Telwin SUPERPLASMA 83 HF Mode D'emploi page 4

1- EUROPEAN standard of reference, for safety and construction of arc
welding and plasma cutting machines.
2- Symbol referring to the internal structure of the machine.
3- Symbol referring to plasma cutting procedure.
4- S symbol: indicates that cutting operations may be carried out in
environments with heightened risk of electric shock (e.g. close to
large metal masses).
5- Symbol indicating the main power supply:
1~: single phase alternating voltage
3~: 3-phase alternating voltage
6- Casing protection rating.
7- Technical specifications for main power supply:
-U :Alternating voltage and frequency of power supply to the
1
machine (allowed limits ±10%):
- I :Maximum current absorbed by the line.
1 max
- I : Effective current supplied
1eff
8- Performance of cutting circuit:
- U : maximum no-load voltage (open cutting circuit).
0
-I /U :Current and corresponding normalized voltage that the
2 2
machine is able to supply during cutting.
- X :Duty cycle: indicates the time for which the machine is
able to supply the corresponding current (same column). It
is expressed in %, based on a 10 min. cycle (e.g. 60% = 6
minutes work, 4 minutes pause; and so on).
If the usage factors (on the plate, referring to a 40°C
environment) are exceeded the thermal cutout will trigger
(the machine will remain in standby until its temperature
returns within the allowed limits).
-A/V-A/V: indicates the range over which the cutting current may be
adjusted (minimum - maximum) at the corresponding arc
voltage.
9- Machine serial number (indispensable identification when asking for
technical assistance, ordering spare parts or discovering the origin of
the product).
10- : Size of delayed action fuses to be provided to protect the
power line.
11- Symbols referring to safety standards, the meaning of which is
explained in chapter 1 "General safety instructions for plasma arc
cutting".
Note: The data plate shown here is an example for explaining the
meaning of the symbols and figures; the exact values of the technical
specifications for your plasma cutting system must be read directly on the
rating plate of the machine itself.
OTHER TECHNICAL INFORMATION:
- POWER SOURCE: see table 1 (TAB.1)
- TORCH: see table 2 (TAB.2)
The weight of the machine is given in table 1 (TAB. 1).
4. DESCRIPTION OF THE PLASMA CUTTING SYSTEM
Control devices, adjustment and connection
Versions with contact strike (I max £
1 - Voltage change and stop switch
- In the 400V (230V) position the machine is ready for operation, the
indicator light is on (3).The control and service circuits are powered,
but the torch is not (STANDBY).
- In the O (OFF) position all operation is disabled; the control devices
are disabled, the indicator light is off.
2 - Adjusting the cutting current
- Used for setting the intensity of the cutting current supplied by the
machine, to be set according to the type of application (thickness of
material/cutting rate).
3 - Indicator light
- When this is on it means the machine is ready for operation.
4 - White indicator light: TORCH POWERED
- When it is on it means the cutting circuit is activated: Pilot Arc or
Cutting Arc "ON".
- It is normally off (cutting circuit disabled) when the torch button is
NOT pressed (standby status).
- It will be off, with the torch button pressed, under the following
conditions:
- During the PRE-AIR (1s) and POST-AIR (>30s) stages.
- If the pilot arc is not transferred to the piece within a maximum of 2
seconds.
- If the cutting arc is interrupted because the torch is too far from the
piece, if the electrode is worn out or if the torch is deliberately taken
away from the piece.
- If one of the SAFETY systems has been triggered.
5 - Yellow indicator light: THERMAL RELAY
- When this is on it means the power source is overheated; during this
phase machine operation is disabled.
- Reset is automatic (the light goes off) when the temperature falls
below the allowed limit.
6 - Compressed air pressure regulator
7 - Pressure gauge
- Use the knob (pull to release and then turn it) to adjust the pressure,
read the value (bar) on the pressure gauge and then press the knob
to lock the setting when the desired value is reached.
8 - Torch with direct connection
- The torch button is the only control device that can be used to start
and stop cutting operations.
- When the button is released the cycle will cease instantaneously,
whatever stage it is at, and only the cooling air (post-air) will be kept
on.
Fig. A
50A) (FIG. B)
2
- Accidental operations: the cycle will only be allowed to start if the
button is pressed for at least a preset minimum interval of time.
- Electrical safety: button operation is disabled if the insulating
nozzle-holder is NOT fitted to the head of the torch, or if it is not fitted
correctly.
9 - Return cable
10 - Power supply cable
Versions with HF (high frequency) strike (I max ³
POWER SOURCE (FIG.C)
1 - Torch with direct or control panel connection
- The torch button is the only control device that can be used to start
and stop cutting operations.
- When the button is released the cycle will cease instantaneously,
whatever stage it is at, and only the cooling air (post-air) will be kept
on.
- Accidental operations: the cycle will only be allowed to start if the
button is pressed for a preset minimum interval of time.
- Electrical safety: button operation is disabled if the insulating
nozzle-holder is NOT fitted to the head of the torch, or if it is not fitted
correctly.
2 - Return cable
3 - Control panel
4 - Power supply cable
5 - Compressed air pressure reduction valve
CONTROL PANEL (FIG. D-1)
1 - Switch
- In the I (ON) position the machine is ready for operation, the
indicator light is on.
- The control and service circuits are powered, but the torch is not
(STANDBY).
- In the O (OFF) position all operation is disabled; the control devices
are disabled, the indicator light is off.
2 - Adjusting the cutting current
- Used for setting the intensity of the cutting current supplied by the
machine, to be set according to the type of application (thickness of
material/cutting rate).
3 - White indicator light: TORCH POWERED
- When it is on it means the cutting circuit is activated: Pilot Arc or
Cutting Arc "ON".
- It is normally off (cutting circuit disabled) when the torch button is
NOT being pressed (standby status).
- It will be off, with the torch button pressed, under the following
conditions:
- During the PRE-AIR (1s) and POST-AIR (>30s) stages.
- If the pilot arc is not transferred to the piece within a maximum of 2
seconds.
- If the cutting arc is interrupted because the torch is too far from the
piece, if the electrode is worn out or if the torch is deliberately taken
away from the piece.
- If one of the SAFETY systems has been triggered.
4 - Yellow indicator light: THERMAL RELAY
- When this is on it means the power source is overheated; during this
phase machine operation is disabled.
- Reset is automatic (the light goes off) when the temperature falls
below the allowed limit.
5 - Yellow indicator light: AIR PRESSURE SAFEGUARD
- When this is on it means the air pressure is too low for the torch to
work properly; during this phase machine operation is disabled.
- Reset is automatic (the light goes off) when the pressure reaches
the allowed limit.
6 - Red indicator light FAULTY TORCH
- When this is on it means there is a fault in the torch, usually shorting
between electrode and nozzle; during this phase machine operation
is disabled.
- Reset is not automatic. To restore operation (RESET) it is
NECESSARY to follow the procedure below:
- Turn the switch to O.
- Remove the cause of the fault, see the section on "TORCH
MAINTENANCE".
- Turn the switch to "I" again.
7 - Compressed air pressure regulator
8 - Pressure gauge
- Use the knob (pull to release and then turn it) to adjust the pressure,
read the value (bar) on the pressure gauge and then press the knob
to lock the setting when the desired value is reached.
CONTROL PANEL (FIG. D-2)
1 - Main switch O - I
- In the I (ON) position the machine is ready for operation; the green
LED, indicating the presence of power, is on (Fig. D-2 (2)). The
control and service circuits are powered, but the torch is not
(STANDBY).
- In the O (OFF) position all operation is disabled; the control devices
are disabled, the indicator lights are off.
3 - Cutting current potentiometer
- Used for setting the intensity of the cutting current supplied by the
machine, to be set according to the type of application (thickness of
material/cutting rate). See the TECHNICAL SPECIFICATIONS for
the correct work-pause duty cycle to be adopted for the selected
current (period = 10 min.).
- Tab. 3 shows the cutting rate according to the thickness of
aluminium, iron and steel at a current of 150A.
4 - Air button
- When this button is pressed, air output will continue from the torch
- 4 -
70A)
2