REHM FOCUS.ARC P 300, FOCUS.ARC P 350, FOCUS.ARC P 250, FOCUS.ARC P 400 FOCUS.ARC P 450 Operating Instructions Manual
GB
OPERATING INSTRUCTIONS
MIG/MAG impulse welding systems
FOCUS.ARC P 250 - 450
Operating instructions
Operating instructions
MIG/MAG impulse welding systems
FOCUS.ARC P 250
FOCUS.ARC P 300
FOCUS.ARC P 350
FOCUS.ARC P 400
FOCUS.ARC P 450
REHM GmbH u. Co. KG
Ottostr. 2
D-73066 Uhingen
Telephone: 07161/3007-0
Telefax: 07161/3007-20
E-Mail: rehm@rehm-online.de
Internet: http://www.rehm-online.de
Document No.: 730 2600
Date of issue: 18/02/2019
© REHM GmbH u. Co. KG, Uhingen, Germany 2018
The content of this description is the property of REHM GmbH u. Co. KG
The copying and distribution of this document, its use and communication of its
contents are strictly prohibited unless expressly authorized.
Offenders are liable to damages. All rights reserved in the event of patent, utility
model or design patent.
The manufacture based on these documents is not allowed.
Subject to change.
Name
Type
Manufacturer
List of contents
3
List of contents
Product identification 2
1 INTRODUCTION .............................................................................................................................. 6
1.1 Foreword ......................................................................................................................................... 6
1.2 General description ....................................................................................................................... 7
1.2.1 The principle of the inert gas metal welding process ....................................................................... 8
1.2.2 Intended use .................................................................................................................................... 8
1.3 Symbols used ................................................................................................................................. 9
2 SAFETY INSTRUCTIONS .............................................................................................................10
2.1 Warning symbols in these operating instructions ...................................................................10
2.2 Warning symbols on the system ................................................................................................10
2.3 Notes and requirements ..............................................................................................................11
3 UNIT DESCRIPTION .....................................................................................................................13
4 FUNCTIONAL DESCRIPTION ......................................................................................................18
4.1 Overview of the operating elements ..........................................................................................18
4.2 Control panel description............................................................................................................19
4.2.1 Operating elements ........................................................................................................................19
4.2.2 Operating elements ........................................................................................................................20
4.3 Switching on .................................................................................................................................23
4.4 Peculiarities of the operating panel ...........................................................................................23
5 CORNER MENU FUNCTIONS ......................................................................................................24
5.1 Corner menu welding processes (top left) ................................................................................24
5.1.1 Conventional MIG/MAG(MSG) welding .........................................................................................24
5.2 Corner menu operating mode (top right)...................................................................................24
5.2.1 2 cycle operating mode ..................................................................................................................25
5.2.2 2 cycle operating mode with slope-down (Slope) ..........................................................................26
5.2.3 4 cycle operating mode ..................................................................................................................27
5.2.4 4 cycle operating mode with slope-down (Slope) ..........................................................................28
5.2.5 Spot ................................................................................................................................................29
5.2.6 Spot with slope-down (Slope) ........................................................................................................30
5.2.7 2 cycle interval ...............................................................................................................................31
5.2.8 2 cycle interval with slope-down (Slope) ........................................................................................32
5.3 Corner menu characteristic curve ..............................................................................................33
5.4 Corner menu welding process ...................................................................................................33
5.4.1 Power Arc .......................................................................................................................................33
5.4.2 Power Puls II ..................................................................................................................................33
5.4.3 Focus Puls .....................................................................................................................................34
5.4.4 Root ................................................................................................................................................34
5.5 Display panel Welding current (A) .............................................................................................34
5.6 Display panel Voltage (V) ............................................................................................................34
5.7 Display panel Dynamic correction (SDI) ....................................................................................34
5.8 Display panel LBL correction .....................................................................................................35
List of contents
4
5.9 Display panel Material thickness ............................................................................................... 35
5.10 Display panel Wire feed speed .................................................................................................. 35
5.11 Characteristic curve info bar ..................................................................................................... 35
6. SUBMENUS .................................................................................................................................. 36
6.1 MSG parameters .......................................................................................................................... 36
6.1.1 Parameter settings ........................................................................................................................ 36
6.1.2 Setting the MSG welding parameters ........................................................................................... 36
6.1.3 Explanation of welding parameters ............................................................................................... 38
6.2 Language menu ........................................................................................................................... 40
6.3 Saving and loading jobs ............................................................................................................. 41
6.3.1 Save job......................................................................................................................................... 41
6.3.2 Load job ......................................................................................................................................... 43
6.3.3 Delete job ...................................................................................................................................... 44
6.3.4 Rename job ................................................................................................................................... 45
6.4 Setup submenu ........................................................................................................................... 46
7 CONTROL LAMPS ....................................................................................................................... 48
8 OTHER FUNCTIONS .................................................................................................................... 49
8.1 Threading ..................................................................................................................................... 49
8.2 Gas test ........................................................................................................................................ 49
8.3 Water recirculation cooling ........................................................................................................ 50
8.4 Temperature monitoring of the power units............................................................................. 50
8.5 External cooling of the power units .......................................................................................... 50
8.6 Fan and water pump control ...................................................................................................... 50
9 ACCESSORIES AND OPTIONS .................................................................................................. 51
9.1 Unit versions, accessories and options ................................................................................... 51
10 COMMISSIONING ........................................................................................................................ 55
10.1 Safety instructions ...................................................................................................................... 55
10.2 Working under elevated electrical risk in accordance with the regulations ......................... 55
10.3 Positioning the welding unit ...................................................................................................... 55
10.4 Connecting the welding unit ...................................................................................................... 56
10.5 Cooling the welding unit............................................................................................................. 56
10.6 Water cooling for MIG/MAG welding torches ........................................................................... 56
10.7 Connecting the welding cables ................................................................................................. 56
10.8 Connecting the torch .................................................................................................................. 56
10.9 Inserting the wire ........................................................................................................................ 57
11 OPERATION ................................................................................................................................. 58
11.1 Safety instructions ...................................................................................................................... 58
11.2 Checks before switching on ...................................................................................................... 58
11.3 Connecting the grounding cable ............................................................................................... 58
11.4 Practical instructions for use ..................................................................................................... 58
List of contents
5
12 FAULT............................................................................................................................................61
12.1 Safety instructions .......................................................................................................................61
12.2 Table of faults ...............................................................................................................................61
12.3 Error messages ............................................................................................................................63
13 MAINTENANCE AND REPAIR .....................................................................................................64
13.1 Safety instructions .......................................................................................................................64
13.2 Maintenance table ........................................................................................................................65
13.3 Cleaning the inside of the unit ....................................................................................................65
13.4 Cooling water check ....................................................................................................................66
13.5 Proper disposal ............................................................................................................................66
14 CIRCUIT DIAGRAMS ....................................................................................................................67
14.1 Characteristic curve current source ..........................................................................................70
15 COMPONENTS AND SPARE PARTS ..........................................................................................72
15.1 Characteristic curve wire feeding unit .......................................................................................72
16 TECHNICAL DATA .......................................................................................................................77
17 INDEX ............................................................................................................................................78
Introduction
6
1 Introduction
1.1 Foreword
Dear Customer,
You have purchased a REHM inert gas welding system, a renowned German
brand name.
We thank you for the confidence you have placed in our quality products.
Only components of the highest quality are used in FOCUS.ARC P welding systems.
To enable a long service life even under the toughest conditions all REHM
equipment is manufactured using only parts that comply with our strict quality
demands.
The FOCUS.ARC P has been developed and designed according to the generally
accepted rules of technology and safe operation. All relevant legal regulations have
been observed and complied with. Conformity is declared and is marked with the CE
symbol.
REHM welding systems are manufactured in Germany and therefore bear the "Made
in Germany" quality label.
REHM strives to immediately take advantage of technical progress and reserves the
right to adapt the design of the welding equipment at any time to the latest technical
requirements.
Introduction
7
1.2 General description
Figure 1: FOCUS.ARC P450 WS
(Figure does not illustrate standard equipment)
Introduction
8
1.2.1 The principle of the inert gas metal welding process
With the inert gas metal welding process an electric arc burns between a melting
wire electrode and the workpiece. Argon, carbon dioxide (CO2) or a mixture of these
or other inert gasses are used.
The positive pole usually flows from the current contact tips to the wire electrode and
the negative pole is connected to the workpiece. An electric arc forms between the
wire electrode and the workpiece that melts both the wire electrode and the
workpiece. The wire electrode is therefore the conductor for the arc and weld filler
material.
The wire electrode and the weld pool are protected against the influence of ambient
air by the inert gas, which flows continuously from the inert gas nozzle that is
arranged concentrically around the electrode.
1.2.2 Intended use
FOCUS.ARC P welding systems may only be used for MIG/MAG welding.
REHM welding units are designed for welding various different metallic materials
such as unalloyed and alloyed steels, stainless steels, aluminium and CuSi3.
Please also observe the special rules that apply to your applications.
REHM welding machines are designed for use in both hand-held and machineguided operation.
REHM welding machines are, except when this is expressly stated in writing by
REHM, only for sale to commercial / industrial users and are only intended to be
used by commercial / industrial users. The machines may only be operated by
persons who trained in the use and maintenance of welding equipment.
Welding power sources may not be installed in areas with increased electrical risk.
This manual contains rules and guidelines for the intended use of your system. Only
compliance with these guidelines shall be considered as proper use. Risks and
damages incurred due to any other use is the responsibility of the operator. Use
under special requirements may necessitate the observance of particular
regulations.
If in doubt, ask your competent safety officer or contact the REHM customer service
department.
The special instructions listed in the supplier documentation for intended use must
be observed.
National regulations also apply without restriction to the operation of the system.
Welding power sources may not be used to defrost pipes.
Intended use also includes compliance with the prescribed assembly, disassembly
and reassembly, commissioning, use, maintenance and disposal measures. Please
pay particular attention to the information in Section 2 Safety instructions and
Section 15.5 Proper disposal.
The system may only be operated under the aforementioned conditions. Any other
use is considered unintended use. The consequences of unintended use rests with
the operator. Welding power sources may not be used to defrost pipes.
Introduction
9
1.3 Symbols used
• Enumerations proceeded by a bullet point: General enumerations
Enumerations proceeded by a square: Work or maintenance steps that must be
performed in the order listed.
➔ Section 2.2, Warning symbols on the system
Cross section: here to Section 2.2, Warning symbols on the system
Bold text is used for emphasis
Note!
... indicates practical tips and other particularly useful information.
The safety symbols used in this manual: ➔ Section 2.1
Typographic
distinctions
Safety
symbols
Safety information
10
2 Safety instructions
2.1 Warning symbols in these operating
instructions
This or a symbol that more accurately specifies the risk can be found in all
of the safety instructions given in these operating instructions where there
is danger to life and limb.
One of the signal words below (Danger!, Warning!, Caution!) is used to
indicate the severity of the risk:
Danger! …warning of immediate danger.
Death or serious injury may result if the warning if not heeded.
Warning! ... of a potentially dangerous situation.
Death or serious injury may result if the warning is not heeded.
Caution! … warns of a potentially harmful situation.
Slight or minor injuries or property damage may result if the warning is not
heeded.
Important!
Notice of a potentially harmful situation. The product or an object in the
vicinity may be damaged if the warning is not heeded.
Materials that are hazardous to health or the environment.
Materials/operating materials that must be handled or disposed of in a
legally conformant way.
2.2 Warning symbols on the system
identify hazards and hazard sources on the system.
Danger!
Risk of electrical shock!
Non-observance mas result in death or injury.
Warnings and
symbols
Safety information
11
2.3 Notes and requirements
The system was developed and designed by the generally accepted rules of
technology.
Nevertheless, residual dangers to the life and limb of the operator or the risk of
damage to the system or other property may still arise in the use of the system.
Safety equipment must never be dismantled or put out of operation as this will
result in dangerous hazards and the intended use of the system is no longer
guaranteed. The dismantling of safety devices for equipping, repairing and
maintenance is described in detail. The safety devices must be refitted
immediately on completion of such work.
When using external aids and agents (for example, solvents for cleaning) the
user of the system is responsible for ensuring the safety of the unit.
All safety instructions and warnings and the nameplate on / near the system must
be kept visible and legible.
The occupational safety and health regulations serve as safety references. They
must be observed.
In addition to the safety instructions listed in this section, the safety instructions
contained in the current text must also be observed.
Beside the advice given in these operating instructions, the general safety and
accident prevention regulations (in Germany, among others UVV BGV A3, TRBS
2131 and BGR 500 Chapter 2:26 (previously VGB 15): "Welding, cutting and
allied processes" and particularly the conditions for arc welding and cutting
contained therein or the corresponding national regulations) must be observed.
Also observe the safety information signs on the factory floor of the operator.
REHM welding machines are, except when this is expressly stated in writing by
REHM, only for sale to commercial / industrial users and are only intended to be
used by commercial / industrial users.
The FOCUS.ARC P MIG/MAG gas welding equipment is designed in accordance
with EN 60974-1 Arc welding equipment - welding power sources for overvoltage
category III and pollution degree 3 and in accordance with EN 60974-10 Arc
welding equipment - electromagnetic compatibility (EMC) and may only be used
on mains supply systems which have a three-phase four-wire system with
earthed neutral conductor.
FOCUS.ARC P inert gas welding systems may only be used
• as intended
• in an absolutely perfect condition
Hazards of noncompliance
Safety information
Applications
Safety information
12
The FOCUS.ARC P MIG/MAG gas welding equipment has been subjected to a
safety test and acceptance. In the event of incorrect operation or misuse, there is
a danger to
• life and limb of the operator,
• the machine and other material assets of the operator
• the efficient work of the machine
All persons involved in the installation, commissioning, operation, maintenance
and repair of the machine must
• be appropriately qualified
• strictly observe these operating instructions.
Your safety is at stake!
FOCUS.ARC P MIG/MAG gas welding equipment should be operated only by
persons who are trained and instructed in the use and maintenance of welding
equipment. Only qualified, assigned and trained personnel may work on and with
the system.
The operator is responsible for third parties in the work area. The responsibility
for this machine must be precisely defined and adhered to. Unclear
responsibilities are a safety risk.
The operating company must
• make the operating instructions accessible to the operator and
• ensure that the operator has read and understood them.
Connect a lockable switch in front of the machine to prevent unauthorised
operation.
These operating instructions contain important information on how this unit can
be operated safely, properly and economically. A copy of the operating
instructions must be constantly at hand in a suitable place at the site of use of the
system. Before using the system be sure to read the information compiled in
these operating instructions. These include important instructions on use of the
equipment that enable the full technical advantages of the RHEM equipment to
be exploited. See also the information on repair and maintenance, operating
safety and functional reliability.
These operating instructions are not a substitute for the practical teaching by the
REHM service personnel.
Documentation for any additional operation that may be present must also be
observed.
Changes to the system or the mounting or incorporation of additional equipment
is not permitted. Doing so will invalidate any warranty and liability claims.
Third-party intervention and putting out of operation of safety devices invalidates
all warranty claims.
High power units can affect the mains voltage due to their high power
consumption. Therefore, connection restrictions, requirements for a maximum
permissible mains impedance or requirements for a minimum necessary
available power at the connection point to the general mains supply may exist for
certain unit types (see technical data). If this is the case, the user of a unit - after
consulting the power supplier if necessary - must ensure that the unit may be
connected.
Purpose of the
document
Changes to
the system
Requirements on
the mains supply
Qualification of the
operating
personnel
Dangerous nature
of this machine
Function description
13
3 Unit description
Figure 2: FOCUS.ARC P 450WS with case and water cooling unit
Front view (Figure does not illustrate standard equipment)
Function description
14
Figure 3: FOCUS.ARC P 300W, compact and water cooled
Front view (Figure does not illustrate standard equipment)
Function description
15
Figure 4: FOCUS.ARC P 450
Rear view (Figure does not illustrate standard equipment)
Function description
16
Figure 5: FOCUS.ARC P wire feed case
Function description
17
No.
Symbol
Function / description
1 Control panel - See "Description of controls"
2 Control panel push and rotary encoder
3 Welding torch connection (Euro connection)
4 Remote control socket (7 pin)
5 Connection coolant supply (Blue)
6 Connection coolant return (red)
7 Main switch for switching on/off the welding current source
8 Current socket "negative"
9 Current socket "positive"
10 Cooling air inlet
11 Inlet Filling Coolant Water cooling unit
12 Viewing window Stand Coolant Water cooling unit
13 Advanced trolley (option, non-standard)
14 Interface
15 Inert gas connection Welding torch
16 Power cable
17 Welding power sources
18 Water cooling unit (Option)
19 Cooling air outlet
20 Coil mandrel
21 Wire feeding unit
22 Gas test push button
23 Threading push button
Table 1 Equipment labelling on the front and back
Function description
18
4 Functional description
4.1 Overview of the operating elements
Figure 6: Operating element and main screen FOCUS.ARC P
Function description
19
4.2 Control panel description
4.2.1 Operating elements
Controls
Function
Fig. 7 Main screen
Main screen
Operation via rotary encoder with pushknob and buttons for menu selection in
the 4 corners of the screen
Fig. 8 Function buttons
Function buttons (from left to right)
Button
Submenu
“Submenu”
List of all
submenus
Button
Main screen
“Home”
Jumps directly
to the first
screen page
Button
Back
“Back”
Always jumps
back one level
Fig. 9 Corner function buttons
Corner menu selection buttons
Direct menu buttons for the selection
menus located in the 4 screen corners;
arranged around the rotary encoder.
Fig. 10 Rotary encoder with push-
knob
Rotary encoder with push-knob
Moves the pointer (cursor) on the
screen clockwise or counter clockwise.
Positions reached are highlighted in
colour and are activated by pressing
the rotary encoder knob.
Function description
20
4.2.2 Operating elements
Figure 11: Screen functions
No.
Symbols
Description / function
BF1 Corner menu welding processes
MSG welding
BF2 Corner menu operating modes
2 cycle
2 cycle with slope-down
4 cycle
4 cycle with slope-down
Spot
Spot with slope-down
Interval
Interval with slope-down
1 2 4 5 6 7 8 9 3
11
10
Function description
21
No.
Symbols
Description / function
BF3
Corner menu characteristic curve
Material
Wire diameter
Gas
process
BF4
Corner menu welding process
MSG Normal Power Arc
Power Puls II
Focus.Puls
Root
BF5
Display panel Welding current (A)
BF6
Display panel Voltage (V)
BF7
Display panel Material thickness
(mm)
BF8
Display panel Wire feed speed
(m/min)
BF9
Display panel SDI
BF10
Display panel LBL (Arc length)
BF11
Characteristic curve info bar
Table 2 Operating elements main screen
Function description
22
No.
Symbols
Description / function
BF12
Sub menu buttons
BF13
MSG parameters
BF14
Language
BF15
Function Assist (not available at
present)
BF16
Function Job Memory (Program)
BF17
Setup (Settings)
BF18
Back button “Home” and “Back”
BF19
Fault message
BF20
Links in the characteristic curve info
bar
Display Operation and excess
temperature
Table 3 Other control functions and submenus
Function description
23
4.3 Switching on
The FOCUS.ARC P welding system is started with the mains switch. The screen
shows the Rehm logo and the unit type for approximately 10 seconds. The
display then switches to the main screen [Fig. 7 Main screen]. The last active
welding parameters are set. The unit is then ready for operation.
4.4 Peculiarities of the operating panel
The processor control provides active support to facilitate faster and easier
operation:
All set parameters are saved when the unit is switched off. When the unit is
switched back on the stored parameters are automatically activated. An arc must
be struck for any changes to the parameters to be saved when the unit is
switched off.
The currently set parameters and settings are always displayed.
If the rotary encoder [Fig. 10] or button is not actuated for 20 seconds, then the
unit returns automatically to the main menu. The basic state therefore always
displays the welding current and the same starting position when operating.
Note! Due to software updates or equipment updates, functions may be available
on your FOCUS.ARC P that are not described in these operating instructions or
that are not included in your FOCUS.ARC P.
Function description
24
5 Corner menu functions
5.1 Corner menu welding processes (top left)
The corner menu [BF1] is used to select the welding processes
• MIG/MAG (MSG inert gas metal welding)
Turning and pressing the rotary encoder [Fig. 10] selects and confirms the
process. Pressing the button [BF17] "Back or "Rehm" returns to the main screen
[Fig. 7].
5.1.1 Conventional MIG/MAG(MSG) welding
With continuous MSG welding, very different material transitions and also
different types of arc occur depending on the selected arc power and the inert
gas used, see also Section 5.4 (welding process).
5.2 Corner menu operating mode (top right)
The menu Operating modes [BF2] is activated by pressing the button at the top
right of the keypad Fig. 10 This allows the selection of the operating modes
1. 2 cycle
2. 2 cycle with slope-down (Slope)
3. 4 cycle
4. 4 cycle with slope-down (Slope)
5. Spot
6. Spot with slope-down (Slope)
7. 2 cycle interval
8. 2 cycle interval with slope-down (Slope)
.
Function description
25
Hotstart
current
t (s)
Current
Hotstart
Time
Welding
Hotstart
Slope
5.2.1 2 cycle operating mode
The 2 cycle mode is recommended for fast, controlled tacking and manual spot
welding.
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flows with the set Hotstart value
After the Hotstart time has elapsed, the welding current is adjusted from
the Hotstart value to the welding current over the duration of the Hotstart
slope time
2. cycle Release the torch trigger
Wire feed stops
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
Figure 12: 2 cycle operating mode procedure with Hotstart
Function description
26
Hotstart
current
t (s)
Current
Hotstart
Time
Drop time
Welding
Slope-down
Hotstart
Slope
5.2.2 2 cycle operating mode with slope-down (Slope)
2 cycle operating mode procedure with slope-down (Slope):
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flows with the set Hotstart value
After the Hotstart time has expired, the welding current is changed from
the Hotstart value to the value set for welding over the duration of the
Hotstart slope time.
2. cycle Release the torch trigger
For the duration of the slope-down time, the welding current is reduced to
the value set for the slope-down current
The wire feed stops after the slope-down time has expired
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
Figure 13: 2 cycle operating mode procedure slope-down (Slope) with
Hotstart
Function description
27
Hotstart
current
t (s)
Current
Hotstart
Time
Welding
Hotstart
Slope
5.2.3 4 cycle operating mode
4 cycle welding is recommended for longer welding seams.
4 cycle operating mode procedure:
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flow is at the set Hotstart value set for welding
2. cycle Release the torch trigger
The welding current is changed from the Hotstart value to the value set
for welding
3. cycle Operate the torch trigger
Actuating the torch trigger has no effect
4. cycle Release the torch trigger
Wire feed stops
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
Figure 14: The 4 cycle operating mode procedure with Hotstart
Function description
28
Hotstart
current
t (s)
Current
Hotstart
Time
Drop time
Welding
Slope-down
Hotstart
Slope
5.2.4 4 cycle operating mode with slope-down (Slope)
4 cycle operating mode procedure with slope-down (Slope):
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on.
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flows with the set Hotstart value
2. cycle Release the torch trigger
The welding current is changed from the Hotstart value to the value set
for welding
3. cycle Operate the torch trigger
For the duration of the slope-down time, the welding current is reduced to
the value set for the slope-down current
4. cycle Release the torch trigger
Wire feed stops
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
Figure 15: 4 cycle operating mode procedure slope-down (Slope) with
Hotstart
Function description
29
t (s)
Current
Welding
Gas post-
flow time
Gas pre-
flow time
1.
2.
Spot time
5.2.5 Spot
The spot welding mode is recommended for welding with a fixed spot welding
time from 0.1 seconds.
The stationary welding process runs with a fixed spot welding time, unless the
trigger is released prematurely during the welding.
The program runs to the end after expiry of the set spot welding time or after
releasing the torch trigger during the welding.
Spot function procedure:
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flow is at the set value set for welding
The spot time (welding time) is running
The welding process is automatically terminated after the set spot time
has expired
Wire feed stops
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
2. cycle - Release the torch trigger
By releasing the torch trigger during the spot time, the welding process is
terminated immediately and the inert gas is switched off after the gas
post-flow time has expired.
Figure 16: Spot operating mode procedure
Function description
30
t (s)
Current
Welding
Slope-down
Gas post-
flow time
Gas pre-
flow time
1.
2.
Spot time
5.2.6 Spot with slope-down (Slope)
Spot operating mode procedure with slope-down (Slope):
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flow is at the set value set for welding
The spot time (welding time) is running
The welding process is automatically terminated after the set spot time
has expired
The wire feed stops after the slope-down time has expired
For the duration of the slope-down time, the welding current is reduced to
the value set for the slope-down current
The wire feed stops after the slope-down time has expired
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
2. cycle - Release the torch trigger
By releasing the torch trigger during the spot time, the welding process is
terminated immediately and the inert gas is switched off after the gas
post-flow time has expired.
Figure 17: Spot operating mode procedure with slope-down (Slope)
Function description
31
5.2.7 2 cycle interval
Interval welding is defined as spot welding with defined pause times. This makes
it possible to apply the thinnest filler materials.
Interval welding is only possible in the 2 cycle operating mode.
Welding in the interval welding mode is recommended for welding with a fixed
break welding time from 0.01 seconds.
In interval mode the pause time between the single intervals can be adjusted and
the cooling of the base material guaranteed, which means less warpage.
2 cycle interval operating mode procedure:
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flow is at the set value set for welding
The welding time is running
The welding process is automatically terminated after the set welding
time has expired
Wire feed stops
Freeband and freeband control are executed
The inert gas continues to flow
The pause time is running
After the pause time has expired, the welding process is restarted and
the previously described procedure is repeated.
2. cycle Release the torch trigger
Wire feed stops
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
Figure 18: 2 cycle interval operating mode procedure
t (s)
Current
Welding
Gas post-
flow time
Gas pre-
flow time
1.
2.
Welding
time
Function description
32
t (s)
Current
Welding
Gas post-
flow time
Gas pre-
flow time
1.
2.
Welding
time
5.2.8 2 cycle interval with slope-down (Slope)
2 cycle interval operating mode procedure with slope-down (Slope):
1. cycle Operate the torch trigger
The inert gas solenoid valve opens
After the set gas pre-flow time has expired the power unit is switched on
Welding voltage on
Wire feed runs at the initial wire feed speed
Arc is ignited after the welding wire contacts the workpiece
The feed switches to the set wire feed speed of the welding process
The welding current flow is at the set value set for welding
The welding time is running
After the set welding time has expired, the welding current is reduced to
the value set for the slope-down current over the duration of the slopedown time
Wire feed stops after the slope-down time has expired
Freeband and freeband control are executed
The inert gas continues to flow
The pause time is running
After the pause time has expired, the welding process is restarted and
the welding process runs again
2. cycle Release the torch trigger
For the duration of the slope-down time, the welding current is reduced to
the value set for the slope-down current
The wire feed stops after the slope-down time has expired
Freeband and freeband control are executed
The inert gas is switched off after the gas post-flow time has expired
Figure 19: 2 cycle interval operating mode procedure with slope-down (Slope)
Function description
33
5.3 Corner menu characteristic curve
The material, the wire diameter of the inserted welding wire, the gas and the
welding process can be selected and adjusted in the corner menu characteristic
curve [BF3]. The selected characteristic curve is displayed on the main screen
[BF11].
The FOCUS.ARC P provides various programmed characteristic curve data sets
for effective processing of different materials. The setting is always made by
turning and pressing the rotary encoder.
5.4 Corner menu welding process
Four additional welding processes are available for the MSG welding process.
These differ fundamentally in the material transition of the filler metal, the heat
input and the arc length.
The corner menu welding process [BF4] is used to select:
• MSG Normal Power Arc
• Power Puls II
• Focus Puls
• Root
5.4.1 Power Arc
The Power Arc welding process can also be selected for conventional MIG/MAG
welding.
• Conventional arc
• Optimised for the challenges of manual welding
• Safe handling
• Universal applications
• Robust, compensates for tolerances
• Flat weld seam geometry
• Standardised
5.4.2 Power Puls II
The Power Puls II welding process can also be selected for pulsing.
• Pulsed arc I/I controlled
• Frequency controlled bead detachment
• Perfect arc length
• Very good flow properties, flat weld seam geometry
• High arc energy, wide penetration.
• Optimised for the challenges of manual welding
• Safe handling
• Universal applications
• Robust, compensates for tolerances
• Particularly for CrNi and Al
Function description
34
5.4.3 Focus Puls
The Focus Puls welding process can also be selected for pulsing.
• Pulse arc U/I – controlled
• Voltage controlled bead detachment
• Perfect arc length
• Very good flow properties, flat weld seam geometry
• Low arc energy, deep penetration
• Optimised for the challenges of manual welding
• Safe handling
• Universal applications
• Robust, compensates for tolerances
• Particularly for Fe
5.4.4 Root
The Focus Root welding process can also be selected for root welding.
• Controlled short electric arc
• Energy-controlled bead detachment
• Perfect root coverage
• Easily modulated melt
• Reduced spatter
• Optimised arc energy for root welds
• Optimised for the challenges of manual welding
• Safe handling
• Universal applications
• Robust, compensates for tolerances
• Particularly for Fe
5.5 Display panel Welding current (A)
The required display panel "welding current" [BF5] can be selected by actuating
the rotary encoder. The welding current can be set by turning the rotary encoder.
The setpoint of the welding current is displayed in idle mode. The actual welding
current is displayed during welding.
5.6 Display panel Voltage (V)
The required "welding voltage" display panel [BF6] can be selected by actuating
the rotary encoder. The welding voltage can be set by turning the rotary encoder.
The setpoint of the welding voltage is displayed in idle mode. The actual welding
voltage is displayed during welding.
5.7 Display panel Dynamic correction (SDI)
The required "dynamic correction" display panel [BF9] can be selected by
actuating the rotary encoder. The dynamic correction can be continuously
adjusted by turning the rotary encoder.
Function description
35
5.8 Display panel LBL correction
The required "LBL correction" display panel [BF10] can be selected by actuating
the rotary encoder. The arc length can be continuously adjusted by turning the
rotary encoder.
5.9 Display panel Material thickness
The required "material thickness" display panel [BF7] can be selected by
actuating the rotary encoder. The material thickness of the base material to be
welded can be adjusted by turning the rotary encoder.
5.10 Display panel Wire feed speed
The required "wire feed speed" display panel [BF8] can be selected by actuating
the rotary encoder.
The selected wire feed speed is displayed and can be adjusted by turning and
pressing the rotary encoder.
5.11 Characteristic curve info bar
In the main screen, the current settings of material, gas, wire thickness, welding
process and the characteristic curve number are always displayed in the
characteristic curve info bar [BF11].
Function description
36
6. Submenus
Pressing the "Submenus" button [BF12] accesses a selection list (drop down list)
for the existing submenu.
The following menus can be selected from this list:
1. MSG parameters
2. Language selection
3. Function job memory (program)
4. Setup (Settings)
The submenus can be exited in 3 ways, with the return button [BF18]:
1. One level back by acknowledging a setting
2. One level back by pressing the "Back" button
3. Completely back to the main screen with the button "Main menu"
(Rehm).
6.1 MSG parameters
With the welding parameters, the user can individually set the most important
parameters for welding, such as: Gas pre-flow time, creep, etc.
Some welding parameters are only active when certain welding processes /
functions are selected.
6.1.1 Parameter settings
The selection and processing of the welding parameters is carried out for the
most part directly in the illustrated welding wave using the push and rotate
encoder [Fig. 10].
The representation and setting options depend on the unit type and the
preselected welding process.
The cursor can be moved clockwise or counter clockwise. The main display
always shows the value and function of the cursor position.
6.1.2 Setting the MSG welding parameters
For processing, a parameter field is activated by rotating the rotary encoder] to
the adjustable value field [parameter field] in the screen display and activating
this field by pressing the encoder. The background colour of the field changes (is
highlighted).
If the parameter field is active, the set value appears as a large display at the top
center of the screen (Fig. 21). In addition, a bar display appears in the status
field,Figure which shows the set value in the permissible value range.
The welding parameters are described in detail below in the order according to
the MSG parameter curve [BF13 ].
Function description
37
Figure 20: Submenu MSG parameters
Function description
38
6.1.3 Explanation of welding parameters
Gas pre-flow time
Time between switching on the gas valve and the start of the creep in. This
parameter depends on the selected characteristic curve, i.e. the gas pre-flow
time can be set individually for each characteristic curve.
Creep
Adjustment of the creep speed. This parameter depends on the selected
program, i.e. the creep speed can be set individually for each program.
Hotstart
Hotstart energy after ignition, based on the welding energy (100%). Depending
on the application, the value can be set lower (setting lower than 100) or higher
(setting higher than 100). This parameter depends on the selected characteristic
curve, i.e. the hot start value can be set individually for each characteristic curve.
Hotstart time
The start current time defines the duration of the Hotstart. This parameter
depends on the selected characteristic curve, i.e. the start current time can be
set individually for each characteristic curve.
Hotstart slope time
to set the time in which the current is reduced or increased from the hot start to
the welding current.
Double pulse amplitude
Determines the percentage of the maximum and base value of the set welding
energy for double pulse welding.
Slope-down jump
Amount of a current value to which the welding current is suddenly reduced. The
welding current drops abruptly to this current after the end of the welding
process. This jump prevents an increase in the weld seam width at an end crater
and ensures that the end crater is closed.
Slope-down time
Time period for the slope-down of the welding current to the reduction current.
This parameter depends on the selected characteristic curve, i.e. the slope-down
time can be set individually for each characteristic curve.
Slope-down value
Slope-down current after the slope-down time has elapsed. The slope-down
current refers to the welding current (100%). This parameter depends on the
selected characteristic curve, i.e. the slope-down value can be set individually for
each characteristic curve.
Function description
39
End-crater current
The end crater current is the welding current to which the welding current is
reduced, within the set slope-down time, when the welding process is ended.
Selecting the appropriate end crater current enables:
• Prevention of notches and end crater cracks at the end of the weld seam
due to rapid cooling of the weld pool
• Welding with reduced current at the end of the weld seam at edges or for
heat accumulation
Burning off
Time between switching off the DV motor and switching off the power section.
This parameter changes the burning off (characteristic value) predefined for each
characteristic curve and allows individual adjustment of the length of the free wire
end at the welding end.
A higher value for the burning off provides a shorter free wire end (as the wire
burns back longer) and a lower value provides a longer wire end.
Burning off set too large: Wire end may burn to the contact tip
Gas post flow time
Time between the power section being switched off (end of burning off time) and
the gas valve being switched off. This parameter depends on the selected
characteristic curve, i.e. the gas post flow time can be set individually for each
characteristic curve.
Hotstart dynamic correction (SDI)
Hotstart: Dynamic correction
Dynamic correction I1 (SDI)
Current I1 Dynamic correction
Dynamic correction I2 (SDI)
Current I2 Dynamic correction
Dynamic correction slope-down (SDI)
Dynamic correction during slope-down
Hotstart LBL correction
Arc length correction during Hotstart
LBL correction I1
Arc correction during current I1
LBLcorrection I2
Arc correction during current I2
Slope-down LBL correction
Arc correction during slope-down
Spot time
Welding time in the operating modes spot and interval, if the torch trigger is not
released prematurely.
Pause time
Pause time in interval mode (time between 2 spots).
Function description
40
6.2 Language menu
The available languages are displayed as flags in a selection list.
Use the cursor to select a language and confirm by pressing the rotary encoder.
The language becomes active immediately.
The selected language is illustrated by a box with cross.
Figure 21: Sub menu Language selection [BF14]
Function description
41
6.3 Saving and loading jobs
The Jobs submenu allows loading, saving and deleting of up to 12 jobs. The jobs
can be saved and loaded under a freely selectable name in a freely selectable
folder. Once the unit settings for recurring welding tasks have been determined,
they can be quickly recalled and reset on the welding unit.
Figure 22: Submenu Job [BF16]
6.3.1 Save job
Carry out the required machine setting
Pressing the "Submenus" button [BF12] accesses a selection list (drop
down list) for the existing submenu.
Select the Job folder by turning and pressing the rotary encoder
Select the required field by turning and pressing the rotary encoder. The
selected field has a blue frame. Free fields have grey numbers. The
numbers in fields where a job has already been defined are black.
Select the Save function by pressing the Corner menu key. The selected
field is highlighted in orange.
Enter the required name in the job memory by turning and pressing the
rotary encoder (e.g. name of an employee, name of a customer and/or
material). The job name can be up to 40 characters long.
The job is saved by selecting and pressing the "ok" field.
Function description
42
Press the "Home" button[BF18] to return to the main screen.
Figure 23: Submenu Job / Text input
Symbol
Function
Cursor left
Cursor right
New line
Delete letter to the left of the cursor
Table 4 Explanation symbols Text input
Function description
43
6.3.2 Load job
Pressing the "Submenus" button [BF12] accesses a selection list (drop
down list) for the existing submenu.
Select the Job folder by turning and pressing the rotary encoder
Select the required field by turning and pressing the rotary encoder. The
selected field has a blue frame.
Select the Load function by pressing the Corner menu key. The selected
field is highlighted in orange
Press the "Home" button to return to the main screen
The loaded job is displayed in the status bar on the main screen
Figure 24: Main screen / Status bar displaying selected job
Function description
44
6.3.3 Delete job
Pressing the "Submenus" button [BF12] accesses a selection list (drop
down list) for the existing submenu.
Select the Job folder by turning and pressing the rotary encoder
Select the required field by turning and pressing the rotary encoder. The
selected field has a blue frame.
Select the Delete function by pressing the Corner menu key
This procedure must be confirmed by pressing the Corner menu button
at the bottom right.
Press the "Home" button to return to the main screen.
Figure 25: Delete job
Function description
45
6.3.4 Rename job
Pressing the "Submenus" button [BF12] accesses a selection list (drop
down list) for the existing submenu.
Select the Job folder by turning and pressing the rotary encoder
Select the required job by turning and pressing.
Select the Rename function by pressing the Corner menu key
The stored name can be changed
The new job name is saved by selecting and pressing the "ok" field
Press the Home button to return to the main screen
Symbol
Function
Cursor left
Cursor right
New line
Delete letter to the left of the cursor
Table 5 Explanation symbols Text input
Function description
46
6.4 Setup submenu
Functions and processes can be defined very conveniently and clearly in the
Setup submenu.
The required setting is selected by turning the push and rotary encoder [Fig.
10]. The selected line is highlighted in orange.
Press the push and rotary encoder [Fig. 10] to display or activate the selection
of the setting to be changed. The value or setting to be changed is highlighted
in blue.
Turn the push and rotary encoder [Fig. 10] to the required value or setting.
Press the push and rotary encoder [Fig. 10] to confirm the selection.
Figure 26: Submenu Setup [BF17]
Function description
47
Name
Setting possibility
Description
Double pulse
Active
Inactive
Energy saving mode
Time
---Minutes
Inactive
Idle time until energy saving
mode becomes active
Colour scheme
Light
Dark
Gas test: Time
(Seconds)
Hold mode
Inactive
Action
Action and time
Hold time
Seconds
LBL correction Type
Voltage
Wire feed
Welding circuit:
Inductance
Micro Henry
Welding circuit:
Resistance
Milli Ohm
Up/Down Torch
Inactive
Job
Power output
Up/Down Speed
Slow
Neutral
Fast
Faster
Very fast
Factory settings
All settings (welding
parameters) are reset to
factory settings. This does
not affect: Job
Table 6 Setup submenu
Function description
48
7 Control lamps
Symbol
Description
Operation/
excess temperature
[BF20]
The symbol OPERATION in black indicates that there is an
open circuit voltage at the torch or electrode holder.
The symbol is located on the left in the characteristic curve
info bar
The symbol illuminates red and flashes in the event of
excess temperature.
The power section is switched off and no output voltage is
available as long as this symbol flashes red. After the unit
has cooled down, the LED is extinguished and welding can
be resumed automatically.
Function description
49
8 Other functions
8.1 Threading
The threading function is used to thread the welding wire into the torch hose set
without current. The welding wire is threaded into the torch hose set by means of
the push button above the feed unit (Fig. 4). By pressing the pushbutton
"Threading", threading is carried out for 2 seconds at reduced speed. The
threading speed is then increased over a period of approx. 2 seconds to the set
threading speed.
t
VD
ca. 2 s ca. 2 s
Figure27: Threading procedure
8.2 Gas test
The "gas test" is used to set the required gas quantity at the pressure reducer.
This enables the desired gas flow to be set without wire feeding and voltage.
A push button for the gas test is located above the feed unit (Fig. 4). When the
push button is pressed, the gas valve is opened and inert gas flows out of the
welding torch.
The gas test is automatically terminated after 20 seconds. The gas test can be
aborted prematurely by pressing the "Gas test" button or the torch button.
Function description
50
8.3 Water recirculation cooling
The compact units FOCUS.ARC P 250W, 300W, 350W, 400W and 450W as well
as the units with separate wire feed case FOCUS.ARC P 250WS, 300WS,
350WS, 400WS and 450WS are equipped as standard with water recirculation
cooling for the welding torch. A flow monitor in the cooling water return monitors
the flow rate and provides an error message if the flow rate falls below the critical
limit of 0.4 l/min. This protects the welding torch from overheating due to
insufficient water cooling.
8.4 Temperature monitoring of the power units
The welding current is automatically switched off if the permissible temperature
of the power components transformer and transistor switch is exceeded. This is
indicated by the control lamp Operation [BF20] and by an error message in the
main screen. After the power components have cooled down, the system
automatically switches back to the operating state (without power).
8.5 External cooling of the power units
The power units of the FOCUS.ARC P systems are designed for high operational
reliability. Optimum heat dissipation with minimum noise generation is achieved
by the targeted placement of the cooling fan and the power components.
8.6 Fan and water pump control
The FOCUS.ARC P has a demand-oriented fan and water pump control. The fan
and the water pump switch on immediately at the start of welding. After
completion of the welding process, a follow-up time of 7 minutes is set, which can
be changed in the Setup submenu. The fan and the water pump subsequently go
into standby. This reduces noise emission, wear and energy consumption.
To ensure perfect torch cooling during the first welding process, the water pump
is automatically activated after switching on the mains switch until cooling water
flows for 10 seconds in the return flow.
Accessories and options
51
9 Accessories and options
These operating instructions are based on the accessories approved by REHM.
9.1 Unit versions, accessories and options
FOCUS.ARC P
Compact units (select chassis separately)
Item no.
FOCUS.ARC P 250 0.8/1.0
1307045
FOCUS.ARC P 250 W 0.8/1.0
1307046
FOCUS.ARC P 300 0.8/1.0
1307055
FOCUS.ARC P 300 W 0.8/1.0
1307056
FOCUS.ARC P 350 1.0/1.2
1307065
FOCUS.ARC P 350 W 1.0/1.2
1307066
FOCUS.ARC P 400 1.0/1.2
1307075
FOCUS.ARC P 400 W 1.0/1.2
1307076
FOCUS.ARC P 450 1.0/1.2
1307085
FOCUS.ARC P 450 W 1.0/1.2
1307086
Units with separate wire feed case (select chassis separately)
Item no.
FOCUS.ARC P 250 S 0.8/1.0 operation in the wire feed case
1307047
FOCUS.ARC P 250 WS 0.8/1.0 operation in the wire feed case
1307048
FOCUS.ARC P 300 S 0.8/1.0 operation in the wire feed case
1307057
FOCUS.ARC P 300 WS 0.8/1.0 operation in the wire feed case
1307058
FOCUS.ARC P 350 S 1.0/1.2 operation in the wire feed case
1307067
FOCUS.ARC P 350 WS 1.0/1.2 operation in the wire feed case
1307068
FOCUS.ARC P 400 S 1.0/1.2 operation in the wire feed case
1307077
FOCUS.ARC P 400 WS 1.0/1.2 operation in the wire feed case
1307078
FOCUS.ARC P 450 S 1.0/1.2 operation in the wire feed case
1307087
FOCUS.ARC P 450 WS 1.0/1.2 operation in the wire feed case
1307088
ACCESSORIES
Intermediate hose set Gas cooled
Item no.
ZWIPA MSG 50MM² 1.4M GAS COOLED
7503015
ZWIPA MSG 50MM² 5M GAS COOLED
7503016
ZWIPA MSG 50MM² 10M GAS COOLED
7503017
ZWIPA MSG 70MM² 1.4M GAS COOLED
7503021
ZWIPA MSG 70MM² 5M GAS COOLED
7503022
ZWIPA MSG 70MM² 10M GAS COOLED
7503023
ZWIPA MSG 70MM² 15M GAS COOLED
7503024
ZWIPA MSG 70MM² 20M GAS COOLED
7503025
ZWIPA MSG 95MM² 1.4M GAS COOLED
7503031
ZWIPA MSG 95MM² 5M GAS COOLED
7503032
ZWIPA MSG 95MM² 10M GAS COOLED
7503033
ZWIPA MSG 95MM² 15M GAS COOLED
7503034
ZWIPA MSG 95MM² 20M GAS COOLED
7503035
Accessories and options
52
FOCUS.ARC P
Accessories
Intermediate hose set Water cooled
Item no.
ZWIPA MSG 50MM² 1.4M WATER COOLED
7503018
ZWIPA MSG 50MM² 5M WATER COOLED
7503019
ZWIPA MSG 50MM² 10M WATER COOLED
7503020
ZWIPA MSG 70MM² 1.4M WATER COOLED
7503026
ZWIPA MSG 70MM² 5M WATER COOLED
7503027
ZWIPA MSG 70MM² 10M WATER COOLED
7503028
ZWIPA MSG 70MM² 15M WATER COOLED
7503029
ZWIPA MSG 70MM² 20M WATER COOLED
7503030
ZWIPA MSG 95MM² 1.4M WATER COOLED
7503036
ZWIPA MSG 95MM² 5M WATER COOLED
7503037
ZWIPA MSG 95MM² 10M WATER COOLED
7503038
ZWIPA MSG 95MM² 15M WATER COOLED
7503039
ZWIPA MSG 95MM² 20M WATER COOLED
7503040
Torch MIG/MAG gas cooled
Item no.
Torch MAG MB 24D 3m Grip
7601566
Torch MAG MB 24D 4m Grip
7601567
Torch MAG MB 24D 5m Grip
7601568
Torch MAG MB 26D 3m Grip
7601569
Torch MAG MB 26D 4m Grip
7601570
Torch MAG MB 26D 5m Grip
7601562
Torch MAG MB 36D 3m Grip
7601571
Torch MAG MB 36D 4m Grip
7601561
Torch MAG MB 36D 5m Grip
7601572
Torch MAG MB 24D 7 3m UD Ergo SH
7601707
Torch MAG MB 24D 7 4m UD Ergo SH
7601708
Torch MAG MB 24D 7 5m UD Ergo SH
7601709
Torch MAG MB 26D 7 3m UD Ergo SH
7601710
Torch MAG MB 26D 7 4m UD Ergo SH
7601711
Torch MAG MB 26D 7 5m UD Ergo SH
7601712
Torch MAG MB 36D 7 3m UD Ergo SH
7601713
Torch MAG MB 36D 7 4m UD Ergo SH
7601714
Torch MAG MB 36D 7 5m UD Ergo SH
7601715
Torch MIG/MAG water cooled
Item no.
Torch MAG W 340D 3m
7601716
Torch MAG W 340D 4m
7601718
Torch MAG W 340D 5m
7601720
Torch MAG W 440D 3m
7601722
Torch MAG W 440D 4m
7601724
Torch MAG W 440D 5m
7601726
Torch MAG W 540D 3m
7601728
Accessories and options
53
Torch MIG/MAG water cooled
Item no.
Torch MAG W 540D 4m
7601730
Torch MAG W 540D 5m
7601732
Torch MAG W 340D 7 3m UD
7601717
Torch MAG W 340D 7 4m UD
7601719
Torch MAG W 340D 7 5m UD
7601721
Torch MAG W 440D 7 3m UD
7601723
Torch MAG W 440D 7 4m UD
7601725
Torch MAG W 440D 7 5m UD
7601727
Torch MAG W 540D 7 3m UD
7601729
Torch MAG W 540D 7 4m UD
7601731
Torch MAG W 540D 7 5m UD
7601733
Torch wear parts sets
Item no.
Wear parts set MB 26D
7700418
Wear parts set MB 36D
7700419
Wear parts set W 340
7700621
Wear parts set W 440
7700622
Wear parts set W 540
7700623
Ground cable
Item no.
Ground cable 35mm² 4m 13mm 400A clamp
7810102
Ground cable 50mm² 4m 13mm 500A clamp
7810109
Ground cable 70mm² 4m 13mm 600A clamp
7810104
Ground cable 95mm² 4m 13mm 600A earth clamp
7810150
Pressure reducer
Item no.
Pressure reducer Optimator Argon / CO2 20
7967932
Pressure reducer with content and work pressure gauge,
200bar, 32l/min.
7830100
Basket spool adapter
Item no.
Basket spool adapter Industry
7516000
Basket spool adapter Profi
7516004
Gas hose
Item no.
Gas hose
2200100
Inert gas filter 1/4" mounting between the gas hose and
pressure reducer
7501111
Coolant
Item no.
Coolant RCL 5l
1680075
Coolant RCL 25l
1680077
Accessories and options
54
Feed rollers for wire feeding unit
Individual feed rollers for solid wire
Item no.
Feed roller 0.6 – 0.8 mm solid wire
7503054
Feed roller 0.8 – 1.0 mm solid wire
7503055
Feed roller 1.0 – 1.2 mm solid wire
7503053
Feed roller 1.2 – 1.6 mm solid wire
7503056
Retrofit equipment
Housing
Item no.
Torch holder on compact machine
1180270
Torch holder on wire feed case
1180273
Options
Housing
Item no.
Operation on the machine
1381153
Without trolley (with base plate)
1381100
Profi trolley (50L)
1381101
Advanced trolley (50L with ramp and parking brake)
1381102
Upper control panel cover flap
1381107
Lower control panel cover flap
1381108
Tool box for compact units
1381143
Central connection variants
Item no.
Adapter Euro ZA to Dinse ZA
4300318
Commissioning
55
10 Commissioning
10.1 Safety instructions
Carefully read the operating instructions, in particular the ➔ Section 2 Safety,
before commissioning and before beginning work with this welding current
source.
Warning!
REHM welding equipment should be operated only by persons who are
trained and instructed in the use, maintenance and the safety regulations
concerning welding systems.
When welding always wear protective clothing and take care to avoid other
persons who may be in the vicinity being endangered by the UV radiation
emitted by the welding arc.
10.2 Working under elevated electrical risk in
accordance with the regulations from IEC 974,
EN 60 974-1, TRBS 2131 and BGR 500 Section
2.26 (previously VGB 15) (S)
The REHM - FOCUS.ARC P - gas welding equipment complies with the abovementioned regulations. It must be noted that for work under increased electrical
hazard, the welding current source must not be placed in this area. Regulations
EN 974-1, TRBS 2131 and BGR 500 Section 2.26 (previously VGB 15) must be
observed.
10.3 Positioning the welding unit
Place the REHM welding system so that the welder has sufficient space in front
of the unit to adjust and operate the controls.
Transport the unit only under compliance with the applicable accident prevention
regulations.
ATTENTION: The attachment of the FOCUS.ARC P systems for hanging
transport, e.g. on ropes or chains, is only permitted with the use of the
crane eyelets. Fastening to the handles or other parts of the system is not
permitted.
Danger! Electrical voltage!
Do not use the welding unit in the open in the rain!
Commissioning
56
10.4 Connecting the welding unit
Only connect the REHM welding current source to the power supply in
accordance with the applicable VDE regulations and also observe the regulations
of the respective professional associations.
When connecting the unit observe the instructions concerning the power supply
voltage and local mains fuse. Automatic circuit breakers and fuses must always
be sized for the stated source current. The necessary information can be found in
➔Section 16, Technical Data.
Always switch off the unit when not in use.
Place the inert gas bottle on the bottle bracket provided on the unit and secure
with the safety chain. Screw the bottle pressure reducer tightly on the thread,
attach the gas hose to the pressure reducer and check the connection for
tightness. Always close the bottle valve after completing work. Observe the
regulations of the respective professional associations.
10.5 Cooling the welding unit
Place the REHM welding unit so that the air entry and exit ports are not
obstructed. The machine can only achieve the specified duty cycle with sufficient
ventilation.
Ensure that no metal parts, grinding dust, dust or other foreign bodies can enter
the unit.
10.6 Water cooling for MIG/MAG welding torches
The FOCUS.ARC P 250W, 300W, 350W, 400W and 450W compact units and
the FOCUS.ARC P 250WS, 300WS, 350WS, 400WS and 450WS units with
separate wire feed case cool the torch with water.
The water level in the tank must be checked before commissioning. If the water
level is lower than 3/4 of the tank capacity, the cooling water must be refilled. The
special coolant "REHM - Coolant RCL" (order no. 1680075, 5 litres and 1680077,
25 litres) developed and tested by REHM is specified as the coolant. The cooling
water level must be checked at regular intervals.
The FOCUS.ARC P is equipped with a flow monitor which issues an error
message (see Section 13) if the water flow is too low.
10.7 Connecting the welding cables
The REHM welding units are equipped with quick-connect plugs and sockets for
connecting the grounding cable. In order to achieve optimum welding results,
ensure that all welding cable connections are tight and that the insulation is not
damaged. The contact transition surfaces must be kept clean and free from
tarnishing in order to avoid increased contact resistances, which cause
distortions in the welding result and local overheating in the connections.
10.8 Connecting the torch
For the connection of the MIG/MAG welding torch there is a special connection
on the housing (Euro central connection), through which the connections for the
welding current, the probe lines and the gas are made.
If water-cooled torches are used, the cooling water hoses are connected via
quick couplings. These are colour-coded (red = return, blue = flow).
Commissioning
57
Important!
When using a gas-cooled torch on a water-cooled system, the water
connections must be connected via a hose bridge or the water cooling
must be set to "Off" in the Setup submenu so that the water pump is not
damaged.
10.9 Inserting the wire
After inserting the wire on the coil mandrel, thread the wire manually through the
guides to the feed rolls. Ensure that you use the appropriate drive rollers
according to the wire diameter and wire type (solid). When the wire has been
inserted into the guide of the torch hose set past the second drive roller, fold the
pressure rollers onto the wire and fix them. Now thread the wire by pressing the
pushbutton Threading (Fig. 4). Ensure that the torch runs as straight as possible
without kinks in order to avoid complicating threading and to prevent the wire
from buckling or damaging the wire liner.
Operation
58
11 Operation
11.1 Safety instructions
Carefully read the operating instructions, in particular the ➔ Section 2 Safety,
before commissioning and before beginning work with this welding current
source.
Warning!
REHM welding equipment should be operated only by persons who are
trained and instructed in the use, maintenance and the safety regulations
concerning welding systems.
11.2 Checks before switching on
It is a requirement that
• the system is properly placed in accordance with ➔Section 10
Commissioning
• all connections (inert gas, torch connection) are properly made in accordance
with ➔Section 10, Commissioning
• the scheduled periodic maintenance work has been performed in accordance
with ➔ Section 13, Maintenance
• the safety equipment and the system components (in particular the torch
connection hoses) have been checked by the operator, are functional and
ready for use
• the operator and the assisting persons are wearing the appropriate protective
clothing and the securing of the work area has been completed so that no
uninvolved persons are placed in danger
11.3 Connecting the grounding cable
Warning!
Ensure that the welding current cannot flow through lifting device chains,
crane cables or other electrical conductors.
Ensure that grounding cables are connected to the workpiece as close as
possible to the welding site. Grounding cables that are connected to
distant points reduce the effectiveness and increase the risk of electrical
shock and vagrant currents.
11.4 Practical instructions for use
The following practical instructions for use can only provide an overview of the
various applications of REHM FOCUS.ARC P welding systems. If you have any
questions about special welding tasks, materials, inert gases or welding
equipment, please refer to the relevant technical literature or to the REHM
specialist dealer.
Operation
59
The REHM FOCUS.ARC P inert gas welding systems can be used to weld a
wide variety of materials, e.g. unalloyed and alloyed steels, stainless steels and
aluminium.
Various different wire diameters and materials are offered and used for
MIG/MAG welding. The diameter of the wire is based on the thickness of the
base material and the required welding current. The wire electrode material is
selected based on the base material and the desired quality of the weld seam.
The most common materials and their respective specifications can be found in
the relevant specialist literature.
Mixed gas consisting of argon with a content of 18 % CO2 is mainly used for
welding steels.
Mixed gas consisting of argon with a content of 2 % CO2 is mainly used for
welding stainless steels.
Pure argon serves as inert gas for aluminium.
The amount of inert gas required depends on the wire diameter, the gas
nozzle size, the welding current height and the air movement at the workplace.
The required gas quantity for mixed gases is approx. 7 ... 16 l/min, for argon at
approx. 10 ... 18 l/min.
General principle for the gas adjustment:
For steel: Wire diameter x 10 = gas volume in litres
For stainless steel: Wire diameter x 11 = gas volume in litres
For Aluminium: Wire diameter x 12 = gas volume in litres
The MIG/MAG welding torchesrecommended by REHM are to be connected in
gas-cooled design to the REHM units of the types FOCUS.ARC P 250, 300, 350,
400, 450, 250S, 300S, 350S, 350S, 400S and 450S, water-cooled torches of the
types 250W, 300W, 350W400W, 450W, 250WS, 300WS, 350WS, 400WS and
450WS.
The accessories for the torch depends on and must be matched to the particular
welding task.
Contact tips
Contact tips are wear parts and must be replaced periodically. Care must be take
to select contact tips of the correct size for the respective wire diameter.
Special contact tips for different wire diameters are available for aluminium
welding tasks, which can be found in the REHM welding accessories catalogue.
Gas nozzles
Gas nozzles in different versions can be found in the REHM welding accessories
catalogue.
Wire liners must be selected to match the various different types of material and
wire gauges. The range for this can be found in the REHM welding accessories
catalogue.
In addition, please refer to the instructions of the torch manufacturer (see
operating instructions).
The following points must be observed in order to achieve safe wire feeding:
Feed rollers must be selected to match the wire diameter.
Precise speed control of the feed motor ensures a constant wire feed speed.
Safe wire feeding is provided by the compact 4-roller system.
Weldable materials
Wire electrodes
Inert gas
MIG/MAG welding
torch
Torch
equipment
Wire liner
Wire feed setting
Operation
60
Care must be taken to ensure that the pressure on the wire is set correctly via
the feed rollers. With aluminium, the pressure should be as low as possible, but
still allow the wire to be transported safely. In the case of steel and stainless
steel, the pressure should be so strong that the wire coil can still be stopped
manually while the drive is running.
ATTENTION: In the welding shop, the side wall that protects the wire feed area
from access must be closed to avoid the risk of injury (e.g. crushing)!
The wire feed speed must be set so that a smooth and stable arc is produced.
When increasing the welding energy, the wire feed speed increases
automatically and can be easily corrected at the wire feed speed correction
button if necessary.
The brake of the uncoiling mandrel must be adjusted so that the wire does
not uncoil when the wire feed is switched off at the welding end.
The power of the machine is adjusted via the welding energy rotary knob
(and special parameters). The required welding power depends on the
respective welding task.
Uncoiling mandrel
setting
Welding current
level
Fault
61
12 Fault
12.1 Safety instructions
Warning!
If a fault occurs that represents a hazard to persons, systems and/or the
environment, switch off the system immediately and secure against
restarting.
Only restart operations with the system after the fault has been eliminated
and no hazard exists for persons, machines and/or the environment.
Faults must only be eliminated by qualified persons under the observance
of all safety instructions. ➔ Section 2
Before restarting, the system must be approved by qualified personnel.
12.2 Table of faults
Fan does not rotate
Cause: Remedy:
Fuse defective Replace fuse
Fan defective Service required !
Control defective Service required !
Cable break Service required !
Control lamp TEMPERATUR on
Cause: Remedy:
Permitted temperature in the power unit has been Leave to cool, ensure free air circulation, clean
exceeded the machine if necessary
Maximum duty cycle exceeded Allow system to cool down
Ambient temperature too high Provide cooling
Contamination of the air inlet or air outlet Cleaning, ensure free air supply
Air inlet or air outlet covered Remove cover, ensure free air
Fan defective Service required !
Welding current does not reach the set value or does not occur
Cause: Remedy:
Grounding cable poorly connected or not Check
connected at all
Fault
62
No inert gas
Cause: Remedy:
Bottle empty Check
Pressure reducer defective Check
Hose kinked Check
Machine gas valve defective Service required !
Arc sputters and jumps
Cause: Remedy:
Contact tip worn Replace contact tip
Feed rollers have incorrect diameter Use feed rollers with correct diameter
Wire liner very dirty Replace wire liner
Electrode and workpiece do not reach working Use thinner wire
temperature
Incorrect wire feed speed Adjust speed
Arc has a strange colour
Cause: Remedy:
Too little or no inert gas Check inert gas supply
Incorrect inert gas Use appropriate inert gas
Wire unwinds uncontrolled
Cause: Remedy:
Wire coil brake is applied either too strongly or too Adjust wire coil brake
weakly
Wire feeding problems Hose set should be blown out at
each wire change. Wire liner and feed rollers
must match the wire diameter.
Control defective Service required !
Water-cooled torch gets too hot
Cause: Remedy:
Water hoses kinked Check water hoses for correct position
Too little or no cooling water in the tank Check cooling water level
Water pump defective Service required !
Fault
63
12.3 Error messages
Error
number
Error
Cause
Elimination
1
Mains undervoltage
Mains voltage is below the
tolerance range
Switch the unit off and check the
mains voltage
2
Mains overvoltage
Mains voltage is above the
tolerance range
Switch the unit off and check the
mains voltage
22
Communication error
control/power section
The bus communication
between controller and power
section is faulty
Switch the current source off and
on again. If the error occurs again
→ Contact service
23
Communication error
current source
Bus current source
communication is faulty
Switch the current source off and
on again. If the error occurs again
→ Contact service
30
Data record Welding
characteristic curves
Data record for welding
characteristic curves is not
available or not compatible
Switch the current source off and
on again. If the error occurs again
→ Contact service
35
Data record Job
Data record for Job is not
available or not compatible
Load job again. If the error occurs
again → Contact service
42
Permitted temperature in
the power unit exceeded
Permitted temperature in the
power unit has been
exceeded
Allow the current source to cool
down
71
Coolant flow
• Coolant monitor detects
low coolant flow
• Coolant monitor blocked
by dirt
• Immediately switch off the
current source
• Check that the connecting cable
is plugged in
• Check the coolant level
• Check the connections on the
water cooled torch
• Eliminate interruptions in the
coolant circuit
• Bleed the coolant circuit
• Check the pump
77
Coolant excess
temperature
Temperature of the coolant is
too high
• Let the water cooler cool down
• Top-up coolant
80
Wire feed Motor current
The current consumption of
the wire feed motor is too
high
• Wire feeding does not run
cleanly
• DV motor is defective
> 100
Service call
An analysis of the cause can
be made by the service
technician
Contact service
Fault
64
13 Maintenance and repair
13.1 Safety instructions
Warning!
Maintenance and repair work may only be performed by persons who have
been trained by REHM. Please contact your REHM dealer. When replacing
parts only use REHM original spare parts.
If maintenance or repair work is performed on this unit by persons who
have not been trained and authorised to carry out the work by REHM, then
claims against REHM become void.
Before beginning cleaning work the unit must be switched off and
disconnected from the mains supply.
Before maintenance work the welding system must be switched off and
disconnected from the mains supply and secured against unintended
reconnection.
Supply lines must be shut off and vented free of pressure.
The warning notices listed in ➔ Section 2 “Safety” must be observed.
The welding system and its components must be maintained in accordance with
the requirements of the maintenance table.
Insufficient or improper maintenance or repair may result in operating faults.
Periodic maintenance of the system is therefore essential. No constructive
change or additions may be made to the system.
Maintenance and repair
65
13.2 Maintenance table
The maintenance intervals are recommended by REHM for standard
requirements (for example, single shift operation, use in a clean and dry
environment). The precise maintenance intervals are specified by your safety
officer.
Activity
Sectio
n
Interval
Cleaning the inside of the unit
14.3
min 2 x per year
Checking cooling water and the cooler
14.4
Daily
Functional test of the safety equipment
by operating personnel
Daily
Visual system check, particularly the
connection cables and torch hoses
Daily
Have the connecting lines and torch
hoses checked by qualified personnel;
log the checks in the logbook provided.
Perform checks more regularly
depending on the country-specific
laws.
Every six months
Have the complete welding system
checked by qualified personnel; log the
checks in the logbook provided.
Perform checks more regularly
depending on the country-specific
laws.
Annually
13.3 Cleaning the inside of the unit
If the REHM welding unit is used in a dusty environment the inside of the unit
must be cleaned at regular intervals by blowing out or vacuuming.
The frequency of this cleaning depends on the respective conditions of use,
however, it should be carried out at least twice a year. Only use clean, dry air to
blow out the unit or use a vacuum cleaner.
Maintenance and repair
66
13.4 Cooling water check
The water level in the tank must be checked daily on machines with built-in water
recirculation cooling.
If the water level is lower than 3/4 of the tank capacity, the cooling water must be
refilled. The special coolant "REHM - Coolant" (order no. 1680075, 5 litres and
1680077, 25 litres) developed and tested by REHM is specified as the coolant.
As part of this check, the degree of contamination in the cooling water should
also be checked. To ensure the proper torch cooling the cooler should be
cleaned by blowing out or sucking out.
Coolants are hazardous to the environment; they must not be drained into
the sewage system.
Dispose of these agents at appropriate collection points for hazardous
substances.
If maintenance or repair work is performed on this unit by persons who have not
been trained and authorised to carry out the work by REHM, then and claims
against REHM become void.
13.5 Proper disposal
Only for EU countries!
Do not dispose of electric appliances in domestic waste!
In accordance with the European Directive 2002/96/EC concerning old electrical
and electronic devices and its transposition into national law, used electrical
appliances must be collected separately and recycled in an environmentally
friendly manner.
Circuit diagrams
67
14 Circuit diagrams
Figure 28: FOCUS.ARC P current source
Circuit diagrams
68
Figure29: FOCUS.ARC P wire feed case
Circuit diagrams
69
Figure30: FOCUS.ARC P water cooling
Components
70
14.1 Characteristic curve current source
Pos.
Name
Part*
Comments
Item number
+ A0
ELKO EMV circuit board
E
250A-300A
350A-450A
690 0846
690 0847
+ A1
Power supply
E - 690 0777
+ A2
Main board
E
250A-300A
350A-450A
690 0747
690 0748
+ A2.1/A2.2
Primary IMS
E
250A-300A
350A-450A
690 0852
690 0850
+ A2.3
PFC IMS
E
250A-300A
350A-450A
690 0751
690 0861
+ A2.4
Rectifier IMS
E - 690 0854
+ A3
Power section - control
E
250A-300A
350A-450A
220 3113
220 3114
+ A4
Control (process card)
E - 690 0770
+ A5
Raspberry-PI-3
E - 690 0801
+ A6
PI CAN2 E -
690 0802
+ A7
Power supply
E
24VDC_ 5VDC_3A
420 0200
+ A8/+ A11
M2 BDE E -
690 0795
-
Complete controls 7 inch
E - 210 2289
+ A9/+ A12
Encoder circuit board
E - 690 0796
+ A10
Motor card E -
690 0730
- B2
Current converter
E - 470 0416
- B3
Flow monitor
E
DB/0.5l 6mm
360 0781
- B4
Temperature sensor
E - 360 0782
- F1
T 2A/ 500V E -
660 0042
- K1
Relay E 24V/DC
420 0203
- M1/M2/M3
Fan 80x80x38mm
V
24V/DC
410 0071
- M4
Fan 80x80x25mm Extension
V
24V/DC
220 3141
- M5
Wire feed motor
V - 410 0070
- M6
Water pump
V
230V/AC
410 0027
- M7/M8/M9
Fan Ø 120mm
V
230V/AC
410 0007
- S1
Main switch E -
420 0096
- S2/S3
Button “Gas” / “Wire feed”
E - 420 0082
Circuit diagrams
71
Pos.
Name
Part*
Comments
Item number
- T1/T2
Transformer
E
250A-300A
350A-450A
470 0411
470 0428
- T3
PFC choke
E
250A-300A
350A-450A
470 0412
470 0429
- T4
Autotransformer (water-cooled)
E - 470 0430
- V1
Main rectifier
E
250A-300A
350A-450A
530 0142
530 0144
- X4
Device socket ZWIPA
E
Case systems
360 0757
- X5
Mounting socket Ground
(workpiece)
E - 430 0122
- X6
Mounting socket positive
E - 430 0540
- X7/X12
Mounting socket positive for
ZWIPA
E - 430 0122
- X8/X13
Welding torch central connection
E
ZA
750 0443
- X9
RJ 45 socket
E - 430 0534
- X10
CAN socket 12 pin
E
Compact system
Case
360 0786
360 0788
- X11
Device socket ZWIPA
E
Case
360 0756
- X16
Torch socket 7 pin
E - 360 0733
- Y1
Solenoid valve
E
Compact system
Case
420 0202
420 0206
* E = spare part; V= wear part
Components
72
15 Components and spare parts
15.1 Characteristic curve wire feeding unit
Wire feeding unit REHM Item no. 400 0194:
Pos.
Name
Part
*
Comments
Item number
1
Wire infeed nipple - SET blue (Series)
V
Plastic/ ø0.6-1.6
2600400
2
Solid wire feed rolls
V
ø 0.6/0.8
7503054
V
ø 0.8/1.0
7503055
V
ø 0.9/1.1
7503065
V
ø 1.0/1.2
7503053
V
ø 1.2/1.6
7503056
Core wire feed rolls
V
ø 1.2/1.6
7503066
3
Capillary tube up to 1.6 mm ø wire
electrode
E
Ms
7503067
4
Protective tube for Teflon core up to 4 mm
outside diameter
E
Ms
7503068
* E = spare part; V= wear part
Pos. 1
Pos. 2
Pos. 3,4
Components
73
Components
74
Components
75
Components
76
Technical data
77
16 Technical data
Type overview
Technical data
FOCUS.ARC P Series
Power class
250
300
350
400
450
Setting range
[A]
20-250
20-300
20-350
20-400
20-450
Duty cycle (ED) at Imax. (40°C)
[%]
80
80
80
80
60
Weld current at 100 % ED
[A]
230
280
320
370
430
Idle voltage, approx.
[V]
89
89
89
75
75
Mains connection
[V]
3x400
3x400
3x400
3x400
3x400
Mains voltage tolerance
[%]
+15/-25
+15/-25
+15/-25
+15/-25
+15/-25
Power consumption at I max
[kVA]
8.4
11
13.7
16,8
20.6
Power factor
[cos phi]
0,95
0,95
0,95
0,95
0,95
Fuse (slow-blow)
[A]
16
32
32
32
32
Protection type
[IP]
23
23
23
23
23
Weight incl. trolley
Compact gas cooled
[kg]
46
46
49
49
49
Compact water cooled (W)
[kg]
56
56
59
59
59
With separate wire feed case Gas
cooled (S)
[kg]
57
57
60
60
60
With separate wire feed case Water
cooled (WS)
[kg]
70
70
73
73
73
Dimensions without trolley (LxWxH)
Compact gas cooled
[mm]
650x330x624
Compact water cooled (W)
[mm]
650x330x820
With separate wire feed case Gas
cooled (S)
[mm]
650x330x1100
With separate wire feed case Water
cooled (WS)
[mm]
650x330x1100
Dimensions with trolley (LxWxH)
Compact gas cooled
[mm]
1000x560x780
Compact water cooled (W)
[mm]
1000x560x1000
With separate wire feed case Gas
cooled (S)
[mm]
1000x560x1300
With separate wire feed case Water
cooled (WS)
[mm]
1000x560x1300
Subject to technical changes through further development.
a) Power factor = describes the degree of efficiency Efficiency on to Efficiency off, cos
generally describes the ratio of active power to apparent power
b) Degree of protection = Extent of protection provided by the enclosure against ingress of solid foreign bodies and
water (IP23 = protection against solid foreign bodies > 12.0 mm and against water
spray 60° from above)
Index
78
17 INDEX
Intended 8
Qualification 12
A
and health 11
Applications 11
C
Changes to the system 12
Checking cooling water and the cooler 66
Checks before switching on 58
Cleaning the inside of the unit 65
Commissioning 55
Connect grounding cable 58
Connecting the grounding cable 58
Connecting the welding unit 56
Contact tips 59
Cooling the welding unit 56
E
Electrodes 59
F
Fault 61, 64
Function description 18
G
Gas nozzles 59
I
Increased electrical hazard 55
Inert gases 59
Instructions for use 59
M
Machine name 2
Maintenance 64
Manufacturer 2
MIG/MAG welding torch 59
Water cooling 56
O
Occupational safety 11
Operating mode 24
Operation 58
Checks before switching on 58
Safety information 58
P
Product identification
Machine name 2
Type number 2
Proper disposal 66
Purpose of the document 12
R
Residual dangers 11
Index
79
S
Safety
Hazards of non-compliance 11
Safety information 6, 10, 11
Operation 58
Safety instructions
Safety symbols 6
Safety symbols 6
Storing the operating instructions 12
Symbols 9
T
Table of faults 61
Technical data 77
Threading 49
Torch accessories 59
Type number 2
Typographic distinctions 9
U
Uncoiling mandrel setting 60
W
Warning symbols on the system 10
Warnings and symbols
Presentation 10
Water cooling for MIG/MAG welding torches 56
Weldable materials 59
Wire electrodes 59
Wire liner 60
Working under elevated electrical risk 55
80
EC declaration of conformity
For the following named products
MIG/MAG impulse welding systems
FOCUS.ARC P 250
FOCUS.ARC P 300
FOCUS.ARC P 350
FOCUS.ARC P 400
FOCUS.ARC P 450
it is hereby confirmed that they comply with the essential protection requirements which are laid down in
the Directive 2004/108/EU (EMC Directive) of the council on the approximation of the laws of the Member
States relating to electromagnetic compatibility and in the Directive 2006/95/EU relating to electrical
equipment designed for use within certain voltage limits.
The above products comply with the requirements of this directive and comply with the safety requirements
for arc welding units in accordance with the following product standards:
EN 60 974-1: 2006-07
Arc welding equipment - Part 1: Welding current source
EN 60 974-2: 2003-09
Arc welding equipment - Part 2: Liquid cooling systems
EN 60 974-5: 2003-02
Arc welding equipment - Part 5: Wire feed device
EN 60974-10: 2004-01
Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements
according to the EC. Directive 2006/42/EC article 1, paragraph 2 the above mentioned products fall
exclusively within the scope of the directive 2006/95/EC relating to electrical equipment designed for use
within certain voltage limits.
This declaration is given for the manufacturer:
REHM GmbH u. Co. KG Schweißtechnik
Ottostr. 2
73066 Uhingen
Uhingen, 18/02/2019
submitted by
R. Stumpp
Managing Director
REHM – The benchmark for modern welding and cutting
The REHM range
▪
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INVERTIG.PRO digital TIG welding unit
▪
REHM MMA inverter technology
TIGER and BOOSTER.PRO 100 KHz electrode inverter
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REHM plasma cutting units
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Welding accessories and additional materials
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Welding smoke extraction fans
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Welding rotary tables and positioners
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Technical welding consultation
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Torch repair
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Machine Service
Please contact your local distributor:
REHM WELDING TECHNOLOGY –
German Engineering and Production at its best
Development, design and production – all under one roof –
at our plant in Uhingen.
Thanks to this central organisation and our forward-looking
commitment, new insights can be quickly incorporated into
the production process.
The requests and requirements of our customers form the
basis of an advanced product development.
A variety of patents and awards represent the precision and
quality of our products.
We place customer proximity and competence at the
forefront of our consulting, training and service activities.
WEEE-Reg.-No. DE 42214869
Stand 02/19 · Artikel-Nr. 730 2600
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