ESAB | PROTIG 315 | Service manual | ESAB PROTIG 315 User manual

ESAB PROTIG 315 User manual
PROTIG 315
INVERTER
TIG welding equipment
Service manual
0740 801 001
9502
Valid from machine no 240 244--0079
List of contents
Page
INTRODUCTION
RATING PLATE
DESCRIPTION OF OPERATION
THE CONTROL UNIT
THE POWER UNIT
CONNECTION DIAGRAM, PROTIG 315
BLOCK DIAGRAM, CONTROL BOARD, K70.1
COMPONENT POSITIONS CONTROL BOARD, K70.1
COMMUNICATION, POWER UNIT / CONTROL UNIT
COOLING UNIT
FAULT--TRACING IF THE MAIN FUSE BLOWS
SWITCH UNITS
MOS TESTER
SOFT START
TECHNICAL DESCRIPTION
ELECTRONIC UNIT (CIRCUIT BOARD RACK)
INSTALLATION
OPERATION
WELDING
MAINTENANCE
ORDERING SPARE PARTS
FAULT / ERROR CODES
ASSEMBLY INSTRUCTIONS
MAIN DIMENSIONS
SPARE PARTS LIST, PROTIG 315
2
4
7
7
27
30
32
34
44
44
45
46
46
47
48
52
55
57
57
57
58
58
60
62
63
INTRODUCTION
This service manual is intended for use by technicians with electrotechnical training. Use it
for fault tracing and repair of the PROTIG 315 inverter.
A programming guide, which can be of help when programming the machine, is available for
the PROTIG 315. Ordering numbers for the respective languages are as follows:
S
S
S
S
442 446--004 Swedish
442 446--005 English
442 446--006 German
442 446--007 French
This manual applies to machines with serial numbers of 240 244--0079 and above. It contains
details of all design modifications incorporated up to and including December 1994.
The Protig 315 has been designed and tested in accordance with the international
EN 60 974--1 (IEC 974--1).
On completion of service or repair, it is the responsibility of the person(s) performing
the work to ensure that the product still complies with the requirements of the above
standard.
ESAB reserves the right to make changes without prior notice.
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-- 2 --
WARNING
ARC WELDING AND CUTTING CAN BE INJURIOUS TO YOURSELF AND OTHERS.
TAKE PRECAUTIONS WHEN WELDING. ASK FOR YOUR EMPLOYER’S SAFETY
PRACTICES WHICH SHOULD BE BASED ON MANUFACTURERS’ HAZARD DATA.
ELECTRIC SHOCK -- Can kill
S
S
S
S
Install and earth the welding unit in accordance with applicable standards.
Do not touch live electrical parts or electrodes with bare skin, wet gloves or
wet clothing.
Insulate yourself from earth and the workpiece.
Ensure your working stance is safe.
FUMES AND GASES - Can be dangerous to health
S
S
Keep your head out of the fumes.
Use ventilation, extraction at the arc, or both, to keep fumes and gases from
your breathing zone and the general area.
ARC RAYS - Can injure eyes and burn skin.
S
S
Protect your eyes and body. Use the correct welding screen and filter lens
and wear protective clothing.
Protect bystanders with suitable screens or curtains.
FIRE HAZARD
S
Sparks (spatter) can cause fire. Make sure therefore that there are no
inflammable materials nearby.
MALFUNCTION
S
Call for expert assistance in the event of malfunction.
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE
INSTALLING OR OPERATING THE EQUIPMENT
PROTECT YOURSELF AND OTHERS!
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-- 3 --
RATING PLATE
The rating plate is fitted to the rear of the machine. It is shown in the diagram below,
followed by an explanation of the various terms.
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1
2
3
PROTIG 315 INVERTER is the type designation for this machine. PROTIG
indicates that it is a programmable TIG welding power unit. The numerals
’315’ indicate the maximum welding current, while INVERTER is the
principle of operation.
These symbols indicate that PROTIG incorporates an inverter, a transformer
and a rectifier.
The figures indicate that the current range is 5 -- 315 A and give the voltage/
current characteristic for TIG welding.
The specified voltages of 10 and 23 V show that ESAB complies with the
international arc voltage characteristic as specified in IEC 974--1.
X
=
The intermittence factor, which describes for how long welding
can be carried out at the specified welding data, expressed as a percentage of
a ten--minute period..
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I2
=
The current at the respective intermittence factor.
U2
=
The arc voltage.
U0
=
The no--load (= open--circuit) voltage..
-- 4 --
4
Indicates that the equipment is intended for connection to a three--phase 50 Hz
or 60 Hz supply. Alteration of internal connections allows the machine to be
connected to different mains voltages (208 -- 500 V).
I1
indicates the primary currents at the respective intermittence factors.
5
AF indicates that the machine is fan--cooled..
IP23 is the enclosure class in respect of protection against water and
penetrating objects.
6
The machine’s serial number, in the form of three groups of numerals (xxx
yyy zzz)
The first group (xxx) is the version. The figures shows the year and week of
design approval..
The second group (yyy) shows the year and week of final test of the machine,
e.g. 203 indicates 1992, week 3.
The third group (zzz) consists of three or four numerals, and is a consecutive
serial number in the range 0001 -- 9999.
7
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Shows that ESAB complies with applicable national and international
standards.
-- 5 --
SIMPLIFIED BLOCK DIAGRAM, PROTIG 315
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-- 6 --
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DESCRIPTION OF OPERATION
This description of operation refers to the diagrams shown under the heading for each feature.
For the sake of clarity, the circuit board designations are shown in brackets.
The description is divided up into four parts: the control unit, the power unit, the cooling unit
and communication between them.
PROTIG 315 has three different electrical neutral points.
In the power unit, the negative pole of the welding power supply is the neutral..
In the control unit, it is the chassis that is the neutral, except for the current regulator
board and parts of the AVC board, which take the positive pole of the welding current
circuit as their neutral (DC00).
When making any measurements, make sure that you are measuring with respect to the
correct neutral.
WARNING! MAINS VOLTAGE!
Mains transformer K3, terminal block K11, main contactor K8, rectifiers K27, filters K96 and
K96.1, capacitor K88, HF unit K74, switch units K77, parts of the control circuit board and
the cooling unit are at mains voltage.
Don’t forget to refit the Perspex cover after working on live parts at mains voltage, such as
buffer capacitor K88.
THE CONTROL UNIT
General
The control unit controls the motors, the gas valves, the welding current and starting/stopping
the power unit.
The control unit contains a computer consisting of a counter board (A01), the CPU board
(A03) and the I/O board (A06), which monitor and control the process with the help of the
regulator boards and the relay board. The power supply unit (A21) provides the various
voltages required by the control equipment.
Welding programs are stored in the CPU board memory circuits. When the machine is turned
off, the contents of the memory are retained by a lithium battery that is fitted to the board.
The battery has a life of 2500 hours if the machine is not in use. See page 56 for instructions
on how to replace the battery.
Motor regulator boards A08, A09 and A10 are identical, and can be interchanged, which can
be helpful when testing to see if one of them is defective.
Functions that are identical from one board to another are described only once, for ’rotation’.
Descriptions of wire feed and weaving refer to the rotation description.
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-- 7 --
BLOCK DIAGRAM, PROTIG 315
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-- 9 --
POWER SUPPLY UNIT, A16
Power supply unit A21 provides the necessary voltages to the circuit boards in the control
unit. It also incorporates protective functions, interrupting the supplies if the voltages vary by
more than 5% from the nominal value. An LED (A42) on the front of the unit indicates that
the supply has not been interrupted.
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42 V AC is supplied to the PSU input from transformer K53 via the front suppression board
(A16). Connection is to pins 1 and 2 in connector K3.
The output voltages can be measured at connector K2, where the wires are marked P. The
wires run to the back plane (A14) and supply the circuit boards on the rack. The voltages
shown below are as measured at K2 with the chassis as the neutral point.
P2
P3
P8
P9
P10
P11
=
=
=
=
=
=
about
+36V NB:with no load here, the voltage is about 55V.
+60V
--12V
+12V
+5V
+10V
Connector K2. Voltages measured relative to P5 (the positive welding current terminal) as the
neutral (DC00):
P4 =
--15V
P6 =
+15V
The front HF suppression card (A16) receives its power supply through connector K3. 42
V AC is supplied to pins 1 and 2 from the power unit to PSU A21.
Connector K3. The chassis as the neutral:
Pin
”
”
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6
7
8
=
=
=
+5V
--12V
+12V
-- 10 --
Connector K3. Pin 4 (welding current positive terminal) as the neutral (DC00):
Pin
”
3
5
=
=
--15V
+15V
Power supply unit A16
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-- 11 --
ADJUSTING THE POWER SUPPLY VOLTAGES
If any voltage from the PSU varies by more than about 5% under normal load conditions, it
may be necessary to adjust the voltage in order to prevent the protective circuitry from
operating and interrupting the power supplies.
When adjusting the voltages, measure them at the PSU circuit board in order to avoid any
voltage drops across the PSU connector terminals.
The adjustment and test points on the PSU are as follows:
Adjustment potentiometer
Test points
P1
P3
P4
P5
P6
Left--hand side of
”
”
”
”
”
”
”
”
= adjustment of
=
”
=
”
=
”
=
”
+5 volt
+12 volt
--12 volt
+15 volt
--15 volt
R63 to the chassis
R65 ”
”
R61 ”
”
R 67 to the welding positive
R 69 ”
”
MONITORING THE POWER SUPPLY VOLTAGES
Two separate, stabilised voltages of 8 V, which are each dropped to 3.00 V and 3.30 V by
potential dividers, are used for monitoring the power supply voltages.
Each output voltage supply feeds a potential divider which produces an output voltage signal
of 3.15 V when the output voltage is correct. If this voltage signal varies outside the limits of
3.00 V or 3.30 V, it indicates that the voltage from which it is derived has varied by more than
5%, and the PSU interrupts all the supply voltages.
Measure the 8.00 V monitoring voltage for the 12 V and +5 V supplies at the top of resistor
R38, relative to the chassis as neutral. See the diagram on page 9.
Measure the 8.00 V monitoring voltage for the 15 V supply at the top of resistor R81,
relative to the positive pole of the welding current supply (DC00) (pin 4 in K3). See the
diagram on page 10.
The 3.00 V and 3.30 V reference voltages cannot be adjusted, although it can be worth
checking them if the PSU constantly trips out.
Measure the voltages at the integrated circuits on the board, as shown in the table below and
in the diagram on page 9
IC no.
LEG
VOLTAGE
U5
U5
U6
U6
U5
U4
U4
U6
U6
11
6
9
4
7
5
7
5
7
3.30 V
3.00 V
3.30 V
3.00 V
3.15 V
3.15 V
3.15 V
3.15 V
3.15 V
(--12 V)
(+ 5 V)
(+12 V)
(+15 V)
(--15 V)
To the chassis
To the chassis
To the chassis
To the chassis
To the chassis
To the chassis
To the chassis
To the chassis
To the chassis
If the voltages are not as shown above, after the output voltages have been adjusted, replace
the entire PSU.
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-- 12 --
CIRCUIT DIAGRAM, CIRCUIT BOARDS A08--A10 ( ROTATION, WIRE FEED and
WEAVING )
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-- 13 --
ROTATION
SUPPLY VOLTAGES to the motor regulator boards (A08, A09, A10)
C2, C31, A10 and C10
A8 and C8
C32
C1
A32
0V
about +60V
+12V
--12V
+5V
Signals are received from the I/O board (A06), via the front board (A15) and the connection
board (A07), which control the motor regulator board (A10).
S A binary 10--bit signal, defining the set speed, is supplied to pins A2 (MSB) to C21
(LSB) on board A10, where ’1’ = 0V and ’0’ = about 4V: in other words, the signal is
active high.
Be careful when measuring these signal voltages, as the I/O board will be destroyed by any
short circuit between ’1’ and ’0’. The codes have been selected so that pins on the same side
should be at the same potential.
Use the extension board when making the measurements. The test points for the various pins
are marked on the board.
S
Speed
682
341
Pin
A2
C3
A3
C4
A4
C5
A5
C6
A21
C21
Code
0
1
0
1
0
1
0
1
0
1
Code
1
0
1
0
1
0
1
0
1
0
( Programmed value )
0 = 4V
1 = 0V
To the chassis
”
”
Pins A6 and C7 are the inputs for signals that control the direction of rotation.
A6
A6
A6
=
=
=
5V
5V
0V
and
and
and
C7
C7
C7
=
=
=
5V
0V
5V
when the motor is stationary.
for forward rotation.
for reverse rotation.
Measure these signals between A6 and 0 and between C7 and 0 respectively, but never
between A6 and C7, as this could damage the I/O board and the motor board.
The speed signal from the tachogenerator is received via the rear HF suppression card (A17)
and the back plane (A14) at pins A16 and C16 on the motor regulator board. At maximum
speed, it must be about 1.80 V AC, as measured between pins A16 and C16. Note that DC
tachogenerators may also be used, giving outputs of about 1.62 V DC (e.g. the PRI 18 -- 220).
Pins A11 and A12 are inputs for the armature voltage. They are connected via the back plane
to the rear HF suppression card. At a speed of 400 r/min, the voltages are:
Forward rotation
Reverse rotation
Stationary
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A11 = about 7.5V and A12 = about 0.5V
A11 = about 0.5V and A12 = about 7.5V
A11 = about 0.5V and A12 = about 0.5V
-- 14 --
To the chassis
”
”
”
”
WIRE FEED
For circuit board A09, see the diagram on page 13
Power supply voltages for the motor regulator board: see Rotation on page 14.
In the same way as for the Rotation control function, signals are received from the I/O board
(A06) via front board (A15) and connection board (A07) to the motor regulator board (A09).
S
A binary 8--bit signal, defining the set speed, is supplied to pins A2 (MSB) to C6 (LSB),
where ’1’ = 0V and ’0’ = about 4V. Be careful when measuring these signal voltages, as
the I/O board will be destroyed by any short circuit between ’1’ and ’0’.
’1’
=
Speed
Speed
S
0V
and
’0’
=
about 4V.
180 r/min must give
90 r/min must give
1 0 1 0 1 0 1 0 on pins A2--C6.
0 1 0 1 0 1 0 1 on the same pins.
Signals controlling the wire feed direction are supplied to pins A6 and C7.
A6
A6
A6
=
=
=
5V
5V
0V
and
and
and
C7
C7
C7
=
=
=
5V
0V
5V
when the motor is stationary.
for forward feed.
for reverse feed.
Measure these signals between A6 and 0 and between C7 and 0 respectively, but never
between A6 and C7, as this could damage the I/O board and the motor board.
The speed signal from the tachogenerator is received via the rear HF suppression card (A17)
and the backplane (A14) at pins A16 and C16 on the motor regulator board (A09). At
maximum speed (264 r/min), it must be about 1.62 V AC, as measured between pins A16 and
C16.
WEAVING
For circuit board A08, see the diagram on page 13.
Power supply voltages for the motor regulator board: see Rotation on page 14.
In the same way as for the Rotation control function, signals are received from the I/O board
(A06) via front board (A15) and connection board (A07) to the motor regulator board (A08).
S
A binary 8--bit signal, defining the set speed, is supplied to pins A2 (MSB) to C6 (LSB),
where ’1’ = 0V and ’0’ = about 4V. Be careful when measuring these signal voltages, as
the I/O board will be destroyed by any short circuit between ’1’ and ’0’.
’1’
=
0V
and
’0’
=
about 4V.
A speed of 6.8 must produce a code of 1 0 1 0 1 0 1 0 on pins A2--C6..
A speed of 3,4 must produce a code of 0 1 0 1 0 1 0 1 on the same pins.
S
Signals from the I/O board indicating the motor direction are received on pins A6 and
C7.
See Rotation on the previous page.
Measure these signals between A6 and 0 and between C7 and 0 respectively, but never
between A6 and C7, as this could damage the I/O board and the motor board.
The speed signal from the tachogenerator is received via the rear HF suppression card (A17)
and the backplane (A14) at pins A16 and C16 on the motor regulator board.(A08). At
maximum speed (10.0), it must be about 1.80 V AC, as measured between pins A16 and C16.
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-- 15 --
AVC
Circuit board A11: see the circuit diagram on page 17.
AVC (arc voltage control) is a function that monitors the arc voltage and adjusts the distance
between the wire and the workpiece during welding. A motor, controlled by the AVC-regulator board, adjusts the arc length.
Power supplies to the AVC--regulator:
A25 and C25
A31
A1
A2, C31, A10, C10
A32
A7
0V
+15V
--15V
0V
+5V
+10V
Welding positive (DC00)
The arc voltage can be measured internally at the welding terminals or externally by means of
an instrument cable connected to the welding gun. When using internal measurement, a link
is fitted in connector K82. See the circuit diagram on page 8.
The measured value is received on the filter board (A18) and passes to D1 on the backplane
(A14) and pin A6 on the AVC board (A11). The relay on the filter board is controlled by the
control board in the power unit (K70.1), and disconnects the signal input while HF ignition is
activated.
An 8--bit code, indicating the arc voltage set value, is received by the AVC regulator from the
I/O board (A06) via front board A15 and connection board A07. Pin A24 is the Most
Significant Bit and A22 is the Least Significant Bit.
’1’
=
0V
and
For an arc voltage of 16.5 V
For an arc voltage of 25.0 V
’0’
=
about 4V.
the code must be
the code must be
0 1 0 1 0 1 0 1 on A24--C22.
1 0 1 0 1 0 1 0 on A24--C22.
The AVC board compares the measured value with the set value. The result is output on A30
and C30 and passed to the counter board (A01). From I/O board, the signal is then passed to
pins A29 and C29, which control whether the AVC motor is to run forwards or backwards or
remain still.
A29 = 5 V
A29 = 0 V
A29 = 5 V
and
and
and
C29 = 5V
C29 = 5V
C29 = 0V
The welding head remains stationary.
the welding head moves down.
the welding head moves up.
The AVC motor does not have a tachogenerator: when it runs, it does so at maximum speed..
The motor armature voltage (ca 10V) appears on pins C19 and A19, and runs through the rear
HF suppression card to connector A48.
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-- 16 --
CIRCUIT DIAGRAM, CIRCUIT BOARD A11
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-- 17 --
CURRENT REFERENCE
See the circuit diagram on page 19.
Power supply voltages to current reference board A12:
A25, C25
A31
A1
0V
+15V
--15V
C31, C2
A32
0V
+5V
(DC00)
When the arc has struck, the power unit circuit board applies a signal on M1.
This signal can be measured at connector K 45.4 on control circuit board K 70.1.
When the arc is struck:
0V
When the arc is extinguished about 3.5V
as measured from the earth terminal
on the control circuit board.
”
”
”
The signal supplies an optocoupler on the backplane (A14) which, with two potential
dividers, applies the voltage signals to pins C13 and C14 on the current reference board
(A12).
A red LED on the current reference board lights to show that the signal is present.
The voltage, as measured between C14 and C13, with the negative on C14, must be:
with the arc lit
with the arc extinguished
about +1.3V
about --1.3V
A21 supplies a signal to the counter board, which must be:
with the arc lit
with the arc extinguished
5V
0V
To the chassis
”
”
A 12--bit code, indicating the welding current set value, is received by the current reference
board (A12) from the I/O board (A06) via front board A15 and connection board A17. Pin
C20 is the Most Significant Bit and C21 is the Least Significant Bit.
Be careful when measuring these signal voltages, as the I/O board will be destroyed by any
short circuit between ’1’ and ’0’.
’1’
=
0V
A current of 136A
A current of 273A
and
’0’
=
about 4V.
must give a code of
must give a code of
0 1 0 1 0 1 0 1 0 1 on C20--A22.
1 0 1 0 1 0 1 0 1 0 on C20--A22.
The current reference signal from pin A13 is taken through a buffer amplifier and relay (RE1)
on the backplane to M10 on the power unit control circuit board (K70.1). The relay protects
the power unit against uncontrolled current reference signal in the event of loss of power
supply to the buffer amplifier input.
The voltage between A13 and A25 is about 2.5 V at 100 A welding current set value.
The voltage between M10 and M7 is about 2.5 V at 100 A welding current set value.
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-- 18 --
CIRCUIT DIAGRAM, CIRCUIT BOARD A12
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-- 19 --
CURRENT REGULATION, SIMPLIFIED
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-- 20 --
START FUNCTION, MANUAL
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-- 21 --
GAS VALVES
See the circuit diagram on page 23.
Power supply voltages to relay board A13:
C2 and C31
A32
0V
5V
Control signals to the relay board (A13) from the I/O board (A06), via the front board (A15)
and connection board (A07) are connected to pins C30 (starting gas), C32 (root gas) and A31
(welding gas).
The inputs are active low, i.e. the voltage on them is 0 V relative to the chassis when the
relays are energised.
The signal to C4 from the I/O board must be 0 V to energise the relays.
Relays RE6, RE7 and RE8 on the relay board control the gas valves for starting gas, root gas
and welding gas respectively. 42 V AC. is supplied to the relay board via pin A17, and the
relays switch this supply to the respective gas valves
A gas flow switch supplies a signal to the I/O board if the gas flow rate is too low or
completely absent. If the gas flow rate is correct, the switch is closed.
RE3 is used during starting -- see also the Starting Function description on page 21.
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-- 22 --
CIRCUIT DIAGRAM, CIRCUIT BOARD A13
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-- 23 --
CIRCUIT DIAGRAM PROGRAMMING UNIT
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The programming unit is connected to the control unit computer via the front HF suppression
card (A16). See the circuit diagram on page 8.
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-- 24 --
EPSON PORTABLE COMPUTER
PROTIG 315 units with serial numbers below 240--244--105 (= manufactured prior to
940201) are supplied with an Epson HX--20 portable computer.
Welding programs can be transferred to and from the PROTIG and the HX--20, where they
are stored on microcassette tapes. The HX--20 also incorporates a printer, on which the
welding programs can be printed out.
The HX--20 computer communicates with the CPU board (A03) via contact E107 and the
front suppression card (A16).
apa2dp04
PROTIG 315 units with serial numbers higher than 240--244--106 (= manufactured after
940201) are instead fitted with the PROFILE system. This consists of two 3,5” diskettes, a
connection cable and instructions.
An ordinary PC can be connected to the PROTIG 315 through the connection cable. The
software supplied on the diskettes enables welding programs to be stored in the PC.
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-- 25 --
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-- 26 --
THE POWER UNIT
The main elements of the welding current power unit are described in the Component Description on page 28.
The inverter principle
The PROTIG 315 is an inverter power unit, which is switched on the primary side and largely
similar to the Aristotig 315, using power MOSFETs as the switching elements.
The heart of the power unit consists of two identical halves, each with its own main transformer and group of switching transistors. On the secondary side there are two welding current diodes, four freewheel diodes and one inductor for each half.
The microprocessor on the control circuit board (K70.1) controls the starting current and HF
ignition. During welding, the control equipment (K71) provides a current reference signal to
the control board.
The 3 x 400 V mains power supply is connected to terminal block K11, rectified by K27.1--2
and smoothed by capacitor K88 to produce a voltage of 565V. This voltage is connected to the
primary side of the main transformer for short periods (0--17←s) at a switching frequency of
24 kHz. The period length is proportional to, and dependent on, the arc power. The control
board (K70.1) regulates the pulse durations to the switching transistors, using information
from the current shunt and the current reference signal.
Each voltage pulse to the main transformer primary produces a lower voltage pulse on the
secondary side. This is rectified by the welding current diodes and supplies the arc current,
flowing through the shunt and the inductor. Between pulses, the current is maintained by the
inductor and the freewheel diodes. The shunt is a non--inductive coaxial type that produces
an output signal of 120 mV at a welding current of 315 A.
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-- 27 --
COMPONENT DESCRIPTION, POWER UNIT
This component description refers to connection diagram no. 442 230 on page 30.
K1
K2.1
K2.2
Main transformers.
Welding current diodes: two sets of two. They rectify the secondary voltage
of the main transformer. Check them with a DMM in the diode mode, measuring from the welding current terminals. Check both the welding current and
freewheel diodes at the same time.
Freewheel diodes: two sets of four.
K3
Inductor K12 maintains the welding current through the freewheel diodes during the interval between two consecutive pulses from main transformer K1.
Check the diodes with a DMM connected to the welding current terminals.
Auto--transformer for connection to various mains voltages.
K6.1
K6.2
K8
See the instructions for connection details.
Main On/Off switch.
Cooling water pump On/Off switch.
Main contactor, controlled by switch K6.1.
If the contactor does not open after having been activated, it must be replaced.
The same applies if resistors K57 are burnt out or if rectifiers K87 have failed.
K11
K12
K13
K18
K21.1--3
K21.4--5
K21.6
K27.1--5,
7
K27.6
K28.1--2
K28.3
K31.1--2
K38.1
K38.2
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Mains supply terminal block.
Welding current inductor. The energy stored in the inductor’s magnetic field
maintains the welding current through the freewheel diodes (K2.2) during the
intervals between the current pulses from the main transformer.
Welding current terminals, type OKC 50.
Non--inductive coaxial shunt: output, 120 mV at 315 A.
Anti--surge 2 A fuse
Anti--surge 1 A fuse.
Anti--surge 5 A fuse.
Capacitor.
Filter.
Cooling fans for the power units.
Cooling fan for auxiliary transformer K3 and the cooling unit.
Thermal cutouts. See control circuit board K70.1, Fault Detector, on page 38.
Power On indicating lamp for main switch K6.1
LED, mounted on the front panel. Lights to indicate that the control board
fault detector (see page 38) has detected a fault.
-- 28 --
K38.3
K52
K53
K54--57
K69.1
K70.1
K70.2
K71
K74
K75
K77.1--2
K80
K87
K88
K91.1--2
K93.1
K93.2
K96
K97
K98
K99
K101
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On/Off indicating lamp for cooling water pump switch K6.2.
Control power supplies transformer for supply to circuit board K70.1. A 230 V
autotransformer winding supplies power to the fans, water pump and HF ignition device.
Control power supplies transformer for 42 V AC supply to control equipment
on circuit board K71.
Resistor.
Interference suppression board: protects against mains--borne interference.
Control circuit board for the power unit and HF unit.
Digital measuring equipment (not fitted to PROTIG/Prowelder).
Backplane, control unit.
HF ignition device, controlled from circuit board K70.1. The high--frequency
voltage is transformed up by HF coil K75. The HF is On for a maximum of
0.7 s and is interrupted when the arc strikes. (For machines manufactured prior
to 1992, the On time is 0.25 s.)
HF coil. Transforms up the high--frequency voltage from the HF unit.
Filter unit
Fuse, 6.3 A.
Mains rectifier, max. 35 A.
Smoothing capacitor for the rectified mains voltage.
The transistors in the inverter are power MOSFETs, a total of 24. Special requirements apply for testing them: see Switch Units and MOS Tester on page
46.
RC filter.
Resistor.
Transient protection. Removes transient voltage peaks not removed by K69.1.
Central connection point for current, gas and control cables to the TIG torch.
Water pump, 230 V, single--phase, 50/60 Hz, 110 W. Maximum cooling water
flow rate is 7.5 l/min.
Inductance, interference suppression.
Capacitor, interference suppression.
-- 29 --
CONNECTION DIAGRAM, PROTIG 315
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-- 30 --
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-- 31 --
BLOCK DIAGRAM, CONTROL CIRCUIT BOARD K70.1
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1
2
3
4
5
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POWER SUPPLY
START/STOP INPUT
HF CONTROL
SHUNT AMPLIFIER
ARC VOLTAGE INPUT
-- 32 --
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6
7
8
9
10
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FAULT DETECTOR
OVERVOLTAGE PROTECTION
CURRENT REFERENCE
PULSE WIDTH MODULATOR
GATE CIRCUITS
-- 33 --
COMPONENT POSITION DIAGRAM, CIRCUIT BOARD K70.1
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-- 34 --
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DESCRIPTION OF OPERATION, CONTROL CIRCUIT BOARD K70.1
The K70.1 circuit board carries a microprocessor and controls the welding power unit, the HF
ignition unit and the relay on the control unit filter circuit board (A18).
Only those parts of the board that have input or output connections to other parts of the system are described here. If the board is faulty, it must be replaced. After any replacement of
the board, the machines must be soft started: see Soft Starting on page 47.
The gate drive and overvoltage protection circuits are at mains voltage, while the rest of the
board is connected to the welding current circuit. The two parts are isolated from each other
by pulse transformers and optocouplers to provide 4.5 kV insulation withstand test voltage.
Unless otherwise specified, measure all voltages relative to the earth terminal on the circuit
board.
Items 1--10 below refer to the block diagram on page 32.
1.
POWER SUPPLY
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Bridge rectifier BR1 is supplied at 9 V AC from transformer K52 via connections E4 and
E5. Voltage regulator VR1 produces an output voltage of +5 0.03 V, which can be measured on the heat sink for VR1 and be adjusted by means of potentiometer R3. The 9
V AC supply is protected by a 1 A anti--surge fuse (K21.4)
Bridge rectifier BR2 is supplied at 22 V AC from transformer K52 via connections E7
and E8. Voltage regulator VR2 produces an output voltage of +22 V, which can be measured on the body of VR2. The 22 V AC supply is protected by a 2 A anti--surge
fuse(K21.3)
Zener diode D2 produces a stabilise +15 V supply. Two converters, VR4 and VR5, convert the +15 V supply to --15 V, which can be measured on the anode side of diode D64.
To adjust the 22/15 V supplies, measure the +15 V supply at board input A1 and adjust
by means of potentiometer R9.
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-- 35 --
2.
START/STOP INPUT
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Relay RE3, on the control unit relay board (A13), controls starting/stopping of the power
unit. When it is energised, a 42 V AC supply is applied to connections E1 and E2.
3.
HF CONTROL
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The control board computer controls relay RE2 which, when energised, supplies
230 V AC mains voltage to the HF unit (K74).
It also controls relay RE1, which interrupts the arc voltage signal connection to the AVC
board while HF ignition is in operation.
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-- 36 --
4.
SHUNT AMPLIFIER
The shunt voltage signal is 38.1 mV at 100 A and is linearly proportional to the welding
current.
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WARNING!
Short--circuiting the shunt signal during
welding can destroy the power unit.
Measure the shunt signal across resistor R120.
It is safest and simplest to measure at a 100 A resistive load.
Make a check measurement of the current using an external non--inductive shunt and
RMS multimeter.
If the shunt voltage signal is incorrect, the fault must be in the shunt or the coaxial cable.
5.
ARC VOLTAGE INPUT
* The arc voltage filter has
been modified. The two com-ponents marked in the diagram
have been added.
Machines manufactured after
week 28, 1994 are modified.
The arc voltage signal is received in pin I1 and, after filtering, is supplied to the computer.
When the arc voltage falls below 45V during starting, it indicates that the arc has been established. When the voltage rises above 45 V on conclusion of welding, the computer disconnects arc voltage control.
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-- 37 --
6.
FAULT DETECTOR
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If a fault occurs, the fault detector generates a blocking signal to the pulse width modulator and welding stops.
The signal to the pulse width modulator can be measured on the left--hand side of resistor
R127 (see the component positions diagram on page 34). The signal should be 0 V when
the pulse width modulator is disabled by the fault signal, and about 5 V when no fault is
signalled.
The yellow LED on the front panel indicates a fault. It is controlled by output I2 on the
control circuit board, which is at about +1,7 V when the LED is lit and below 0 V when
it is extinguished.
Reasons for faults can be:
S
THE COOLING UNIT
Not turned on.
When the cooling unit is turned on, the voltage at I4 will be 0 V, and +5V when it
is turned off.
S
S
S
THERMAL OVERLOAD TRIP
Has operated. The thermal overload trips reset automatically after a time delay for
cooling.
If a thermal overload trip does not reset, check it by disconnecting the terminals and
measuring its resistance.
The resistance must be 0τ when the trip is closed (cold machine) and >1 kτ
when it has operated (or is faulty).
If the thermal overload trips are measured with the machine in use, the voltage at I3
must be:
+15 V with the trip closed and 0 V with it operated.
S
COMPUTER FAULT
If the computer is faulty, it must be replaced..
S
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HIGH MAINS VOLTAGE
-- 38 --
7.
OVERVOLTAGE PROTECTION
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The voltage across capacitor K88 is received at inputs K1 and K6.
WARNING! DANGEROUS MAINS VOLTAGE
If the capacitor voltage exceeds 650 V, optocoupler IC21 will operate and trigger the
fault detector.
8.
CURRENT REFERENCE
Input M10 is a current reference volt
age signal from the control unit.. For a
welding current of 100 A, the voltage,
which is linearly proportional to the
welding current, is 2.5 V.
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The reference voltage is supplied through a buffer amplifier on the control circuit board
backplane (A14). This buffer amplifier is supplied from outputs M7, M8 and M9 of the
control circuit board. Voltages at these outputs should be:
M7
M8
M9
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=
=
=
0V
+15V
--15V
-- 39 --
9.
PULSE WIDTH MODULATOR
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The pulse width modulator controls the frequency and pulse length of the control pulses
to the MOSFET--transistors.
It is important that the frequency and maximum pulse length are within their specified
tolerances.
The pulse frequency must be 24 0.5 kHz, with a maximum pulse length of 40.5 1% of
the cycle time.
Current and voltage are maximum when the pulse length is maximum..
IC14 controls the pulse frequency, the pulse length and blocking of the pulses.
Transistor Q13 switches the supply to the pulse transformer primary winding. Diodes
D22 and D23 are squelch diodes that limit the voltage across Q13 when the magnetic
field in the transformer collapses.
NOTE
The frequency and pulse time are very important parameters. If they are incorrect, the
power transistors in the main circuit can be destroyed.
See also CHECKING THE GATE PULSES on page 42.
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-- 40 --
10. GATE CIRCUITS
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The four gate circuits are identical. The following description applies to one of them.
The pulse from terminal 3 on transformer TR1 is conducted via D35, D36 and circuit
board terminal J7 to the gate of the power transistors, returning via D38 and C86. Capacitor C86 is charged up to about 4 V by the gate pulse. The pulse peak voltage is about
+15 V. When the pulse goes negative, Q17 starts to conduct and supplies base current to
Q18, which pulls down the gate voltage to --4 V.
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-- 41 --
CHECKING THE GATE PULSES
Use an oscilloscope to examine the gate pulses from the control circuit board.
1.
2.
Turn off the machine.
In order to avoid mains voltage on the oscilloscope, disconnect gate connector
K45.2--3.
WARNING: the switch units and overvoltage protection circuit on the control circuit board are still at mains voltage.
3.
A dummy load is needed for each gate output normally connected to connector K45.2 in
order to allow the gate pulses to be measured. Make this load in the form of a 33 nF capacitor and a 4,7 W 0.5 W resistor connected in series.
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Dummy gate load
IMPORTANT! Never check the gate pulses with the transistor bridges connected:
use the dummy gate loads.
Connect the probe to gate output J1 and the earth connection to source J2 in connector
K45.2 on the control circuit board (K70.1).
4.
Turn on the power supply when the connections have been made. Use a welding program for manual welding with a hand torch (code 0.00). This avoids the need for any
motor to be engaged for rotation, and welding can continue until it is stopped manually.
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The gate pulses as measured across a dummy gate load on circuit board K70.1 between connections J1 and J2. .
If no gate pulses are found, go directly to item 8.
5.
Check that the pulse lengths are within the range 39.5 -- 41.5% of the cycle time, and that
the total cycle time is within the range 40.8 -- 42.6←s.
Measure the pulse length and cycle time at a signal level of 5 V/cm.
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-- 42 --
6.
7.
8.
Transfer the dummy gate load and measure the pulses between J1 -- J2, J3 -- J4, J5 -- J6
and J7 -- J8.
If any of the gate pulses are not within the above specified tolerances, replace circuit
board K70.1. Similarly, if any pulses exhibit a slow turn--off time (i.e. are not essentially
square waves), the board is faulty and must be replaced.
If no pulses are detected at the gate outputs, check the following:
a. Measure the supply voltages as in 1) (page 35) above.
b. Check the 42 V AC start/stop signal as in 2) (page 36) above.
c. Check the blocking signal from the error detector as in 6) (page 38).
d. Check that there is a current reference signal on M10 as in 8) (page 39).
e. Measure the voltage at input I1, which must be 0 V (the arc voltage signal).
f. Measure the shunt voltage across resistor R120, which must be 0 V.
If all the above checks indicate correct values, and yet there are not gate pulses at the
outputs, circuit board K70.1 is defective and must be replaced.
After replacing the control circuit board and/or any of the switch units, the machine must be
soft--started: see ’Soft Starting’ on page 47.
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Gate circuit
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-- 43 --
COMMUNICATION, POWER UNIT / CONTROL UNIT
Start/Stop
Pressing the Start pushbutton sends a signal via the front interference suppression card (A16)
to the counter board (A01) in the computer. From the computer’s I/O board (A06), the signal
passes via the front and rear connection boards (A15, A07) to relay RE3 on the relay board
(A13). This connects a 42 V AC supply to inputs E1 and E2 on the control circuit board
(K70.1).
If welding is manually controlled, the start signal is connected to an optocoupler on the front
interference suppression board (A16). The output signal from the optocoupler supplies a
starting signal to the relay board in the same was as for automatic starting.
Opto coupler on the control circuit board operates and supplies a signal to the power unit
computer, instructing it to strike the arc.
This energises the HF unit (K74) at 230 V AC (mains voltage)..
The HF coil (K75) transforms up the voltage from the HF unit.
A short current pulse, controlled by circuit board K70.1, is applied to strike the arc.
HF ignition stops as soon as the arc has struck, which is detected by the arc voltage falling
below 45 V. Operating time of the HF unit is limited to 0.75 seconds.
A signal indicating that the arc has struck appears on terminal M1 (K70.1). Voltages are as
follows:
Struck arc
0 V.
Extinguished arc
4 V.
The signal passes via an optocoupler on the backplane (K71) to the current reference board
(A12), where an LED indicates that it has been received.
The signal passes on to the computer, which generates a current reference for the current reference board, where it is converted to an analogue signal. It is then sent via a buffer amplifier
on the backplane (K71), back to the control circuit board (K70.1), input M10. A current of
100 A results in a signal of 2.5 V at input M10.
HF filter
The control unit incorporates a filter (A18) which filters the voltage signal to the AVC unit.
The relay that interrupts the connection from the arc during HF ignition is controlled from
circuit board K70.1, outputs F1 and F2.
THE COOLING UNIT
The cooling unit is a separate part of the machine. There are two quick connectors for water
on the front of the machine and a water inlet connection on the back.
The cooling unit contains 1.6 litres of a water/glycol mixture.
It can be fitted with a flow switch for connection to the fault detector circuit on the control
board (K70.1). A signal from this flow switch, indicating failure of the cooling water supply,
interrupts the welding process.
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-- 44 --
FAULT--TRACING IF THE MAINS FUSE BLOWS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Check that the correct mains fuse is fitted: it must be a 25 A anti--surge type.
Check that filter board K69.1 is undamaged.
Check that the main contactor is working correctly, and that the contacts are not burnt or
oxidised.
Check resistors K57 to make sure that they have not burnt out. Their resistance must be
10 W.
Check all diodes in rectifier bridges K87, using a DMM in Diode Test mode.
Check that capacitor K88 is not short--circuited.
Remove the capacitor and check its insulation resistance with a Megger. Check that it
can be charged to 600 V.
Check transient protection K96 to make sure that components or the circuit board tracks
are not damaged.
Check the filter capacitors for the mains rectifiers.
Check all switch units with a MOSTESTER: see Switch Units and MOSTESTER on
page 46.
Check the control pulses from circuit board K70.1: see Checking the Gate Pulses on
page 42.
Check the welding and freewheel diodes K2.1 and K2.2 with a DMM. Disconnect the
welding cables and measure between the welding current terminals. The diode anodes
are connected to the negative terminal. Remember to allow for the effects of the 2.2
kWdischarge resistor connected between the terminals.
If any component ’downstream’ of the main contactor has failed, e.g. a rectifier, the contactor must be replaced.
The machine is now ready to be soft--started: see the instructions on page 47.
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-- 45 --
SWITCH UNITS
The switch units consist of four heat sinks, each with six power transistors and a circuit board
The transistors control the current: maximum turn--on time is for 39.5 -- 41.5% of the cycle
time.
Older machine, with serial numbers below 0079, have a conduction time of 40.5 -- 43.5% of
the cycle time. When replacing these switch units, the circuit board must also be replaced by
the new version with the shorter conduction time.
There is no danger in fitting the new version of the circuit board with the old type of switch
units. The machine will work as if the mains voltage had been reduced by 4% as a result of
the shorter conduction period.
See also the special Service Information Note ’Mechanized TIG AD 92376’, dated 1992,
week 49, which gives details of all modifications made to machines with serial numbers of
0079 and above.
THE MOSTESTER
A MOSTESTER must be used to test the switch units.
This is a special instrument, and can be obtained only from ESAB’s Service Department in
Laxå. Order number is 468 469--001.
The following instructions describe how to use the MOSTESTER for testing the switch units.
Connection:
S Disconnect the power unit from the mains supply
S
Remove cables 06, 07, 044, 050 and 053 from the copper busbar between heat sinks
K91.1A and K91.1B.
S
Disconnect gate connector K45.3.
S
Connect the gate and source wires (red and yellow) from the MOSTESTER to the gate
and source wires (red and yellow or red and black) from the heat sink unit to be tested..
S
Connect the black wire (the drain) to the heat sink. It is important to connect it to the
correct heat sink, as otherwise indication will be incorrect. Bear in mind that the heat
sinks are varnished, which could cause poor contact with them and spurious fault indication.
Testing:
S Press the TEST pushbutton.
S If everything is correct, the red and green LEDs will flash alternately at a rate of about
1 Hz. Note that the red LED is never totally extinguished, but it should clearly go much
dimmer.
S If any of the transistors is/are short--circuited, the red LED will be continuously lit.
S Note that the green LED may still flash or be continuously lit.
S An open circuit in the transistor board is indicated by the green LED lighting continuously.
Check that there is good electrical contact between the black wire clip and the heat sink.
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-- 46 --
S
S
If you have found that the switch units are faulty, remove them from the machine and test
them once again before replacing them.
Switch units must be replaced in pairs.
SOFT STARTING
If the control circuit board (K70.1) and/or the switch units has/have been changed, it is important that the first start of the machine should be a soft start. If there is still any fault in the
machine, you will be able to discover it during soft starting.
S
S
S
S
S
S
S
S
S
Remove wires 048 and 050 from the copper busbar in the switch units and insulate them
well.
Disengage the HF ignition by disconnecting connector K45.8 (marked ’P’ on the Components Position Diagram) on control circuit board K70.1.
Connect a power supply with a 0.5 A current limit to capacitor K88, with the positive
connection to wire 043.
Set this power supply to maximum of 40 V.
Energise the remaining parts of the machine from their normal power supply.
WARNING: several parts of the machine are at mains voltage.
Select the manual welding mode (code 0.00), with at least 20 A welding current.
Check that the power supply unit is not being overloaded and reducing the voltage.
Measure the secondary voltage at the welding current terminals using a DMM or oscilloscope.
The voltage must be about 8 V, and the oscilloscope trace must have the following appearance:
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Secondary voltage as measured at the welding current terminals with a 40 V supply voltage.
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-- 47 --
TECHNICAL DESCRIPTION
The PROTIG 315 INVERTER is a programmable TIG welding machine with facilities for
programming welding operations, storing welding programs and transferring programs between similar machines.
It is intended for use with ESAB’s PRB/PRC/PRD/PRE/PRF/PRG/PRI pipe welding tools
and with the MTC20/MEI20 wire feed unit, or with the POA/PIA/POB tube welding tools
and the A25 component system. It can also be used with manual TIG torches and with robots. It fulfils the requirements of IEC 974.
TECHNICAL DATA
Programmable TIG welding equipment
Permissible load (DC) for the power unit:
Intermittence, %
Current (A)
Voltage (V)
100
200
18
Permissible load (DC) for welding tools
60
250
20
35
315
23
See the respective instructions
Working range (DC)
5 -- 315 A
Maximum no--load voltage
67 V
No--load power
500 --600W
Ambient temperature:
during transport
during welding
--25C -- +55C
--10C -- +40C
Relative humidity:
up to 50%
Up to 90% (storage only)
at +40C
at +20C
Temperature class
F (155C)
Protection
IP 23 AF
Efficiency and power factor
See page 60
Supply voltage variation
Less than 2A for 10% mains voltage
variation
Program sectors
1 -- 999
Memory capacity
about 150 programs
Battery backup
2500 hours
Weight (excluding trolley)
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133 kg
-- 48 --
THE PROTIG 315 INVERTER
consists of:
14. Control unit (front panel): see picture on page 50
15. Power unit and HF unit
16. Elektronic unit: see picture on page 52
17. Cooling unit: see picture on page 79
18. Programming unit: see picture on page 53
19. Rear panel: see picture on page 51
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-- 49 --
The following items are fitted to the front panel:
1.
2.
3.
4.
5.
6.
7.
Main On/Off switch (6.1)
(positions 0 and TIG)
Indicating lamp (white) (K38.1)
for mains power On
Indicating lamp (white) (K38.3)
for cooling unit On
On/Off switch (K6.2)
for cooling unit
Connector (K97)
for gas/current for supply
to manual torch
D--type socket, 15--way, ’RECORDER’ (A36)
for connection to printer
D--type socket, 37--way ’COMMUNICATION’
(A38) for connection to PC or
EPSON HX--20. ESAB’s data base
PROfile program is supplied on
diskettes and can be installed on any
IBM--compatible PC (386 or better).
The older EPSON HX--20 can also
be connected.
Frontpanel
8.
9.
10.
11.
12.
13.
14.
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Important! Neither the PC nor the EPSON may be left connected when welding is
in progress
Quick connector
for cooling water IN
Quick connector
for cooling water OUT
Cannon connector, 32--pole, ’PROGRAMMING UNIT’ (A35)
for connection to the programming unit
LED (green) (A42)
indicates that control power is available
Terminals (K13)
for welding current cable connections
-to the welding gun
+ to the workpiece
LED (yellow) (K38.2)
overvoltage/overtemperature indication
Remote control, hand torch
NB:
When welding with tools without water cooling, use the
accompanying water bypass connector (442 811--880),
in order to maintain water circulation..
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-- 50 --
The following items are fitted to the rear panel of the machine:
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Rear panel
1.
2.
3.
4.
5.
6.
7.
8.
Cannon connector, 6--pole, ’ROBOT’ (A49)
for connection of robot. Can also be used for Emergency Stop function: see page 8.
Cannon connector, 7--pole, ’PRB’ (A47)
for connection of PRB/PRC/PRE/PRF/PRG/PRI tube welding tools.
Cannon connector, 24--pole, ’PIA/POA/MTC20/MEI20’ (A48)
for connection of POA/PIA/POB tube welding tools or MTC 20/MEI 20wire feed units
and PRC/PRD/PRE/PRF/PRI/A25 pipe welding tools.
Hose connection ’ROOT GAS’
for root gas OUT
Input, 2--pole, ’ARC VOLTAGE MEASUREMENT’ (K82)
for arc voltage measurement from welding tool.
Hose connection ’ROOT GAS’
for root gas IN
Hose connection ’WELD GAS’
for welding gas IN
Hose connection ’START GAS’
for starting gas IN
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-- 51 --
ELECTRONIC UNIT (CIRCUIT BOARD RACK)
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PROTIG 315 electronic unit. (The numbers in the picture are the
component numbers, except that A is not shown).
A01
A03
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
A17
A18
A21
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Counter board (circuit board)
S
Monitors the process with the CPU board.
S Contains/provides time functions for welding, pulse and slope functions.
S Interfaces the keyboard and display to the computer.
CPU board with 16 kbyte Read/Write Memory and EPROM (circuit board) stores
welding
programs and processes and executes instructions.
I/O board (circuit board): controls all welding activities.
Connection board (circuit board).
Motor board (circuit board) for weaving motion.
Motor board (circuit board) for wire feed.
Motor board (circuit board) for rotation action.
Note that motor boards A 08 -- A 10 are identical
Motor board (circuit board) for arc length adjustment.
Current reference board (circuit board).
Relay board (circuit board) with relays for control of solenoid valves and starting
functions.
Backplane (circuit board).
Front board.
Front suppression board (circuit board).
Rear suppression board (circuit board).
Filter board for arc voltage measurement.
PSU.
-- 52 --
E03
Programming unit: see also programming manual (442 446--004).
Setting and programming of welding parameters:
S
S
S
Pressing numeric keys for required values.
Pressing parameter keys for required unit; e.g. ampere, second or cm/min.
The programmed value or position is shown on the display.
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-- 53 --
E09
HX 20 programmable portable computer, with printer and microcassette tape unit.
It complements the internal welding program memory in the electronic unit.
Welding programs can be transferred to or from the electronic unit. Programs that
are transferred from the electronic unit welding program memory are merely copied, i.e. the program remains in the library memory on the CPU board (A 03).
E10
The Epson HX--20 computer was supplied with the PROTIG 315 until 1/1--1994,
after which it was replaced by ESAB’s PROfile data base, described below. However, newer versions of the PROTIG 315 are still compatible with the Epson
HX--20, i.e. it can still be connected to them.
PROfile data base program. For storage and transfer of welding programs between the PROTIG 315 and any IBM--compatible PC. Communication between
the PC and PROTIG is serial.
The connection is made between the 37--way D--type connector on the PROTIG
(marked ’COMMUNICATION’) and the PC’s 25--way series port. An adapter is
supplied for use if the PC has a 9--way serial port.
Important!
Neither the PC nor the EPSON HX--20 may remain connected to the PROTIG when welding is in progress.
apa2dp04
cpro1de5
-- 54 --
INSTALLATION
As standard, the PROTIG 315 INVERTER is supplied connected for a 3--phase 380 V /400 V
supply.
The data plate with serial number and connection data is fitted to the rear of the equipment.
S
S
S
S
S
S
S
S
S
S
S
S
S
S
MTC 20 wire feed unit, see instructions 154 432--007
MEI 20 wire feed unit, see instructions 441 457--001
PRB 3--20 pipe welding tool, see instructions 154 432--009
PRB 18--220 pipe welding tool, see instructions 154 432--005
PRC 18--220 pipe welding tool, see instructions 333 596--001
PRD pipe welding tool, see instructions 333 807--001
PRE pipe welding tool, see instructions 333 835--001
PRG pipe welding tool, see instructions 441 813--001
PRI pipe welding tool, see instructions 442 302--001
POA/PIA tube welding tool, see instructions 332 414--010
POB tube welding tool, see instructions 334 771--001
A25 automatic TIG welder, see instructions 441 916--001
Block diagram, see figure on page 8.
Dimensions, see figure on page 62.
1.
Select a suitable place for installing the PROTIG 315 INVERTER, so that:
S Cooling air can circulate freely through the ventilation openings.
S Build--up of dust and metal particles is minimised.
S Moist air or corrosive fumes cannot be sucked in.
Check the coolant level in the cooling unit tank.
The coolant is 50% water and 50% glycol.
Fit the trolley (if required), as shown on page 60.
Check that the equipment is connected for the correct mains voltage and that the correct
fuse rating is used.
Fuse ratings and wire sizes shown below are as prescribed in Swedish regulations. If
sizes and/or ratings differ in other countries, they must be followed.
2.
3.
4.
5.
Mains voltage
50 Hz 220 V
380 V
415 V
500 V
6.
Cable area
4 mm2
2.5
2.5
2.5
Fuse
25 A
20 A
20 A
20 A
The mains cable supplied with the equipment is rated for use with a 400 V or higher
mains voltage.
If the machine is to be used on a 220 V supply, or if a longer mains cable is needed, then
a thicker cable should be used.
cpro1de5
-- 55 --
7.
Connect all three phases of the PROTIG 315 INVERTER to the supply, and make protective earthing connections as required by regulations. The earth conductor must be connected to the bolt marked with an earth symbol on the plate in front of the mains terminal
connection block (K11).
See the diagram below and on the inside of the right--hand side panel of the machine.
apa2dp13
Terminal block connections (control power supply transformer) for various mains voltages.
S
S
Route the mains cable through the rear panel of the cooling module.
Connect the earth continuity conductor.
apa2dp20
Earth connection on the welding rectifier
8.
On the cooling unit
Connect the welding current cable and return current cable to the negative and positive
terminals respectively. (See the diagram on page 49.)
S Check that the welding current cable terminals are properly tightened.
S It may be necessary to use thicker welding current cables in order to reduce voltage
drop when extra long cables are being used.
9. Connect the shielding gas supply to the respective hose connections.
10. Connect the PRB/PRC/PRE/PRF/PRG/PRI pipe welding tool to the 7--pole connector (A
47 ’PRB’) on the rear of the machine. See the diagram on page 51.
11. Connect the MTC 20/MEI 20 wire feed unit, the PRC/PRD/PRE/PRF/PRI pipe welding
tool or the POA/PIA/POB tube welding tool to the 24--pole connector (A 48 ’PIA, POA,
MTC 20, MEI 20’) on the rear panel of the machine. See the diagram on page 51.
cpro1de5
-- 56 --
12. Connect the programming unit to the ’PROGRAMMING UNIT’ connector (A 35) on the
front panel of the machine. See the diagram on page 50.
OPERATION
1.
2.
See the chapter entitled ’Operation’ in the instructions for the respective welding tool.
Set the required welding parameters and program the equipment as described in the
PROTIG 315 INVERTER Programming Manual (order no. 442 446--004).
WELDING
S
S
S
S
S
S
S
Check that all cables, welding tools and the return current cable are properly connected.
Check that the correct wire is fitted in the welding tool, and that its tip is correctly
ground.
Set the required gas flow; 5 -- 10 l/min (e.g. for argon 99,95).
Turn the main power supply switch to position 1.
Turn the cooling unit control switch to position 1.
Check that cooling air flow is not obstructed.
Set all welding parameters in accordance with the instructions in the programming manual.
MAINTENANCE
IMPORTANT:
All service should normally be carried out by an authorised ESAB service technician.
1.
2.
Removal of dust.
S Blow the unit clean as and when required. Use compressed air at reduced pressure.
Replacing the battery on the CPU board (A 03).
The battery has a life of about 2500 hours if the machine is not in use.
S remove the left--hand side panel of the machine and locate the CPU board (A 03). It
is the second circuit board from the left in the board rack.
WARNING: If the battery voltage is totally removed, even very briefly, the contents
of the memory will be lost.
A special battery adapter has therefore been developed (see picture on page 58) to enable
the battery to be changed without losing the contents of the memory.
The instructions below are for replacing the battery with the help of battery adapter 442
460--880.
S
S
S
S
S
cpro1de5
Start by measuring the battery voltage to see if replacement is required.
Remove the CPU board from the rack and measure the battery voltage. The battery
must be replaced if its voltage is less than 2.6V.
Turn the switch on the battery adapter to the position marked SMP--E14--A31.
Check the battery voltage in the adapter before connecting it to the CPU board.
Measure the voltage between C2 (--) and C17 (+).
The voltage must be between 2.8V and 4.8V.
Connect the adapter to the CPU board.
Unsolder the old battery and solder the new one into position.
-- 57 --
Following these instructions will ensure that the contents of the memory remain unchanged.
The battery can also be changed without using the battery adapter, but stored welding
programs in the memory will be lost.
If this is unavoidable, print out the welding programs that need to be kept before replacing the battery.
Remove the circuit board from the board rack.
Place the circuit board with its solder side on a sheet of insulating material..
Remove the insulator sleeve from the battery pole that is not soldered in.
Solder the battery pole to the terminal post.
Replace the circuit board in the board rack.
NB: it is very important that the battery is inserted right way round and in the original position.
Check that all circuit boards are pushed fully home in the board rack.
Refit the side panel.
S
S
S
S
S
S
S
BATTERY ADAPTER
442 460--880
cpro1p34
ORDERING SPARE PARTS
Order spare parts through your nearest ESAB--representative. See the next--to--last page in
this manual.
When ordering, please always state:
1.
2.
3.
4.
Machine type: PROTIG 315 INVERTER.
Machine serial number.
The name of the spare parts, as shown in the spare parts list.
The order number of the parts, as shown in the spare parts list.
This saves time and ensures that the correct parts are supplied.
cpro1de5
-- 58 --
FAULT CODES
See the chapter entitled ’Fault Codes’ in the programming manual (order no. 442 446--004).
The fault codes relate to:
S
S
S
Programming errors.
Current limits and tachometer signals for welding tools and wire feed units.
Gas and arc indication.
Static characteristic
apa2dp16
.....= Standardised load voltage characteristic
Efficiency / Power factor
apa2dp17
.....= Standardised load voltage characteristic
cpro1de5
-- 59 --
ASSEMBLY INSTRUCTIONS
Trolley
apa2ap01
cpro1de5
-- 60 --
Control unit
apa2ap02
cpro1de5
-- 61 --
DIMENSIONS
apa2mp01
cpro1de5
-- 62 --
SPARE PARTS LIST, PROTIG 315
cpro1p33
Spare parts list -- Reservdelsförteckning -- Ersatzteilverzeichnis -- Liste de pièces détachées
Please order spare parts through the nearest ESAB agency as shown in the list on the back cover. Give details of the type of
unit, serial number, part names and ordering numbers as shown in the spare parts list.
Reservdelar beställs genom närmaste ESAB--representant, se sista sidan. Vid beställning var vänlig uppge typ and tillverkningsnummer samt benämningar och beställningsnummer enligt reservdelsförteckningen.
Die Ersatzteile können bei der nächsten ESAB--Vertretung bestellt werden, siehe letzte Seite. Bitte geben Sie Typenbezeichnung und Herstellungsnummer sowie Bezeichnungen und Bestellnummern laut Ersatzteilverzeichnis an.
Au dos de la brochure, vous trouverez l’adresse du représentant ESAB le plus proche. Prière de lui adresser votre commande, après avoir pris le soin de mentionner le type et le numéro de série de l’unité ainsi que le numéro de commande et la
désignation conformément á la liste de piéces détachées.
cpro1de5
-- 63 --
Spare parts list -- Reservdelsförteckning -- Ersatzteilverzeichnis -- Liste de détachées
ProTig 315
Item
no
Qty
C = component designation in the circuit diagram
Ordering no.
Denomination
442 079--880
TIG welding equipment programmable
Programming unit
Power unit
Rear panel
Front panel
Electronic unit
1
2
3
4
1
1
1
1
5
1
6
1
466 600--880
7
1
369 398--882
8
1
334 495--001
cpro1se1
442 137--880
Notes
optional equipment
Trolley
Cooling unit
Portable computer
Not shown in the picture
-- 64 --
C
cpro1p26
cpro1se1
-- 65 --
FRONT PANEL
C = component designation in the circuit diagram
Item
no.
Qty
Ordering no.
101
1
442 088--001
Side cover
102
1
366 295--004
Switch
103
1
192 576--004
Indicating lamp
White 42V
K38.1
104
1
192 576--006
Indicating lamp
White 220V
K38.3
105
1
366 295--006
Switch
K6.2
106
2
367 258--880
TIG central connector
K97
107
1
1
157 443--880
193 103--401
D--type connectors
Clamp locking
15--pole
A36
108
1
1
334 505--881
193 103--401
D--type connectors
Clamp locking
37--pole
A38
109
1
366 532--001
Snap--on coupling
110
1
366 532--001
Snap--on coupling
111
1
193 484--006
Socket
32--pole
A35
112
1
193 005--002
LED
Green
A42
113
2
156 868--880
Welding current connector
OKC
K13
114
1
442 092--880
Front panel
115
1
442 089--001
Side cover
Left
116
1
193 666--032
LED
Yellow
K38.2
117
2
368 557--002
Handle
119
1
442 453--001
Holder
120
1
5385 009--02
Sleeve socket
2--pole
K24
cpro1se1
Denomination
Notes
C
K6.1
-- 66 --
cpro1p27
cpro1se1
-- 67 --
REAR PANEL
C = component designation in the circuit diagram
Item
no
Qty
Ordering no.
201
1
369 384--001
Lifting eye bolt
202
1
369 033--001
Sealing sleeve
204
1
442 097--001
Rear panel
205
1
332 966--880
Pin plug
6--pole
A49
206
1
332 762--880
Pin plug
7--pole
A47
207
1
1
193 026--001
155 207--022
Socket
Cover cap
24--pole
A48
208
1
441 285--002
Socket
2--pole
K82
210
1
369 383--001
Lifting eye bolt
cpro1se1
Denomination
Notes
C
Rubber
-- 68 --
cpro1p28
cpro1se1
-- 69 --
C = component designation in the circuit diagram
Item
no
Qty
Ordering no.
301
302
303
304
305
306
307
1
2
2
5
2
1
1
481 672--886
5679 001--32
5679 001--11
193 701--001
408 594--004
367 437--001
368 622--001
192 526--002
Circuit board
Fuse
Fuse
Fuse holder
Grommet
Caution sign
Cover
Sealing strip
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
1
1
1
1
1
1
1
2
1
1
1
2
1
1
1
1
1
468 477--001
193 586--101
369 378--001
369 396--001
481 413--880
191 409--033
366 575--001
321 220--002
193 045--003
193 661--110
366 694--001
193 316--008
368 639--001
442 099--880
369 382--001
369 381--001
5679 001--15
Mounting plate
Circuit breaker
Intermediate plate
Control transformer
Suppression board
Insulating washer
Grill
Grommet
Connection block
Capacitor
Electric conductor
Rectifier bridge
Insulating plate
Base plate
Mount
Grill plate
Fuse
325
1
1
1
1
1
1
1
2
442 244--881
442 281--881
193 045--006
193 356--201
193 260--150
193 260--155
192 784--006
192 784--012
190 209--113
191 094--142
367 268--002
468 774--880
192 579--111
468 773--001
468 775--001
Cable stem (mains)
Cable set
Connection block
Contactor
Contact device
Contact device
Sleeve plug
Sleeve plug
Hose
Resistor
HF device
Rectifier filter
Resistor
Mount
Insulation
326
327
328
329
330
331
cpro1se1
1
1
1
3
1
1
Denomination
Notes
1A slow blow
2A slow blow
C
K70.1
K21.4--5
K21.1--3
with text
5A slow blow
K21.6
K52
K96
50mF 600V
K88
K87
6,3A slow blow
K80
Contains the 8 items listed below.
7--pole
K50.1
K8
2--pole
7--pole
4--pole
9--pole
To be ordered /meter
0,1mF 1000V
-- 70 --
K74
K27.1--5,7
cpro1se1
-- 71 --
cpro1p24
C = component designation in the circuit diagram
Item
no
Qty
Ordering no.
401
2
365 539--001
Fan
402
1
442 020--001
Circuit board rack bracket
403
4
192 927--102
Spacer
404
1
190 943--101
Flat pin sleeve
405
1
369 387--001
Insulating cover
406
1
369 973--880
Power unit complete
407
1
442 246--880
HF--unit
408
2
320 805--880
Capacitor
0,1←F 1000V
409
1
190 468--201
Profile moulding
To be ordered /meter
410
3
192 230--109
Plug
411
1
191 409--031
Insulating washer
412
1
193 045--007
Connection block
413
1
193 298--101
Contactor rail
414
1
369 972--001
Insulation
415
1
368 640--001
Insulating plate
1
1
1
2
1
1
2
1
1
1
366 598--880
481 158--880
162 781--002
193 127--297
320 760--001
366 580--880
193 189--370
2643 004--04
2151 000--18
191 445--101
Mains connection complete
Suppressor board
Connection block
Screw
Sign
Mounting plate
Screw
Washer
Washer BRB
Earth symbol
417
1
369 388--001
Insulating plate
418
1
192 244--102
Solenoid valve
419
1
319 471--001
Supplementary transformer
420
1
319 529--001
Caution sign
421
1
368 858--001
Mounting base
422
2
0409 536--01
Cable tie
423
1
369 389--891
Cable set
1
1
1
1
1
2
1
1
1
1
442 244--880
442 281--880
192 753--003
193 260--150
193 260--157
192 784--002
192 784--014
192 784--012
193 045--007
193 260--153
193 260--159
Cable stem
Cable set
Connection block
Contact device
Contact device
Sleeve plug
Sleeve plug
Sleeve plug
Connection block
Contact device
Contact device
416
cpro1se1
Denomination
Notes
C
K28.1--2
K75
K27.5,7
8--pole
Contains the 9 items listed below.
42V~
K73
K53
with text
Controle
3--pole
2--pole
9--pole
2--pole
12--pole
9--pole
8--pole
11--pole
-- 72 --
K69.1
C = component designation in the circuit diagram
Item
no
cpro1se1
Qty
Ordering no.
1
1
1
1
1
1
1
1
1
193 260--052
192 753--003
192 784--005
193 208--001
5679 001--06
5385 009--02
192 833--044
442 560--004
442 561--001
Denomination
Contact device
Connection block
Pin plug
Cable fuse holder
Fuse
Sleeve socket
Capacitor
Choke coil
Cable fuse holder
Notes
C
4--pole
3--pole
4--pole
2--pole
500 mH
K12
-- 73 -cpro1p31
C = component designation in the circuit diagram
Item
no
Qty
501
1
442 191--880
Circuit board rack
502
1
341 323--884
Front suppressor board
503
1
157 360--001
Circuit board holder
504
1
341 795--882
Rear suppressor board
A17
505
1
157 045--001
Power supply unit
A21
506
1
442 132--880
Mounting plate
507
1
341 079--880
Counter board
A01
508
1
481 150--882
CPU board
A03
509
1
341 809--882
I/O board
A06
510
1
341 161--880
Adapter board
511
3
341 046--880
Motor board
A08--10
512
1
341 938--880
Motor board (AVC)
A11
513
1
341 087--882
Current reference board
A12
514
1
481 381--880
Relay board
A13
515
1
341 169--880
Front board
516
1
334 505--881
Twin feeder
517
1
157 443--880
Twin feeder
518
1
192 911--108
Tube
519
1
191 765--105
Tube coupling
520
1
193 633--001
Fitting
521
1
481 739--880
Circuit board
cpro1se1
Ordering no.
Denomination
Notes
C
A16
Counter board
A18
-- 74 --
cpro1p25
cpro1se1
-- 75 --
C = component designation in the circuit diagram
Item
no
Qty
Ordering no.
Denomination
Notes
1
369 973--880
Power unit, complete
601
1
366 577--881
Transformer complete
K1
602
12
320 759--003
Diode
K2.1, K2.2
603
2
467 864--002
Thermal switch
K31
604
2
605
2
606
2
607
1
320 805--882
Capacitor
K27.3
608
2
367 183--880
RC--filter
K93.1
609
2
367 063--880
Inductor with mount
K12
610
1
367 133--881
Resistor
K54
611
1
366 046--881
Shunt
612
1
368 639--001
Isolating plate
613
1
368 640--001
Isolating plate
614
1
369 387--001
Isolating hood
615
1
369 388--001
Isolating plate
Switch unit
365 539--001
C
Contained in item 620
Fan
K28.1, K28.2
Switch unit
Contained in item 620
120mV / 315A
K18
SPARE PARTS SETS
Item
no
Qty
Ordering no.
Denomination
620
2
468 515--890
Switch units, complete
cpro1se1
Notes
Contains item 604 and 606
-- 76 --
C
cpro1se1
-- 77 --
cpro1p38
Item
no
Qty
Ordering no.
Denomination
1
369 398--882
Cooling unit, complete
701
1
368 568--001
Water inlet
702
1
369 241--001
Lid
703
1
466 898--001
Spacer
704
1
369 374--001
Base plate
705
10
190 484--003
Hose clamp
706
1
467 865--001
Water tank
707
1
369 233--001
Pump
708
4
369 234--001
Mounting clamp
709
2
369 235--001
Retaining strap
710
1
369 239--881
Fan
711
1
368 556--001
Cooler
712
1
369 979--001
Front panel
713
4
320 029--001
Earthing strip
714
1
191 954--101
Hose
0,5 m. To be ordered / meter
715
3
321 030--001
Rubber hose
1,0 m. To be ordered / meter
716
4
319 455--002
Rubber foot
717
1
366 598--881
Mains connection, complete
718
1
442 195--001
Rear panel
192 526--002
Sealing strip
719
720
3
192 230--110
Plug
721
2
146 106--001
Hose nipple
722
2
366 532--001
Quick connector
723
2
366 531--001
Water connection
724
1
369 392--001
Cover plate
725
1
442 071--001
Auto--transformer
726
1
319 529--001
Caution sign
727
1
369 391--887
Cable stem
cpro1se1
Notes
C
Contains item 701 to 727.
K98
0,842 m. To be ordered / meter
K3
with text
-- 78 --
cpro1p29
cpro1se1
-- 79 --
C = component designation in the circuit diagram
Item
no
Qty
Ordering no.
1
442 137--880
Control box, complete
801
1
442 133--001
Casing
802
1
481 676--880
Circuit board
803
1
442 136--001
Side panel, right
804
1
369 130--001
Side panel, left
805
1
442 134--001
Display window
806
22
442 135--001
LED cover
807
1
442 095--880
Set of pushbuttons
808
2
369 135--001
Rubber support
809
1
442 241--880
Clamp
810
4
2121 107--20
Screw
811
4
2151 000--11
Washer
812
1
2121 088--36
Screw
813
4
2195 014--06
Washer
814
1
442 239--880
Cable set
815
1
193 368--001
Key switch
816
1
193 307--105
Sleeve
cpro1se1
Denomination
Notes
C
Contains item 801 to 816.
E03
M4 x 8
-- 80 --
cpro1p30
cpro1se1
-- 81 --
Group H.Q. International directory of subsidiary and associated companies.
Agency network, by countries.
Group Headquarters
GREAT BRITAIN
Esab Group (UK) Ltd
Waltham Cross
Tel: +44 1992 76 85 15
Fax: +44 1992 71 58 03
SWEDEN
Esab AB
Gothenburg
Tel: +46 31 50 90 00
Fax: +46 31 50 92 61
ESAB Automation Ltd
Andover
Tel: +44 1264 33 22 33
Fax: +44 1264 33 20 74
ESAB International AB
Gothenburg
Tel: +46 31 50 90 00
Fax: +46 31 50 93 60
HUNGARY
ESAB Kft
Budapest
Tel: +36 1 20 44 182
Fax: +36 1 20 44 186
Nordic Countries
DENMARK
ESAB A/S
Köpenhavn--Valby
Tel: +45 36 30 01 11
Fax: +45 36 30 40 03
ITALY
Esab Saldatura S.p.A.
Mesero (Mi)
Tel: +39 2 97 96 81
Fax: +39 2 97 28 91 81
FINLAND
Esab Oy
Helsinki
Tel: +358 9 547 761
Fax: +358 9 547 77 71
THE NETHERLANDS
Esab Nederland B.V.
Utrecht
Tel: +31 30 248 59 22
Fax: +31 30 248 52 60
NORWAY
AS Esab
Larvik
Tel: +47 33 12 10 00
Fax: +47 33 11 52 03
POLAND
ESAB
Oddzial w Polsce
Tel: +48 22 813 99 63
Fax: +48 22 813 98 81
SWEDEN
Esab Sverige AB
Gothenburg
Tel: +46 31 50 95 00
Fax: +46 31 50 92 22
Europe excl. Nordic Countries
AUSTRIA
Esab Ges.m.b.H
Vienna--Liesing
Tel: +43 1 888 25 11
Fax: +43 1 888 25 11 85
BELGIUM
S.A. Esab N.V.
Brussels
Tel: +32 2 745 11 00
Fax: +32 2 726 80 05
THE CZECH REPUBLIC
ESAB s.r.o.
Tel: +420 2 819 40 885
Fax: +420 2 819 40 120
FRANCE
Esab France S.A.
Cergy Pontoise Cedex
Tel: +33 1 30 75 55 00
Fax: +33 1 30 75 55 24
GERMANY
ESAB GmbH
Solingen
Tel: +49 212 298 0
Fax: +49 212 298 204
ESAB--Hancock GmbH
Karben
Tel: +49 6039 400
Fax: +49 6039 40 301
KEBE--Ersatzteile GmbH
Rosbach
Tel: +49 6007 500
Fax: +49 6007 1216
PORTUGAL
ESAB Lda
Lisbon Codex
Tel: +351 1 837 1527
Fax: +351 1 859 1277
SLOVAKIA
ESAB Slovakia s.r.o.
Bratislava
Tel: +421 7 429 23 71
Fax: +421 7 288 741
SPAIN
Esab Ibérica S.A.
Alcobendas (Madrid)
Tel: +34 91 661 55 80
Fax: +34 91 661 23 13
SWITZERLAND
ESAB AG
Dietikon
Tel: +41 1 741 25 25
Fax: +41 1 740 30 55
North and South America
BRAZIL
ESAB S.A.
Contagem--MG
Tel: +55 31 333 43 33
Fax: +55 31 333 50 00
CANADA
Esab Group Canada
Missisauga, Ontario
Tel: +1 905 670 02 20
Fax: +1 905 670 48 79
Far East
AUSTRALIA
ESAB Australia Pty Ltd
Ermington
Tel: +61 2 9647 1232
Fax: +61 2 9748 1685
INDONESIA
P.T. Esabindo Pratama
Jakarta
Tel: +62 21 460 01 88
Fax: +62 21 461 29 29
MALAYSIA
ESAB (Malaysia) Snd Bhd
Petaling Jaya
Tel: +60 3 703 36 51
Fax: +60 3 703 35 52
SINGAPORE
ESAB Singapore PTE Ltd
Singapore
Tel: +65 861 43 22
Fax: +65 861 31 95
Esab Asia/Pacific Pte Ltd.
Singapore
Tel: +65 861 74 42
Fax: +65 863 08 39
THAILAND
ESAB (Thailand) Ltd
Bangkok
Tel: +66 2 393 60 62
Fax: +66 2 748 71 11
U.A.E.
ESAB Middle East
Dubai
Tel: +971 4 38 88 29
Fax: +971 4 38 87 29
Associated companies
INDIA
ESAB India Ltd
Calcutta
Tel: +91 33 478 45 17
Fax: +91 33 468 18 80
SWEDEN
Gas Control Equipment AB
Malmö
Tel: +46 40 38 83 00
Fax: +46 40 38 83 30
Representative offices
ALGERIA
ESAB Bureau de Liaison
Alger
Tel: +213 2 67 24 93
Fax: +213 2 68 32 90
CHINA
ESAB Representative Office
Beijing
Tel: +86 10 6410 6493
Fax: +86 10 6410 6530
EGYPT
ESAB Egypt
Dokki--Cairo
Tel: +20 2 390 96 69
Fax: +20 2 393 32 13
IRAN
ESAB International AB
Teheran
Tel: +98 21 884 39 14
Fax: +98 21 884 13 36
ROMANIA
ESAB Representative Office
Bucharest
Tel: +40 1 211 75 02
RUSSIA-- CIS
ESAB Representative Office
Moscow
Tel: +7 095 9379 820
Fax: +7 095 2468 906
Agents
EUROPE
Cyprus, Greece, Malta
AFRICA
Angola, Cameron, Ethiopia,
Gabon, Ghana, Kenya, Israel,
Liberia, Morocco, Mocambique,
Nigeria, Senegal, South Africa,
Tanzania, Togo, Tunisia,
Zambia, Zimbabwe
ASIA
Bahrain, Hongkong, Japan,
Jordania, Korea, Kuwait,
Lebanon, New Guinea, Oman,
Pakistan, The Philippines,
Quatar, Saudi Arabia,
Sri Lanka, Syria, Taiwan,
Turkey, Vietnam, Yemen
LATIN AMERICA
Argentina, Bolivia, Chile,
Colombia, Costa Rica, Curacao,
Equador, El Salvador,
Guatemala, Honduras, Jamaica,
Paraguay, Peru, Trinidad,
Uruguay, Venezuela
BULGARIA
INTESA
Sofia
Tel: +359 2 980 17 15
Fax: +359 2 980 08 42
USA
Esab Welding & Cutting Products
Florence, SC
Tel: +1 803 669 44 11
Fax: +1 803 664 42 58
Esab Welding Equipment AB
S-- 695 81 LAXÅ
SWEDEN
Phone +46 584 81 000
Fax +46 584 123 08
Tgm esablax
Telex 73108 esab s
Member of The Esab Group
980430
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