Page 1
PortablePlasmaTorch
HeightController
Manual
（Type：F1620）
JiaXing Leader NC technology Co., LTD.
2014-12
Page 2
Portable Plasma Torch Height Controller Manual (F1620)
Portable Plasma Torch
Height Controller
Manual
(Type：F1620)
JiaXing Leader NC technology Co., LTD.
2014-12
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Portable Plasma Torch Height Controller Manual (F1620)
Version Date Page Description
V1.0 2012/10/10 All The new version created
V1.1 2014/09/12 iv MAX range: 21.6VDC-26.4VDC
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Portable Plasma Torch Height Controller Manual (F1620)
User Guide
Read this Manual
This manual is used to the Plasma Torch Height Controller (F1620) produced by
JiaXing Leader NC technology Co., Ltd.. Read and understand this munual, the
cutting machine manuals and local security regulation before use carefully.
Note: This product is not designed to be field serviceable. Please return back to the
after-sales (service) center for any required service.
Address: Room 711, NO.955, Rd. Jianchuan, Woxiangwojia mansion, MinHang,
Shanghai, China
Tel: 021-34290970
After-sales: 021-34121295 Fax: 021-34290970
E-mail: support@flcnc.com; sales@flcnc.com
Website: www.flcnc.com
Work condition
z Working Temperature, 0℃~50℃. Relative Humidity, 5~95%.
z Operation Voltage: 24VDC. MAX range: 21.6VDC-26.4VDC.
z The THC should be installed in a cab which can provide protection from powder.
z The THC should be better used in the situation without high electromagnetic
radiation.
Maintenance
z This controller should only be operated by trained service person.
Do not open the controller unless obtaining the authorization.
z
Do not let any acid or alkalescency substance to corrode the controller and the
z
divide board.
z Please turn off power supply if the controller does not need to work.
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Portable Plasma Torch Height Controller Manual (F1620)
Safety notice
z This THC will switch in high electromagnetic，it can hurt me if we get to touch
with high electromagnetic . Do not touch shield cable and wire when power
supply is turning on.
z Packing pieces must be installed in accordance with the provisions and
requirements of step.
z GND must follow THC instruction.
Installation note
z THC first check on electrical safety : Before THC first power,making all port of
wiring connected, then unplug motor cable, in other words, do not connect lifting
motor cable temporarily. Then powering on. (warning: Motor cable must be
unplug before powering on, otherwise, the reason why the lift motor has
been rising (declining) is that may be received collision signal , it can injury
lifting motor)
z Check whether the collision function is normal: After THC power on, check
whether the collision detection function is normal, by observing the collision
indicator light to determine whether the normal. Of the following circumstances:
1)If the collision indicator light is turning on, really need to check whether a
collision, for example, whether proximity switch is divorce, whether torch
retaining cap and steel is touching.
If we only use torch retaining cap to detect collisions, separated from the
protective cap and cutting steel. Because there is no contact with torch retaining
cap and steel, the meaning that the collision have not take place, the collision
indicator light should be take off.
If we only use proximity switch to detect collisions, parameter P13 should
be set to 1, the meaning that allow the use of proximity switch detects a collision
signal. Under normal circumstances, the collision indicator light is turning on
when proximity switch is divorce; the collision indicator light is breaking down
when proximity switch is not divorce. If we use in scene, the collision indicator
light is breaking down when proximity switch is divorce, or the collision
indicator light is turning on when proximity switch is not divorce, it explain that
the description of the received signal and the normal, L09 need to set the value of
the inverse. After parameter is set correctly, proximity switch can accurately
reflect the situation of collision.
If we use proximity switch and torch retaining cap to detect collisions at
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Portable Plasma Torch Height Controller Manual (F1620)
the same time, need to check respectively each set whether can accurately reflect
the situation of collision. If a certain way is failing, please use their method by
alone to troubleshoot and fix, until it can accurately reflect the situation of
collision.
2) If the collision indicator light is breaking off, please make some
collision conditions by man, check whether the collision indicator light can be
turned on. For example, when we use torch retaining cap to detect collisions, if
we make torch retaining cap and cutting steel short circuit by metal screwdriver,
the collision indicator light should be turned on. Or when we use proximity
switch, if we make torch connector crooked by hand, make proximity switch
take off, the THC collision indicator light should be turned on. If make visible
collision conditions by man and the collision indicator light cannot be turned on,
we need to check whether the parameters can be set orderly.
z Switching in lift motor safely: After the detection of THC collision have debug
and used normally, please remove all conditions which can made collision, at the
same time, THC collision indicator light should be broken off . Then turning off
power source of THC and connecting the lift motor cable.
z Check whether direction of lift move is true: After motor cable have been
linked, power-on ,when check whether the button named 【▲】 in THC faceplate
is pressed, observe whether the lift body is rising; when the button named【▼】is
pressed, observe whether the lift body is declining. If the button named【▲】is
pressed, the lift body is declining rather than rising, or if the button named【▼】is
pressed, the lift body is rising rather than declining, it means that direction of
motor rotation is not true. Please enabling the value of P12, or exchange two
cable of lifting motor. It is best that ensure the button【
▲】and【▼】in THC
faceplate is consistent with direction of the lift body move.
z Check arc start and used for IHS(initial height sensing): check whether start
arc by pushing button of【text arc start】and check whether accomplish the initial
positioning by pushing button of 【text used for IHS】.
z Putting in Arc voltage cable true: The wire of plasma arc voltage and cable of
checking collision must be access to the corresponding port true, otherwise, it can
lead to danger.
z Demand that torch retaining cap used for IHS wiring: After the cable of
plasma anode must be received a work piece, the action that detects the torch
retaining cap collision and the initial positioning can work.
z Using shielded cable wiring: In order to protect equipment work, please use
shielded cable in our equipment. You can connect shielding layer in Shielded
cable to THC side and use single point grounding.
z Voltage divide board and voltage divide ratio: The ratio in THC is 100:1. And
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Portable Plasma Torch Height Controller Manual (F1620)
effective measuring voltage in THC is 0~660V DC.
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Portable Plasma Torch Height Controller Manual (F1620)
Catalogue
User Guide .................................................................................................................................... iv
Read this Manual ..................................................................................................................... iv
Work condition ......................................................................................................................... iv
Maintenance ............................................................................................................................. iv
Safety notice .............................................................................................................................. v
Installation note ......................................................................................................................... v
Chapter 1 overview ........................................................................................................................ 1
1.1 equipment presentation ....................................................................................................... 1
1.2 Features of equipment ......................................................................................................... 1
1.3 Function of equipment ........................................................................................................ 2
1.4 Technique parameter ........................................................................................................... 5
1.5 THC Installation size ........................................................................................................... 5
Chapter 2 system operation ............................................................................................................ 7
2.1 Operation panel button of explaining .................................................................................. 7
2.2 operation panel of explaining .............................................................................................. 8
2.3 Menu operation explain ..................................................................................................... 10
2.4 Motor drive current ........................................................................................................... 17
2.5 Working process ................................................................................................................ 17
Chapter 3 Port connection ............................................................................................................ 19
3.1 The case view .................................................................................................................... 19
3.2 Chassis port ....................................................................................................................... 20
3.2.1 CNC port ................................................................................................................ 20
3.2.2 Power supply, motor and motor limit port ............................................................. 22
3.2.3Arc start port and proximity switch position port ................................................... 24
3.2.4 USB port ................................................................................................................ 27
3.3 voltage divide port............................................................................................................. 29
3.3.1 arc voltage port ....................................................................................................... 29
3.3.2 torch retaining cap detection circuit port ................................................................ 30
Chapter 4 common problems ....................................................................................................... 35
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Portable Plasma Torch Height Controller Manual (F1620)
Chapter 1 overview
1.1 equipment presentation
Portable Plasma Torch Height Controller type F1620 is a product which have
such advantage as operate simply, stabilize property, full function and high
performance ratio. It is made on basis of condition that used in plasma power source
scene, and it absorb a lot of advantage of THC all around the world. Our equipment
make use of peculiarity that plasma power source have constant current, check
alteration of plasma torch height by checking alteration of plasma torch height,
control height between torch and workpiece on time. It suit to control height of
plasma power source torch which have peculiarity of constant current, or control
height of plasma power source torch which have peculiarity of constant current within
limit. It especially suit to torch height control of portable cutting machine.
Our equipment have such advantage as operate simply, use easily, light and
portable, all buttons and knobs design by humanization, comfort and convenience.
Figure 1.1 the front panel in host(type F1620E)
1.2 Features of equipment
¾ Our equipment use nixie tube and LED as arc voltage and signal display, clear
display, stabilization and anti-interference, long serve life.
¾ The parameter is able to alter by button and rotary knob in our equipment, easy
to use.
¾ Our equipment use the installed way which have 60 degree of slope, it suit to
use portable cutting machine
¾ Our equipment have voltage divide and make all angle shield by metal, smaller
volume, better anti-interference.
¾ It have simple and convenient parameter which can be set, change operation
parameter flexibly, suit complex working conditions.
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Portable Plasma Torch Height Controller Manual (F1620)
¾ It can suit external working conditions by changing parameter, so we need not
change hardware within equipment.
¾ It can change the electrical level of input signal which is useful. The input
signal acquiesce in low electrical level is useful. The high electrical level is
useful when we change it.
¾ Input and output is insulated by optocoupler, it is useful to protect equipment
from damage when voltage is bigger and electromagnetism pulse is disturbed.
¾ The arc start relay and the arc start prosperity relay is omron power relay, so it
is reliable when it work.
¾ It can observe the electrical level in work process.
¾ The different work process is mutual seal, it can avoid operate fault.
¾ When THC have a delay of boring a hole, it can use function which it can
dynamic bore a hole after arc start is start.
¾ It can monitor whether arc start have been start in torch process, if it detect that
arc is breaking off, the THC can inform CNC in time and turn off the arc start
relay, it can avoid to cite arc for empty when arc is breaking off.
¾ When auto height control is proceeding, it can ensure that practical arc voltage
follow setting arc voltage is closely, it hardly have error.
¾ When auto height control is proceeding, it also can change the arc voltage
setting value, it is easy to change torch height slightly when torch is working.
¾ When auto height control is proceeding, collision signal can feedback for
numerical control system, it can avoid that numerical control system is
marching after collision.
¾ When auto height control is proceeding, it can use function which arc voltage
can be adjusted by machine auto control
¾ After torch have accomplished, THC can automatic promote torch height, and
height which we promote can setting casually.
1.3 Function of equipment
1） Auto initial height sensing(IHS)
The way of IHS have the detection way of proximity switch and the detection
way of torch retaining cap collision.
¾ Proximity switch location detection
Our equipment use NPN model proximity switch (or PNP model proximity
switch), proximity switch is contacting when it do not work. When down testing or
arc down initially, if torch collide workpiece(or if collide workpiece make torch tilt),
proximity switch will break away from, then detection voltage can check this signal, it
can promote the touch height which down initially(height can change by the panel
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Portable Plasma Torch Height Controller Manual (F1620)
spin button named “down height”). When proximity switch is breaking away from for
long time, torch can keep straight rise until it collide upper limit of motor.
Torch retaining cap collision detection
¾
When we test collision by torch retaining cap, if torch retaining cap connect
with work piece, detection voltage can be start and promote the touch height which
down initially(height can change by the panel spin button named “down height”).
After torch rise, torch retaining cap depart from work piece and collision signal reset
at once. If torch retaining cap signal is keeping for long time, torch can keep straight
rise until it collide upper limit of motor.
¾ Dual speed of IHS
After down initially, torch can descend 6 second at fastest speed (the time can
change by menu), then it descend at lowest speed (the lowest speed= the fastest/4)
until torch collide work piece. Two kinds of speed down can promote work
efficiency, descend in appropriate height, reduce collision impact, and extend serve
life of torch retaining cap.
2） Auto arc voltage height control
When it fit to start auto height control, if arc voltage do not exceed 30V which
we have been set up(parameter can change by menu), the THC will start auto height
control.
3） Auto torch promote after collision
When collision happen in a condition which torch and down is not working,
torch can automatic promote, the time named urgency collision rise spear time.
When down initially detection is working, or when collision happen within torching,
auto torch promote, the time named down height time.
4） Auto torch promote after torch is accomplished
After torch is accomplished，auto torch promote, height can change by setting
parameter.
5） Manual operation
Many functions can be manual operated on operation panel of THC, such as,
set auto/manual mode of THC, manually control torch up and down, IHS test arc start
test.......etc.
6） Auto operate
After numerical control system send arc start signal, THC can automatic
accomplish down initially—arc start—arc start feedback success, after CNC receive
signal which arc start feedback is successful, machine tool start to motion and incise.
7） The function of displaying and monitoring
THC display arc voltage value by using two nixie tube, the green nixie tube
above equipment is used for display arc voltage setting value, the red nixie tube
under equipment is used for display actual value of arc voltage. It is convenience for
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user to monitor arc voltage value in incising.
8） Menu Operation
When torch is not working, parameters can be changed by panel button. Users
can flexibly change speed, working way and so on.
9） Spin button operation
The panel has three spin buttons; it can change arc voltage, initial height and
delay time for piercing.
10） High and low level control
Input switch can choose using low level or high level, it can suit complicated
applied environment. The default level is low. Also it can be changed by menu.
11） The function of avoiding collision
When torch is working, if the lower arc voltage setting value(or nozzle loss)
lead to torch collide work piece, THC can send rise signal , it can avoid torch collide
work piece continually and damage work piece. When collision happen in a
condition which torch is working, if collide have happened several times, we can
make numerical control stop work. Before equipment leave factory, if collision is
happening, CNC will make torch stop work. If user do not make collision input
signal connect with CNC, so when collision happen a condition which torch is
working, CNC cannot receive the collision signal, it make torch continue to work.
Whatever numerical control system whether have stopped torch, when collision
happened, THC can promote torch height automatically until down height initially.
When torch is not working, if torch collide steel plate, torch will automatic
promote a height named urgency collision rise spear height(in general, this height is
higher than down height, and this parameter can be change).
12） Intelligent arc voltage adjust
When intelligent arc voltage adjust is been use and torch is working, if torch
collide continuously steel plate twice, arc voltage can increase automatically a value
which we have set (this parameter can be change, it is 5V that we set), for example,
if arc voltage setting value is 110V, after torch collide continuously steel plate twice,
arc voltage setting value increase automatically 5V, arc voltage setting value is 115V
now, it can promote torch height to avoid collide work piece when torch is working.
13） Dynamic pierce function
During torch is working, if set-pierce have delay, torch can promote a height
when arc start work at the moment. Before delay time of piercing have
accomplished, torch can descend a height which it is the same with promoting
height. It can be named dynamic pierce function similarly. When piercing is
working, torch need promote a height, it can avoid dress get into torch head. If
dynamic pierce lifting times that we set is 0, torch cannot promote when arc start is
working.
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14） Collision signal feedback
THC can make numerical control system receive collision feedback signal, it
can avoid that torch is working after collision have happened. THC make CNC
receive collision feedback signal after collision happened several times, it can keep
coherent torch.
1.4 Technique parameter
¾ Work voltage：Rated DC 24V （The scope is 21.6VDC-26.4VDC）。
¾ Lifting motor：DC 24V.
¾ Motor drive：PWM.
¾ Output current：0A-3A (the electric current that motor can input is 5A).
¾ Load capacity：100W.
¾ Working temperature：0 ~50 .℃℃
¾ IHS：proximity switch of IHS.
Torch retaining cap of IHS.
¾ Voltage divide ratio：100:1
¾ The precision of arc voltage sampling：0.2V
¾ The precision of arc voltage adjust：1V
¾ The speed of lifting：It determines by highest speed of lifting.
¾ Setting scope of arc voltage：30V~600V, it can change by panel spin button.
¾ The biggest torch following speed：It determines by highest speed of lifting.
¾ Overload protect：auto overload、overheating、lack of voltage protect，making
power source connect adversely to protect itself.
1.5 THC Installation size
¾ THC installation size：width 271mm，depth 190mm（it can not contain line and
port in back)，height 70mm
。
¾ THC installation screw of IHS：
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Chapter 2 system operation
2.1 Operation panel button of explaining
Figure 2.1 panel and button explain
【▲】： torch up button. Rising is earlier than declining.
【▼】：
【MENU】： it is also named as【MENU】. Menu function button of choosing, and
torch down button.
different condition have different function.
【OK】： it is also named as【OK】. After entering into menu, if this button have
been pressed at the first time, the parameters are able to be modified,
After modified, the parameter will be confirmed when the button is
pressed at the second time.
【＋】： when parameter is switching, the button can increase the parameter
number progressively. When parameter is amending, the button can increase the
parameter value.
【－】： when parameter is switching, the button can decrease the parameter
number progressively. When parameter is amending, the button can decrease the
parameter value.
【AUTO】： it is also named as【AUTO】, it is used for switching the condition which
allow auto height control. Whenever the button have pressed, the light
above the button can change condition. If the light is lighted, THC can
start auto height control during torch is working. If the light is gone out,
auto height control will stop work. The light is lighted when THC is
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start.
【ARCON TEST】： it is also named as 【ARCON TEST】. During torch do not work
and menu operation do not use, plasma can start arc(arc start relay is
closed) when button have been pressed, and it can stop start arc(arc relay
is opened) when button have been loosened. If arc start button of testing
is loosened, torch will lift up an height which named torch
accomplishment height of putting the spear.
【IHS TEST】：
it is also named as 【IHS TEST】. IHS button of testing. During torch do
not work and menu operation do not use, if the button is pressed first,
THC will start IHS until down is accomplished. If the button is pressed
again during down is working, or 【▲】 is pressed, down will stop work.
The light above the button is lighted during IHS test. If IHS test finish,
the light will go out.
2.2 operation panel of explaining
1.Displaying with Nixie tube ：Arc voltage value is displayed by two nixie tubes
in the front operation panel. During torch do not work and menu operation do not
been used, it can display arc voltage 、IHS 、pierce delay value and so on. The green
nixie tube is used to display arc voltage setting value; the red nixie tube is used for
display actual value of arc voltage. Arc voltage setting value can be changed by
turning the button named【ARC SET】(【ARC SET】)，and the value displayed with green
nixie tube will be changed at the same time. The red nixie tube display 0 when plasma
do not been working. The value displayed with red nixie tube is actual arc voltage
value during plasma is working.
2.Parameter spin button of setting：
There have three spin button of spin encoding in panel.
The spin button named“ARC SET”：When menu operation do not use, arc voltage
value can change by turning this spin button. If it turn clockwise, arc voltage value
will increase. If it turn anticlockwise, arc voltage value will decrease. Arc voltage
setting value is displayed in yellow nixe tube. When we change arc voltage setting
value, it should on the basis of workpiece thickness and torch speed, it also need use
parameter which offer by plasma power source. Torch height depend on Arc voltage
value when torch is working.
During torch is working, arc voltage setting value also can change by spin button,
and it can adjust torch height. This operation suit to adjust slightly torch height when
torch is working.
The spin button named“Piercing Delay” ：When menu operation do not use,
turning the button can change the value of piercing delay time. If it turn clockwise, the
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value of piercing delay time will increase. If it turn anticlockwise, the value of
piercing delay time will decrease. When the spin button is turned, the yellow nixie
tube display“Dly”, the red nixie tube display piercing delay time, the unit is second.
When THC use the piercing delay time which user set, it can send arc OK signal
to CNC after piercing delay is finishing and arc voltage by sampling is effective.
Some CNC have piercing delay time, but this delay is calculated when CNC receive
arc OK signal. The authentic piercing delay time is the sum of piercing delay time of
THC and piercing delay time of CNC. If user do not want to use the piercing delay
time of THC, user can set it as zero.
The spin button named“IHS Height”：
When menu operation do not use, turning
the button can change height of IHS. If it turn clockwise, the height of IHS will
increase. If it turn anticlockwise, the height of IHS will decrease. When the spin
button is turned, the green nixie tube display“IHS”, the red nixie tube display the
height of IHS. The height of IHS set by delay, the unit is second.
When menu operation do not use, two nixie tube is display arc voltage setting
value. If user turn the spin button named “Piercing Delay”or the spin button named
“IHS Height”, it will display corresponding character. If the spin button is not turned
for a long time, the nixie tube will display arc voltage setting value.
3. Working condition indicator：
The panel have 8 LED light：
¾ UP indicator：This LED light is turned on when torch lift up.
¾ AUTO THC indicator
：This LED light will be truned on when the THC is
working in auto height controlling processing. If it satisfy four conditions
below, the indicator will turn on：
1）The indicator named“AUTO”is turned on.
2）CNC Auto height control enables.
3）THC have sampled valid arc voltage.
4）The sampling arc voltage do not exceed the value added
between arc setting voltage and arc protecting voltage(in general, the value is 30V and
can been changed).
¾ TRANS indicator：The indicator is lighted, it means system have detected the
effective arc voltage value and piercing have competed. (it is piercing delay
time of THC over, it is not contain the piercing delay time of CNC)
¾ ARC ON indicator：Turn on when THC send arc start signal out. If IHS
completed, this indicator is lighted when THC send arc start signal. During
arc start test, the indicator is lighted.
DOWN indicator：Turn on when torch lift down.
¾
¾ COLLISION indicator：Turn on when torch touch workpiece or proximity
switch effective.
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¾ AUTO indicator：The indicator up the button named【AUTO】is indicated
whether allowed auto height control. If the indicator is lighted, THC will
allow auto height control. If the indicator is extinguish, THC will not allow
auto height control. The indicator is lighted after starting up. The indicator
condition will change when the button named【AUTO】is pressed.
¾ IHS TEST indicator：The indicator up the button named【IHS TEST】is lighted
during IHS test, it means IHS test is working. The indicator is extinguish
during other condition.
2.3 Menu operation explain
THC have concise menu, it can set some parameter and adopt to different work
condition. Menu operation use the button named【MENU】、【OK】、【+】、【-】and so on.
It also use two nixie tube to display parameter, the green nixie tube display parameter
number and the red nixie tube display parameter value.
When user use it on the scene, parameter number and meaning can refer to
concise parameter grid up the chassis.
During torch do not work, when arc start and IHS test do not work, user press the
button named【MENU】can enter into the menu operation model. After it enter into the
menu model, the button named【IHS TEST】、【ARCON TEST】
is trashy. Only the button
named【▲】、【▼】and the signal named THC_UP、THC_DN that CNC send is useful.
If THC enter into the menu model, it will not test and cut.
When THC enter into the menu model, it mean THC enter into first submenu
named “Pxx”（xx is parameter number），if the button named【MENU】is pressed again，
THC will enter into second submenu named“Hxx”. When the button named【MENU】
is pressed, THC can switch the next submenu. When it have switched the last
submenu, if the button named
【MENU】is pressed, it will exit the menu model. THC
can test and cut until it exit the menu model. So user need exit the menu model in time
after parameter have changed.
When THC switch submenu, the submenu is in a view model, it display first
parameter of submenu. For example, the first parameter of first submenu is named
“recover factory parameter”. The yellow LED display“P00”，the red LED display“ 1”.
When the submenu is in view model, pressing the button named【+】can switch the
next parameter in same submenu. For example, the yellow LED display“P01”, when
the button named
P02. When the button named
【+】is pressed, it can display“P02”. The red LED display value of
【+】is pressed again, it can display“P02”, by parity of
reasoning. Similarly, pressing the button named【-】can go back the last parameter
successively.
When the submenu is in view model, pressing the button named【OK】can enter
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into the parameter modification model. Then the red LED start flicker, it means this
parameter is waiting for changing. Pressing the button named【 +】 /【 -】can
increase/decrease parameter, the value which user change will display in the
parameter. After parameter have changed, user can save it by pressing the button
named【OK】and cancel it by pressing the button named【MENU】.
If user save it by pressing the 【OK】button, the red LED will stop flicker and
display the value which user have change. If the parameter have be changed and user
cancel it by pressing the 【MENU】 button, the red led will stop flicker and display the
value which the parameter is not changed。
THC have“Pxx”“Hxx”“Lxx” three submenu.With the addition of non-menu
model, it have four condition. When the button named【MENU】is pressed, THC can
switch in four condition circularly. Warning: During the non-menu model, if THC
is testing or auto height control is working, THC will not enter into the menu
model and change parameter. Similaryly, if THC have entered into menu model,
it will not start test and auto height control. After the parameter have changed,
user must be remember to exit menu model in time.
“Pxx”submenu contain 21 parameters, they are“P00”~“P20”and contain sundry
quantification parameter. The sundry parameter can change in this submenu.
“Hxx”submenu contain 9 parameters, they are“H01”~“H09”. It is used to check
input signal is high level or low level. The sundry parameter can not change in this
submenu. Warning : During torch start to work, pressing the button named
【MENU】can look up the level condition of input port.
“Lxx”submenu contain 9 parameters, they are“L01”~“L09”. It can be set the
input signal as high level effective or low level effective. The sundry parameter can
change in this submenu.
“Pxx”submenu listing
Para
meter
numb
er
Settin
g
scope
step
and
lengt
h
Initial
para
meter
Ye ll
ow
LED
Red
LED
Remark
adju
st
P00
P01
0-1 1 1 P00 1 Recovering factory parameter/
amending parameter interval
0-50 1 50 P01 50 Setting manual lift speed of torch, the
minimum speed is 0, the maximum
speed is 50. CNC_THC_UP also use
this speed.
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Portable Plasma Torch Height Controller Manual (F1620)
P02
P03
P04
P05
P06
0-50 1 50 P02 50 Setting manual descend speed of
torch , the minimum speed is 0, the
maximum speed is 50.
CNC_THC_DN also use this speed.
0-50 1 50 P03 50 Setting auto lift speed, minimum is
0,maximum is 50.
0-50 1 50 P04 50 Setting auto descend speed, minimum
is 0,maximum is 50.
10-50 1 30 P05 30 Unit:volt(V). The value of protecting
arc voltage. It can avoid torch descend
rapidly because of arc voltage increase
too big.
1-10 1 1 P06 1 Unit:volt(V). The arc voltage precision
of adjusting. For example, setting it as
1V, if D-value between setting arc
voltage and practical arc voltage is
under 1V, it will not start auto start.
P07
P08
P09
P10
P11
1-50 1 6 P07 6 Sensitivity coefficient, the bigger
coefficient can make the sensitivity
higher. But if it is too higher,torch will
quiver around the balance location.
0.1-9.
99
0.01 2 P08 2.0 Unit: second(S). During torch do not
work , the time is urgency rise spear
time when torch collide the steel.
3-20 1 5 P09 5 Unit: volt(V). The arc voltage value of
auto adjust. During torch work, if
torch collide the steel twice
continuously, the arc voltage value of
setting will increase this parameter
automatically.
0 或1 0 P10 0 Enabling arc voltage auto adjust.
When user set it as 1, it can allow arc
voltage to adjust automatically.
0-5 1 0 P11 0 During torch work, it allow that
collision can happen several time then
make THC stop to work. When user
setting it as 0, if the collision happen is
checked by THC, it can send a
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collision halt signal to CNC during
torch work.
P12
P13
P14
P15
P16
0 或 1 1 P12 1 Switching motor contrary or positive
direction of rotating. Instead of
changing wiring, changing this
parameter can change the motor
direction of rotating.
0 或 1 1 P13 1 Enable the proximity switch collision
check. When user set it as 1, the
proximity switch collision check is
allowed.
1-50 1 50 P14 50 Brake speed adjust step and length.
When set it as 50, brake speed is
fastest.
1-100 1 100 P15 100 Speed adjust step and length when
motor turn contrary. The bigger value
can make reversal transition speed
become more and more smaller.
0.1-2 0.01 0.2 P16 0.2 Unit：Second(S). Arc voltage delay
time of setting.
P17
0-10 0.1 1 P17 1.0 Unit：Second(S). The lifting time of
starting up.
P18
0.1-10 0.1 2 P18 2.0 Unit ： Second(S).The time of
promoting the spear after torch have
accomplished
P19
0-9.99 0.01 0 P19 0 Unit ： Second(S).Torch lifting time
when arc start start to work.
P20
0-20 0.1 6 P20 6.0 Unit ： Second(S). The time of
descending rapidly during the dual
speed IHS.
Parameter explain particularly:
1. P00：Recovering factory parameter. P00 can display 1. If user set it as 0 and
save this parameter, all kinds of parameter in our equipment will recover factory
parameter. After user exit the submenu, they can find that P00 display 1.
2. P01，P02，P03，P04：Setting manul lifting and auto lifting speed of torch. The
minimum speed is 0, the maximum speed is 50.
3. P05： The value of promoting arc voltage. During torch is cutting, if gun of
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Portable Plasma Torch Height Controller Manual (F1620)
torch go through the crack of torch, arc voltage can rise immediately. If way of
protecting arc voltage is not used, gun of touch will descend by fast speed. In
serious condition，gun of torch and workpiece can collide by faster speed. After
user set this parameter, when arc voltage exceed the value of setting, torch height
will not change. It is useful to protect torch. In genal ,we set it as 30V.
4. P06：The arc voltage precision of adjusting. For example, if user set the
parameter as 1V, it means when D-value between setting arc voltage and practical
arc voltage is under 1V, torch height will not be adjusted. If user set the parameter
as 3V means when D-value between setting arc voltage and practical arc voltage
is under 3V, torch height will not be adjusted.
5. P07：Sensitivity coefficient. When arc voltage is changing, more and more
bigger parameter can make torch adjust become more and more faster. But if
parameter is too big, torch is easy to quiver around the balance location. If
parameter is too small, torch can have slow follow speed. In genal, we set it as 6.
When user use it, it can be adjust on the basis of torch effect.
6. P08：The time of torch rise spear urgently. During torch do not work , when
torch collide the steel, THC can use fastest speed rise spear urgently in this time.
7. P09，P10：Setting the function of arc voltage auto adjust. During torch is
cutting, because of the arc voltage that user set is too low, or with service life of
plasma pierce is decreasing, arc voltage in plasma power source can rise. If arc
voltage value of setting is invariant, height will drop and it even can collide
pierce after auto height control. During torch is cutting, when collision have
happened, if user want to make torch promote some height and continue to cut,
this function will be used by user. According to this function, THC can increase
arc voltage value of setting automatically and increase torch height after collision
happen twice. It can avoid torch continue collide pierce. During torch is cutting,
when collision have happened, if user want to make torch promote some height
and continue to cut, this function will be forbidden by user.
8. P11：The time of allowing collision happen during torch work. During torch is
cutting, if user allow torch continue to cut after collision have happened, user can
set the time of allowing collision happen by changing this parameter. For example,
user set the parameter as1. Then during torch is cutting, when first collision
happen, THC can not send collision signal to CNC. But THC can make torch
promote a IHS height automatically. When collision happen again, THC can send
collision signal to CNC. After CNC receive this signal, torch stop to work. In
other example, user set the parameter as 3. After collision happen at the fourth
time, THC send collision signal to CNC and the input is TO CNC COLLISION.
9. P12：Switching motor contrary or plus direction of rotating. If user develope
direction of motor and the button of lifting/descending is different, they enable
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Portable Plasma Torch Height Controller Manual (F1620)
this parameter will change direction of motor. For example, when user set P12 as
1, if the button of lifting is pressed, motor will descend. When user set P12 as 0,
if the button of lifting is pressed, motor will lift.
10. P13：Enable the proximity switch collision test. When user set it as 1, THC can
use the proximity switch to test collision. When user set it as 0, THC can not use
the proximity switch to test collision. When user set it as 1, user need make
proximity switch put in THC and ensure that proximity switch is not breaking
away from. Otherwise, lifting motor can rise straight because of THC can not
receive the collision signal.
11. P14： Brake acceleration. This parameter can set deceleration time value when
motor stop to work. This parameter is bigger, deceleration can become faster, the
time of motor stop work can become shorter. The biggest parameter is 50.
12. P15：Reversion acceleration. Speed adjust step and length when motor turn
contrary. When motor speed is changing or motor turn positive become turn
contrary. It can change speed value by change this parameter, the bigger
parameter can make reversal transition speed become more and more smaller. We
set it as 100(it is the biggest value), user can adjust this parameter on the basis
of specific condition when they used THC.
13. P16：Arc voltage delay time of setting. After arc start command is sended and
delaying in this time have finished, THC start sampled the arc voltage value. This
time can be used for avoiding to sample severe and waved arc voltage when arc
start start to work.
14. P17：Torch lifting time after starting up. When THC is starting up, the time of
promoting the lifting motor. It can avoid some condition that the distance between
torch and workpiece is nearer. If user do not pay attention to make equipment
start to work and move the torch, it will lead to happen collision. Lifting torch can
avoid this accident happen after starting up.
15. P18：The time of promoting the spear after torch have accomplished. After
torch have accomplished, torch can lift a height. When arc start test, if user
loosened the button named【ARCON TEST】, torch can lift in this time.
16. P19：Torch lifting time when arc start start to work. When piercing delay time
is not setted as 0, THC can used this parameter and send a commend of arc start.
Arc start is working, at the same time, torch is lifting in this time. Before piercing
have accomplished, torch can descend a height which it is the same with
promoting height. It can named dynamic pierce function similarly. When piercing
is working, torch need promote a height, it can avoid dress get into torch head. If
dynamic pierce lifting times that we set is 0, torch can not promote when arc start
is working.
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17. P20：The time of descending rapidly during the dual speed IHS. During the
dual speed IHS, at first, motor descend by fastest speed in this time. Then motor
descend by lowest speed until collision have happened(lowest speed= fastest
speed /4). If user set it as 0, motor will descend by fastest speed/4.
“Hxx”submenu listing
High/low level of input display in red LED. If LED display 0, input is low level.
If LED display 1, input is high level.
Para
mete
r
Param
eter
scope
Ye ll
ow
LED
Red
LED
Remark
num
ber
H01 0 or 1 H01 0 The signal level condition of CNC_AUTO/
MANUAL
H02 0 or 1 H02 0 The signal level condition of CNC_THC_UP
H03 0 or 1 H03 0 The signal level condition of CNC_THC_DN
H04 0 or 1 H04 0 The signal level condition of CNC_IHSAON
H05 0 or 1 H05 0 The signal level condition of CNC_EXAON
H06 0 or 1 H06 0 The signal level condition of UP_LIMIT
H07 0 or 1 H07 0 The signal level condition of DN_LIMIT signal
H08 0 or 1 H08 0 The testing signal of Torch retaining cap collision
H09 0 or 1 H09 0 The testing signal of proximity switch
“Lxx”
submenu listing
High level effective or low level effective of input signal is displayed in red
LED. If user set it as 0, the effective level of input is low. If user set it as 0, the
effective level of input is high. When low level is effective and the actual level of
input signal is 0, it means this signal have happened. For example, when user
set“L05”as 0 and “H05”display 0, it means this signal is useful at now. It can explain
that the arc start signal which have IHS and send by CNC is useful. If “H05”display 1,
it mean CNC can not send arc start signal which have IHS.
Default of input is low level effective. User can change it on the basis of actual
condition.
Para
mete
Param
eter
Defa
ult
Ye ll
ow
Red
LED
Remark
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Portable Plasma Torch Height Controller Manual (F1620)
r
num
ber
scope of
para
mete
LED
r
L01 0 or 1 0 L01 0 The effective level of CNC_AUTO/
MANUAL.
L02 0 or 1 0 L02 0 The effective level of CNC_THC_UP.
L03 0 or 1 0 L03 0 The effective level of CNC_THC_DN.
L04 0 or 1 0 L04 0 The effective level of CNC_IHSAON.
L05 0 or 1 0 L05 0 The effective level of CNC_EXAON.
L06 0 or 1 1 L06 1 The effective level of UP_LIMIT.
L07 0 or 1 1 L07 1 The effective level of DN_LIMIT.
L08 0 or 1 0 L08 0 The effective level of testing torch retaining
cap collision signal.
L09 0 or 1 0 L09 0 The effective level of testing proximity switch
signal
Note：Default of motor limit L06、L07 is setted as 1, it means motor limit
switch should be set as shut form. User can change it on the basis of actual
condition. If lifting motor do not have limit switch, it do not connect line but they
need set L06、L07 as 0.
2.4 Motor drive current
This system adopts the integrated motor driver chip with protection function, it
have perfect over-current,over temperature protection.
The current peak of motor drive can be up to 5A.
2.5 Working process
The cutting process with the initial positioning
When art start signal which it connect by CNC is IHSAON, THC can start IHS at
first: torch can decline until collision have happened. Then torch can be promoted to
the original location level and THC can send a commend to make arc start work, it
make arc start relay close, plasma power source start arc start. After arc start is
working successfully and piercing delay time is over, THC send a successful signal of
arc start to CNC. CNC start cut, if THC is working in the automatic allow state and
CNC have sent auto control height signal, THC can work in the automatic control
height state. During torch work, if user pressed the button named【AUTO】, THC can
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Portable Plasma Torch Height Controller Manual (F1620)
quit allow condition automatically. Auto control height is stopped, and torch height
remain the same. If user pressed the button named【AUTO】 again, THC will recover
allow condition automatically. THC can continue control height automatically. After
torch have accomplished, CNC close IHSAON signal, THC can auto make torch
promote a height which we set.
The cutting process without the initial position
When art start signal which it connect by CNC is EXAON, THC can not start IHS
and send a commend to make arc start work straight. It make arc start relay close,
plasma power source start arc star. After arc start is working successfully, and piercing
delay time is over, THC send a successful signal of arc start to CNC. CNC start cut, if
THC is working in the automatic allow state and CNC have sent auto control height
signal, THC can work in the automatic control height state. During torch work, if user
pressed the button named【AUTO】, THC can quit allow condition automatically. Auto
control height is stopped, and torch height remain the same. If user pressed the button
named【AUTO】 again, THC will recover allow condition automatically. THC can
continue control height automatically. After torch have accomplished, CNC close
IHSAON signal, THC can auto make torch promote a height which we set.
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Chapter 3 Port connection
THC have voltage divide pierce in their interior, with CNC、dc motor、arc start
switch、proximity switch, etc. Points linking piece put in the case, and the whole point
of metal shielding encapsulation, voltage divide piece can be connected directly to the
plasma power source arc pressure and protective cap collision detection circuit, etc.
3.1 The case view
Figure 3.1 The positive view of mainframe
Figure 3.2 The rear view of mainframe
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3.2 Chassis port
3.2.1 CNC port
THC connect with the CNC by a socket which have 10 pin，the diagram below
pin definition：
Figure 3.3 The port of connecting with CNC
Warning：
1） The signal which connected with CNC is insulated by optocoupler , and the
effective level is low (user can change it to make high level effective)
2）TRANSFER_1、TRANSFER_2 are a disconnected contactor of relay. After
piercing have accomplished, if CNC detect arc voltage effectively, the contactor will
be close. When arc start is not effective, the contactor keep disconnected state.
The socket which have 10 pin description：
Pin
signal content
numbers
1.1 AUTO Enabling height control automatic：in genal, the
effective level is low level. It connect the signal of
closing height control, the corner signal, angle of
low speed signal and so on.
1.2 UP
The signal of controlling torch lift: in genal, the
effective level is low level. CNC control THC by
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Portable Plasma Torch Height Controller Manual (F1620)
this port, and control torch lift.
1.3 DOWN
The signal of controlling torch decline: in genal,
the effective level is low level. CNC control THC by
this port, and control torch lift.
1.4 IHSARCON
The IHSARCON signal: in genal, the effective
level is low level. When CNC make torch work, it
can output low level to this port, THC can start IHS
and make arc start work.
1.5 DIRARCON
The DIRARCON signal: in genal, the effective
level is low level.
1.6 TRANSFER1
1.7 TRANSFER2
The output piercing signal of finished: after arc
start have worked and piercing delay time is over, if
CNC detect arc voltage effectively, it will make
TRANSFER1 and TRANSFER2 close. The
contactor is a disconnected contactor of relay. The
port is a feedback signal which arc start have
worked successfully.
1.8 COM Pin named 1.1、1.2、1.3、1.4、1.5、1.9 use this port
as control signal com, it connect with signal of
CNC.
1.9 COLLISION
Input collision signal: opened and leaky output, it
need connect the load exteriorly. If THC detect
signal which collision have happened, this pin will
output level signal. After CNC have receive
collision signal, torch can be stopped to work.
When it connect with fangling CNC(F2000), the connection diagram as follows
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F2000 series CNC
THC（F1620 type）
TO CNC
AUTO
1.1
UP
1.2
DOWN
1.3
IHS_ARCON
1.4
DIR_ARCON
1.5
TRANSFER1
1.6
TRANSFER2
1.7
COM
1.8
COLLISION
1.9
PE
1.10
output
ports
input
ports
1
14
2
15
3
16
4
17
5
18
6
25
13
connected
inside in
CNC
1
14
2
16
4
18
6
25
13
Figure 3.4 the connection diagram of connecting with fangling CNC
3.2.2 Power supply, motor and motor limit port
THC use dc 24V to provide voltage, the biggest power supply scope is 22V-34V, the power
of dc 24V is depended on the motor power, the power of dc supply should be greater value-added
between motor power and 5W.
Power supply port, motor and motor limit port use the same set of plug. The plug wiring
defined as follows:
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Figure 3.5 Power supply, motor and motor limit port
In genal, motor limit switch keep close. The limit switch is keep close in THC.
Therefore, the parameter L06, L07 should be set as 1. If user make switch keep open,
the parameter L06, L07 should be set as 0.
The socket which have 7 pin description:
Pin
Signal Content
number
2.1 UP_LIMIT UP_LIMIT input of dc motor. When contactor keep
close and limit switch do not work, pin2.1 and
pin2.3 is connected. When motor have collided limit
switch, limit switch start work, pin2.1and pin2.3 is
disconnected.
2.2 DOWN_LIMIT DOWN_LIMIT input of dc motor. When contactor
keep close and limit switch do not work, pin2.1 and
pin2.3 is connected. When motor have collided limit
switch, limit switch start work, pin3 and pin5 is
disconnected.
2.3 LIMIT COM Pin2.3，limit COM
2.4，2.5 MOTOR PORT
（MOTOR1，
MOTOR2）
DC motor driver output, it connect positive and
negative electrode of 24V dc motor, the biggest
motor power is 100W. If user want to change DC
motor direction of rotation, it will be came true by
exchange wiring between MOTOR1 and MOTOR2.
It also will be came true by enabling parameter P12.
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2.6 POWER
The positive input dc 24V
SOURCE PORT
（24V+）
2.7 POWER
The negative input dc 24V
SOURCE PORT
（24V-）
3.2.3Arc start port and proximity switch position port
THC connect arc start switch and proximity switch by a socket which have 5 pin.
Pins are defined as follows:
Figure 3.6 arc start relay and proximity switch port
The socket which have 5 pin description:
Pin
Signal Content
number
3.1 +24V The power source anole of proximity switch
3.2 SIGNAL The signal input terminal of proximity switch
3.3 COM The power source cathode of proximity switch
3.4，3.5 Arc start port
（ARCSTART_1
，
This is normally open contactor of relay. When CNC
send arc start commend, the contactor can close and
plasma power source start make arc start work.
ARCSTART_2）
Arc start port use normally open contacts of relay：during arc start and torch are
working, relay contactor can keep close. It can keep open in other condition. The
relay contactor capacity is 10A/250VAC, if work voltage and work current of arc start
control circuit are exceeded this rated value, please use relay to augment capacity.
Otherwise, system will not work steadily.
In side THC, A 200mA recoverable fuse is installed at the power supply of
proximity switch, to avoid damage of power when proximity switch failed.
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The proximity switch of THC is NPN(or PNP) type open-drain proximity switch.
User can set it by the switch on voltage divide board. If the 2-bits switch is “ON”,
user should use NPN proximity switch. If the 2-bits switch is “OFF”, user should use
PNP proximity switch. The default set of the 2-bits switch is “ON”.
NOTICE: in the new version of hardware, the 2-bits switch is canceled. User
can use NPN or PNP type open-drain proximity switches directly only by changing
the “L09” parameter if needed.
Figure 3.7 The proximity switch view upon voltage divide board
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Portable Plasma Torch Height Controller Manual (F1620)
Figure 3.8 The proximity switch view upon voltage divide board
If user wants to use two NPN proximity switch, they should connect it as above
drawing. Two proximity switch connection method is shown as follows. By this
connection, any one of them is effective, THC can receive this signal.
Figure 3.9 Two proximity switch connection method
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Portable Plasma Torch Height Controller Manual (F1620)
Figure 3.10 Three proximity switch connection method
Warning：
1）It is better for user to connect NPN proximity switch as above drawing. By this
method, any one of them effective, THC can receive this signal.
2）When user use a NPN normally open proximity switch(or some NPN normally
open proximity switch ), L09 should be set as 0.
3）When proximity switch is breaking away from, the red indictor light of proximity
switch can be . At the same time, the collision indictor in THC panel can be
lighted.
4）In genal, if collision and torch incline do not happen, the red indictor light of
proximity switch will be lighted straight.
3.2.4 USB port
THC have a function which can make firmware procedure upgrade. User can use
USB flash disk, make it connect this USB port, then it can make firmware procedure
upgrade.
The upgrade method：
1）Copying the firmware program named “pthc.bin” or “f1620.bin” to the root
directory of USB flash disk.
2）Power off THC, and then insert this USB flash disk.
3）Power on THC. After THC power on, the green nixie tube may display
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Portable Plasma Torch Height Controller Manual (F1620)
“PHC”, the red nixie tube have 3 seconds countdown. Before the end of the
countdown, pressing the button named【MENU】can enter into the upgrade
mode. At the same time, the green nixie tube can display “UPD” and start
flashing, it means THC wait for confirmation to upgrade. If user do not press
the button named【MENU】before the end of the countdown, THC will start
work normally after the end of the countdown. If user do not press the
button named【MENU】before the end of the countdown, and user presses the
button named【+】, THC will skip the countdown and enter into the normal
working condition.
4）When the button named【MENU】is pressed, after entering into upgrade model,
the green nixie tube display “UPD” and start flashing, it means THC wait for
confirmation to upgrade. Then if the button named【OK】is pressed, THC start
update. At the same time, the green nixie tube display “UPD” but it do not
start flashing, the red nixie tube display upgrade progress by digital form.
When it display 8, it means program has been updated by 8%. When it display
16, it means program has been updated by 16%.
5）After pressing the button named【MENU】and THC have entered into upgrade
model, If user do not press the button named【MENU】and user presses the
button named【+】, THC will skip the upgrade condition of waiting and enter
into the normal working condition. If waiting for upgrade and do not press
any key, after 20 seconds, THC will end the upgrade condition of waiting and
enter into the normal working condition.
6）When the red nixie tube displays 100, it means program has been updated by
100% and upgrade is successful. After upgrade is successful, the nixie tube
display “SUC” and start flashing three times, then automatic restart THC.
7）After upgrade has been successful, it do not need to do any action.THC can
restart automatically, then after 3 seconds countdown, THC enter into normal
working condition.
8）After THC restart and enter into normal working condition, user can pull up
USB flash disk.
9）After THC firmware program upgrade is accomplished, the parameter of the
original set will not change and can use normally.
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3.3 voltage divide port
3.3.1 arc voltage port
Portable THC (TYPE F1620) use voltage divide board to detect plasma arc
voltage and torch remaining cap collision signal. The connection as follows:
Figure 3.11 voltage divide board port and wiring
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Portable Plasma Torch Height Controller Manual (F1620)
When THC detect plasma arc voltage, it detect plasma by voltage divide circuit.
After arc voltage(which plasma output )/100, import it into THC mainframe. As
shown above:
ELECTRODE port（the screen printing word named ELECTRODE in PCB）
connect with plasma arc voltage cathode.
WORK port（the screen printing word named WORK in PCB）connect with
plasma arc voltage anode.
SHIELD port（the screen printing word named SHIELD in PCB）connect with
torch retaining cap collision detection wiring.
The plasma power source anode is connected with GND, cathode is connected
with torch nozzle, and the voltage of nozzle is negative voltage. During torch work,
the absolute value of the arc voltage is greater than 100V. Because voltage is higher
and interference is bigger, it is necessary to control by quarantining voltage divide.
THC voltage divide board use voltage divide circuit which ratio is 100:1, the arc
voltage range which we can measure is 0V~660V.
Warning：the plasma power arc voltage sampling cable need use HVSC,
plus-n-minus should not be connected contrary. If arc voltage plus-n-minus is
connected contrary, auto height control will not work. Plasma power source arc
voltage wiring need connect with wiring pile in plasma power source output, it do
not connect with torch and work piece, it can avoid disturbing by the high
frequency.
3.3.2 torch retaining cap detection circuit port
THC can have two way of IHS :
一、 Torch retaining cap IHS;
二、 Proximity switch IHS.
For torch retaining cap IHS, the torch retaining cap need connected to SHIELD
port by high voltage cable. The connection as follows:
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Portable Plasma Torch Height Controller Manual (F1620)
figure 3.12 voltage divide board wiring diagram
Work process：THC receives arc start signal from CNC, lifts torch down right
away until torch retaining cap collide the workpiece. When retaining cap touches
workpiece, collision detection circuit can be connected. THC can receive this collision
signal right away and lift torch up to the set height. Then THC control plasma power
source start to work.
During torch retaining cap is detecting collision, user need notice some matter:
Cable connect to retaining cap via “SHILED” position, at the same time, in
1）
high voltage wires, user can twine a magnetic ring near the pressure plate, and user
can make cable twine some rounds in magnetic ring. It can avoid high-frequency
interference which plasma arc voltage produced usefully.
2） When Cutting material and workpiece connect with plasma power source
anode, they are short circuit, and ensure the circuit is low impedance. Wiring usually
can accomplish it. it do not need treat specially, because it have guaranteed the short
circuit when plasma power source anode and workpiece have connected.
3） GND named PE must be connected well, GND size＞4mm².
4） When torch retaining cap contact with workpiece, tangent resistance <20kΩ.
Otherwise, torch retaining cap collision detection circuit can not work because of
impedance is too large. It is especially important for rusty steel note, if the steel rust is
serious, user should clean the steel surface before torch start work, remove rust layer.
5） Torch retaining cap collision detection circuit just need a signal line of
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collision detection, circuits use wiring which arc voltage sample, so it can save a high
voltage cable.
Warning：Torch retaining cap collision detection circuit and the proximity
switch detection circuit can work at the same time, one of them can complete
positioning when they have detect collision signal. In genal, torch retaining cap
IHS signal can be triggered at first and accomplish fixed position. But when
workpiece have rusted oxide or have the protective insulation, torch retaining
IHS is invalid. If torch retaining cap IHS can not complete, THC will use
proximity switch to complete positioning.
If the wiring of torch retaining cap IHS is connected true, torch retaining cap IHS
will work usefully. And user can choose whether use proximity switch on the basis of
parameter. When user set parameter P13 as 1, they should use proximity switch to
detect collision. When user set P13 as 0, they should not use proximity switch to
detect collision.
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3.4 The total wiring diagram
PE
SHIELD
WORK
ELECTRODE
ARC voltage divider
TO
PE
protecting shield to check collision
ARC+
ARC-
Electorde-
Work
START1
PLASMA
ARCSTART_2
ARCSTART_1
+24V
SIGNAL
COM
24V-
24V+
MOTOR2
MOTOR1
TORCH
COM
DOWN_LIMIT
UP_LIMIT
Brown：V+
Black：signal
Blue
：V-
24V DC power supply
START2
proximity
switch
lift motor
（24V DC）
torch
protecting
shield
work piece
F1620 type portable plasma torch height controller
POWER
SWITCH
TO CNC
USB
PE
COLLSION
COM
TRANSFER_2
TRANSFER_1
DIR_ARCON
IHS_ARCON
DOWN
UP
AUTO
CNC
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Portable Plasma Torch Height Controller Manual (F1620)
Chapter4commonproblems
During THC work, user can encounter some problem and solution as follows:
num
ber
1 Nixie tube do not
2 Motor do not turn Blocking signal
3 After motor turn, it
4 After THC power
Fault phenomenon Reason Solution
Power source
display
do not work
on, the motor has
been rising
module have
problem
make it lock
Motor chip is
protected by
over-current action
Collision signal
can make motor
rise all the time
Check whether the power source connection is
steady.
1. Check whether UP_LIMIT/DOWN_LIMIT
signal make it lock
2. Over-current protection make motor driver
chip lock.
1. Check whether mechanical structure is stuck
1. Check whether proximity switch wiring is
connected well, check whether parameter P13、
L09 or L08 is set well. If wiring is connected
true and parameter is set true, the red indictor is
lighted when proximity switch close
5 Arc voltage control
is unstable
6 Before IHS have
accomplished,
plasma can make arc
start work right
away
2. Check whether proximity switch is damaged
3. Check whether torch retaining cap
positioning wiring is connected well. In genal,
there do not have collision signal when torch
retaining cap do not contact with steel.
1. Check whether the grounding is true.
2. Check whether plasma power source
cooling water is oozed.
3. Sensitivity coefficient P07 setting is too
large
It always happen
in the case of arc
start signal control
Extend CNC positioning waiting time
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Portable Plasma Torch Height Controller Manual (F1620)
7 After IHS have
accomplished, auto
arc start is closed.
8 Torch can not start
arc start
Plasma power
source can not start
arc start, or arc
start relay is not
closed
1. Coming back THC arc start relay wiring,
make two wiring which control plasma power
source start arc start connect, observe whether
plasma can make arc start work normally.
2. If plasma can make arc start work normally,
user should check whether THC arc start relay
can be closed normally(when the button named
【ARCON TEST】is pressed, arc start relay
should be closed).
1. Confirming the plasma power source is
working
2. Check whether IHS height is too high(or
low)
3. Check torch part which it is easy to damage.
4. When torch retaining cap is sensing,
electrode and the nozzle have scum which made
by cutting, it can make short circuit happen.
9 When CNC make
torch start work,
torch decline
immediately.
10 After arc have
shifted and piercing
have accomplished,
plasma make arc
start stop to work.
11 When auto IHS
work, torch is not
uplifted after it
collide steel plate.
When CNC make
torch start work
and arc voltage is
too high, if auto
height control start
work, torch will
decline
1. Increasing arc voltage setting value.
2. Extending the time which CNC start auto
height control need spend.
3. Check whether the corner low speed signal
of CNC or auto signal is normal, in genal, auto
height control signal is not joined before torch
cut a few millimeters.
immediately.
1. Delay time is too long.(before torch
machine move, torch stay time is too long in
piercing position, plasma is easy to make arc
start stop to work)
THC do not
receive collision
signal or IHS
height is too small.
1. Check whether collision signal can work
normally(check whether proximity switch or
torch retaining cap can reflect the collision
situation normally). If it can not reflect the
collision situation normally, IHS will not be
accomplished.
2. Check whether positioning height time
setting is too small, if this setting value is too
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Portable Plasma Torch Height Controller Manual (F1620)
small, gun will not be uplifted.
12 Torch is easy to
collide steel plate
during torch work
13 During auto height
control work, torch
is easy to vibrate
14 When touch work in
the relatively steep
slope, arc voltage
follow speed is too
small
15 Arc breaking is
happened during
torch work, CNC do
not make torch stop
work right away
Arc voltage setting
is too small
The THC
sensitivity is too
high
The THC
sensitivity is too
small, or lifting
motor speed is too
small
After plasm arc
breaking have
happened, arc
voltage do not
decline right away.
After THC receive
Increasing the arc voltage setting point
Reducing the sensitivity coefficient P07 slightly
1. Increasing sensitivity coefficient P07
slightly
2. Changing lifting motor which have faster
speed
CNC can receive arc feedback signal which
make by plasma
16 The green nixie tube
display LIC after
starting up
17 When program is
upgrading, after
pressing the enter
key, the machine do
not work and do not
accomplish the
upgrade.
this signal, it think
arc start is working
normally, and do
not send arc
breaking signal
Data storage go
wrong
USB read-write
speed does not
match
User should post it back our factory, we can
repair it.
1. Please upgrade again after powering off .
2. Please upgrade again after replacing the
USB flash disk.
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