Improper Use - Telwin TECHNOLOGY PLASMA 60 XT Betriebsanleitung

over.
- IMPROPER USE: it is dangerous to use the plasma cutting system
for any work other than that for which has been designed.
- Never lift the plasma cutting system without first disconnecting
and removing all interconnection and power supply cables and
piping.
- Do not use the handle to hang the plasma cutting system.
2. INTRODUCTION AND GENERAL DESCRIPTION
Plasma cutting system with compressed air mono-phase, with fan. Used
for fast cutting without deformation on steel, stainless steel, galvanized
steel, aluminium, copper, brass etc.
The cutting cycle is started by a pilot arc, which is established between
the mobile electrode and the nozzle/hood of the torch by the short circuit
current between these two elements: this technology also enables, other
than continuous cutting, cutting of grids and/or perforated sheet metal.
Furthermore, adjustment of the current from the minimum to maximum
allows you to ensure a high quality cut as the thickness and type of metal
varies.
MAIN CHARACTERISTICS
- Torch voltage control device.
- Air pressure, torch short-circuit control device.
- Thermostatic safeguard.
- No air protection (where applicable).
- Overvoltage, undervoltage.
- Air pressure display (where applicable).
- Torch cooling command (where applicable).
- Internal air compressor (where planned).
STANDARD ACCESSORIES
- Plasma cutting torch.
- Fitting for compressed air connection (where applicable).
- Earth cable
OPTIONAL ACCESSORIES
- Spare electrodes-nozzles kit.
- High current powered cutting torch (where planned).
- Spare electrodes-nozzles kit for high current powered torch (where
applicable).
- Gouging kit (where applicable).
3. TECHNICAL INFORMATION
DATA PLATE
The most important information regarding use and performance of the
plasma cutting system is summarised on the rating plate and has the
following meanings:
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
Fig. A
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
The machine consists essentially of power modules built on PCB's and
optimised for maximum reliability and minimum maintenance.
1 - Single phase power supply line, rectifier assembly and levelling
capacitors.
2 - Transistor (IGBT) switching bridge and drivers ; converts the rectified
mains voltage into high frequency alternating voltage and adjusts
the power according to the required cutting current/voltage.
3 - High frequency transformer: the primary winding is powered by the
voltage that has been converted by block 2; its function is to adapt
voltage and current to the values required for the cutting procedure
and at the same time to perform galvanic isolation of the cutting
circuit from the main power supply.
4 - Secondary rectifier bridge with levelling inductance: converts the
alternating voltage/current supplied by the secondary winding into
direct current/voltage with very low ripple.
5 - Control and adjustment electronics: controls cutting current
value instantaneously and compares it with the operator's setting;
modulates IGBT driver control pulses that make the adjustment.
Determines the dynamic current response during cutting and
oversees the safety systems.
CONTROL, ADJUSTMENT AND CONNECTION DEVICES
Front panel (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 manoeuvres: 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.
CONTROL PANEL (Fig. C1)
1 - Adjustment knob:
In any mode, it allows continuous current adjustment.
2 - Red led signalling compressed air internal circuit inhibition
(where planned).
When on, it indicates overheating of the electric motor windings on
the air compressor.
3 - Yellow led signalling a general or warning alarm of torch
consumables.
When on and fixed, it indicates overheating of some power circuit
components, or a malfunction on the inlet power supply voltage
(over or undervoltage).
OVER or UNDERVOLTAGE: blocks the machine if the power supply
voltage is out of range +/- 15% compared to the plate value.
- 6 -
(Fig. B)