3.2
IPre —Pre-melting current
I20
32
TPre —Pre-melting time
T20
1.0
TUp —Up-slope time
T21
0.1
TW —Initial electrode height or not
K55
Yes
TDn —Down-slope time
T25
4.2
IEd —Arc shut current
I25
13
1、Press key to move the cursor to the next parameter diameter DIA
2、Press to select the parameter of diameter of desired pipe to be welded;
3、Press to move the cursor to the next item header code RN;
4、Press to select header code item, and press to select the figure code;
5、Press to move to current-mode K2 1 pulsed;
6、Press to switch between pulsed / DC;
7、Press key to move the cursor to the traveling mode K31 constant speed;
8、Press to switch between pulsed / constant speed;
9、When the cursor is at the position of a parameter, press key to change the value of this
parameter, determine the parameter value you want. If the parameter value cannot be changed, it
indicates that the value of this parameter has reached the maximum or minimum.
10、In the case of sub-section, press F1 key to jump the page, take a direct jump to a page.
Attention!
※In the editing mode, press , scroll a line every time, for key, scroll a screen every time.
※In the editing of parameters, the cursor can not reach some parameters , this means it is mainly subject to
the priority of parameter setting, for example ,when current mode is DC, the traveling mode and wire

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feeding mode cannot be an option, the cursor directly skips to the next one!
※In the editing of parameters, usually the dark parameters cannot be changed.
※Parameters in the fourth page is parameters effect that sector been marked, set the parameter of each
section and its value separately, when the screen is at the end of certain paragraph, press key, then
the parameter of this paragraph is same as the previous one.
※Press button, and the picture will be presented on screen when set the parameters and values of all
pages
Press button, and the picture will be presented on screen
Press or as necessary to save or not save the set parameters and exit.
※Press twice consecutively to save the program, pressing twice consecutively will not save it, return
to idle mode
※Press key to see list of empty program in order to store the edited program
3.3 simulate or weld select F2
In order to determine whether the parameters of program is proper before welding and accuracy
of positioning, operator can run simulate process, when set the simulate mode, start welding, the
welder simulates actual state of welding process without ARC in order to make the appropriate
adjustments.
In idle mode, press , panel shows as below.
F1 To other sector
F2 Same as previous one
F3
F4 Exit
F2 Save
F3 Don’t Save

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Program number 00 Simulate
DIA—Diameter of tube
DIA
38︱
HCd —Welding Head code
RN
S112
IMd —Current mode
K21
Pulsed
RMd —Rotation mode
K31
Pulsed
WF —Wire feed or not
K41
No
WCd —Wire feeder code
SN
97
AVC —AVC control
K51
Yes
ACd —AVC Module code
HN
21
OSC —OSC or not
K61
Yes
OCd —OSC Module code
WN
21
SEC —The number of sector
B
2
RDg —Rotation degree
N20
360
GPre —Gas pre- shield time
T10
3
GLag —Gas lag-shield time
T11
3.2
IPre —Pre-melting current
I20
32
TPre —Pre-melting time
T20
1.0
TUp —Up-slope time
T21
0.1
TW —Initial electrode height or not
K55
Yes
TDn —Down-slope time
T25
4.2
IEd —Arc shut current
I25
13
F4 operation tips 13：10 A-hand
In simulate ,press again to present the weld state.
Program number 00 Weld
DIA—Diameter of tube
DIA
38︱
HCd —Welding Head code
RN
S112
IMd —Current mode
K21
Pulsed
RMd —Rotation mode
K31
Pulsed
WF —Wire feed or not
K41
No
WCd —Wire feeder code
SN
97
AVC —AVC control
K51
Yes
ACd —AVC Module code
HN
21
OSC —OSC or not
K61
Yes
OCd —OSC Module code
WN
21
SEC —The number of sector
B
2
RDg —Rotation degree
N20
360
GPre —Gas pre- shield time
T10
3
GLag —Gas lag-shield time
T11
3.2
IPre —Pre-melting current
I20
32
TPre —Pre-melting time
T20
1.0
TUp —Up-slope time
T21
0.1
TW —Initial electrode height or
not
K55
Yes
TDn —Down-slope time
T25
4.2
IEd —Arc shut current
I25
13
F4 operation tips 13：10 A-hand

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3.4 Selection of program
In idle mode, press key at same time to enter the following interface
Serial No. Program Name Diameter Occupied Main
Memory
0 PRG55 Φ52 0.4℅
1 PRG99 Φ10 0.4℅
50 Φ61 0.4℅
60 Φ52 0.4℅
Press to select the program, press to identify and exit, press to deselect. In addition, you
can use on the panel to increase and decrease the programs one by one and press for
identification. You can also use the on the remote control one by one to change program, and
press for identification.
Note: If cancel the option, the system will be defaulted to return to the largest program number 99.
3.5 The embedded memory operation
In idle mode, press into the embedded memory operation, the system enters the following
interface
F1 Delete
F2 USB flash drive
F3
F4 Exit
3.5.1 Press to delete the stored program, then the tips display on the screen as below
Then press key to select the program you want to delete, and then press to confirm. As
shown below
F1 delete all
F2 delete selected
F3 Exit

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Choose to delete all or part of programs as you need.
3.5.2 Press for the U disk operation, then the screen displays , wait a
moment, the system enter the following interface
Note: “+.”and “+ ..”mean that WEL0 is the subdirectory built by device in default under the root
directory.
According to the tips at the bottom of the screen: Press F1 to enter subdirectory of disk U. Press to
switch between the embedded memory and disk U.
indicates that build a new subdirectory under the directory of disk U.
Namely press to switch the cursor to the disk U directory, press , a + WEL1 subdirectory is added in
disk U. You can build multiple subdirectories successively.
option key, it is used to copy programs between the system embedded memory and the disk U.
To copy the system program to disk U, press to enter directory of disk U, select a subdirectory
you want store, such as WELO, press , enter WEL0 interface, as shown in figure
Program number 5
Effective embedded memory 96 ℅
Serial No. Program Name
UDiskU
50
60
+.
+..
+WEL0
F1 Content change F2 Selection F3 Subdirectory building F4 Exit
UDisk test
F1 Delete all
F2 Delete selected
F3 Exit

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Switch the cursor to the system program column, select the program number you want to copy, for example:
program 50 , press select, then the program number 50 becomes red, press to copy it to disk U. As
shown in figure
If you want to copy the program to the system from the disk U (for example, PRG55 in WEL1 subdirectory
copied to the system), firstly press to enter WEL1 directory of disk U, press to select PRG55, at
this time PRG55 turns red, press to copy it to the system memory. As shown in Figure
Press to exit Disk U operation .
Note: Program in Disk U can not be deleted in the machine.
Serial No. Program Name
Disk U
50
60
-.
-..
Serial No. Program Name
Disk U
50
60
-.
-..
-PRG50
Serial No. Program Name
Disk U
0 PRG55
50
60
-.
-..
-PRG55

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3.6 Welding parameters
In idle mode, press the key _ at same time, you can see the actual value of each parameter
after the end of the machine welding.
-----------------------------------------------------------------------------------------------------
Attention!
When input the reference program, the new program will cover the existing
program, we remind you of choosing the vacant or unfamiliar position to input the
program number in order to avoid loss of data!
-------------------------------------------------------------------------------------------------------

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IV Parameter Setting
4.1 Gas Flow control
You may set the time of pre-shield gas and lag-shield gas as required (as shown in Item 1 in the figure)
4.1.1 Pre-shield time T10.
Set parameters of shielding gas through the control panel, see 3.2.2 editing of parameter of 3.2 Set
parameters of shielding gas through the control panel.
4.1.2 Lag-shield time T11
Set parameters of shielding gas through the control panel, see 3.2.2 editing of parameter of 3.2 Set
parameters through the control panel.

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4．2 Current control
Current may adopts pulse / DC control mode, you can set the following parameters as required (as
shown in Item 2 in the figure), and you can set corresponding current parameters in each sector according to
demand (see 4.7 interval setting for mode of sector setting,).
Current mode K21 up-slope time T21
Pre-melting current I20 Pre-melting time T20
pulsed current I22 pulsed time T22
Base current 123 Base time T23
Arc shut current I25 down-slope time T25
Current increment DI Intersegment current K22
Set parameters of current through the control panel, see 3.2.2 editing of parameter of 3.2
Set parameters through the control panel.
Set parameter through control
panel
打开电源
Start welding
Press I+ and I- to select current
Remark: changing the current by remote control in welding process is under restrictions by
parameter setting, if the increments of 0 in parameter setting, then the current increment cannot be
changed, otherwise, every time press the button, the current increment isΔI.
In the sector, the current during sector exchange may choose linear decreasing, which is very
useful to weld the workpiece with small diameter.
Arc voltage tracking