Telwin TECHNOLOGY PLASMA 54 XT KOMPRESSOR (816147) Инструкция по эксплуатации онлайн [6/148] 664204

- 6 -

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 rst 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:

Fig. A

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 specications for main power supply:

- U

: Alternating voltage and frequency of power supply to the

machine (allowed limits ±10%):

- I

1 max

: Maximum current absorbed by the line.

- I

1e

: Eective current supplied

8- Performance of cutting circuit:

- U

: maximum no-load voltage (open cutting circuit).

- I

: Current and corresponding normalized voltage that the

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 identication 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 gures; the exact values of the technical specications

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.

(Fig. B)

1 - Single phase power supply line, rectier assembly and levelling

capacitors.

2 - Transistor (IGBT) switching bridge and drivers ; converts the rectied

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 rectier 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 tted to the head of the torch, or if it is not

tted 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 xed, 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.

Telwin TECHNOLOGY PLASMA 54 XT KOMPRESSOR (816147) Инструкция по эксплуатации онлайн [6/148] 664204

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