PI

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PI 200 - 250
Pi 250 E
Pi 200/250 HP
Pi 200/250 AC/DC
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Navigator E
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Navigator HP
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Pi AC/DC
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Error indicators
Overheating The LED shines if welding has been
interrupted due to too high temperature in the
machine. The machine will reconnect automatically
after a short cooling period.
Voltage fluctuations The LED shines red if mains
voltage is too high or too low (/- 15).
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Welding current
Setting the welding current When the amp. keypad
is activated, welding current (the main
parameter) is set via the knob unless remote
control has been chosen. When the machine is
inoperative, the set current is shown on the
display, whereas actual welding current is
displayed when the machine is operative.
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Welding voltage
Welding voltage The LED shines for safety reasons
when there is voltage (V) on the electrode or TIG
torch.
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Parameter units

• Units
• A lit LED indicates the parameter unit shown on
  the display
• A amperage
• s seconds
• Hz frequency in hertz
• percentage of e.g. welding current
• Ur reduced open circuit voltage (12V)

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Choice of welding process
Choice of welding process Basically, all TIG
machines are set for TIG welding. The LED shines
when the MMA welding keypad is activated and the
machine will change to MMA welding.
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Choice of welding process
Choice of welding process Basically, the machine
is set for MMA welding. The LED shines when the
LIFTIG keypad is activated and the machine will
change to TIG welding with LIFTIG ignition.
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Function of torch trigger
2-stroke An unlit LED indicates that 2-stroke is
active. Welding begins when the torch trigger is
activated and ends when the torch trigger is
deactivated.
4-stroke A lit LED indicates that 4-stroke is
active. Welding begins when the torch trigger is
activated. Then the torch trigger is deactivated.
To finish welding, the torch trigger must be
activated again.
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Current setting HP
Internal adjustment Unlit LEDs for remote
control or torch adjustment indicate current
setting from the control panel of the machine.
The knob is used to set the current. External
adjustment Remote control is used to set the
current/ parameters. Dialog adjustment The
regulator on the Dialog TIG torch is used to set
the current. Maximum current is set by means of
the internal knob.
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Current setting E
Internal adjustment When the LED for remote
control is unlit, the welding current is always
adjusted from the control panel of the machine.
The knob is used to set the welding
current. External adjustment A lit LED indicates
current/parameter setting through remote control.
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Ignition method
TIG welding There are two optional ignition
methods HF ignition When the LIFTIG LED is
unlit, the machine ignites by means of a high
frequency spark (HF) the tungsten electrode does
not touch the workpiece (contact-free
ignition). LIFTIG ignition The tungsten
electrode must touch the workpiece in order to
establish the arc. The torch trigger is activated
and the tungsten electrode is lifted from the
workpiece. The arc is established.
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Programme setting
10 10 10 10 programme settings This
function allows the welder to save frequently
used settings in the machine. In case of several
users of one machine, the function is an
advantage. HP 10 10 programme
settings AC/DC 10 10 10 10 programme
settings While pressing the keypad, the display
will show a "P" followed by a number 1, 2 etc.
Each number is a complete setting of all
parameters of the machine. Programmes are chosen
by means of the control knob.
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Arc Power
Arc Power for MMA welding This function is used
to stabilize the arc during MMA welding. Arc
Power briefly increases the welding current in
case of unintended short circuits to the
workpiece. Arc Power can be set between 0 and
100 of the set welding current.
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Hotstart
Hotstart An auxiliary function for troublefree
ignition, even with difficult-to-ignite or
difficult-to-weld types of electrodes, such as
basic electrodes. The hotstart function
minimizes the risk of welding errors. The
hotstart value can be set between 0 and 100 of
the set welding current.
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Spot welding time
Spot welding time Welding begins when the torch
trigger is activated. The spot welding time is
the time during which you weld with the set
current. This function is also used for
breakdown through two plates or for uniform,
short welds. Slope-up/slope-down time are not
included in the spot welding time.
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With or without pulse

• When pulse welding has been chosen, one of the
  LEDs will always be lit.
• Unlit LEDs indicate that welding without pulse
  has been chosen.
• There are 3 optional pulse settings
• Traditional pulse (manual setting)
• Quick pulse (semiautomatic setting)
• Synergy PLUS? (full synergy - only amp. setting
  required)

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Tack-welding function

• Tack-welding function
• A lit LED indicates that the tack-welding
  function is active.
• This function is used for fusing and fixing
  materials before welding, and is always used in
  2-stroke setting.
• The tack-welding function features quick
  response time on the torch slope-up and
  slope-down times are reset automatically.

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Scroll function
Secondary settings A press on the keypad will
guide the welder step-by-step through the row of
LEDs above the keypad. A lit LED indicates that
the relevant parameter can be read on the display
and adjusted with the knob. After pressing the
keypad, the display will automatically change to
display of Amp. after 5 seconds.
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Gas pre-flow
Gas pre-flow time Gas pre-flow is the period of
time in which gas flow begins until HF ignition,
or the period of time from activating the torch
to lifting it away from the workpiece when
LIFTIG is used. The function is used to
facilitate ignition and to flow the TIG hose as
well as to protect the arc ignition point. Gas
pre-flow time can be set between 0.0 and 10
seconds.
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Start Amp
Lit LEDs indicate the present welding phase when
the A keypad has been activated for display of
current.
Start Amp Start Amp value is set as a percentage
of the welding current and is variable between 10
and 200 of the set welding current (minimum 7 A).
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Slope-up
Lit LEDs indicate the present welding phase when
the A keypad has been activated for display of
current.
Slope-up time From establishment of the arc, the
welding current will slope-up from start Amp
value to the desired welding current. The
duration of this phase is called the slope-up
time. Slope-up time can be set between 0 and 25
seconds.
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Slope-down
Lit LEDs indicate the present welding phase when
the A keypad has been activated for display of
current.
Slope-down time When welding is interrupted with
the torch trigger, the slope-down phase begins.
In this phase the current is sloped-down from the
set welding current to the stop Amp. The duration
of this phase is called slope-down time.
Slope-down time can be set between 0 and 25
seconds.
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Stop Amp
Lit LEDs indicate the present welding phase when
the A keypad has been activated for display of
current.
Stop Amp Stop Amp value is set as a percentage of
the welding current and is variable between 10
and 90 of the set welding current (minimum 7 A).
Then gas post-flow begins.
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Gas post-flow
Gas post-flow Is the time from extinction of the
arc to interruption of the gas supply. This
function is used to protect the weld pool and the
tungsten electrode and to cool the torch. Gas
post-flow time can be set between 0 and 20
seconds.
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Idling current or extra current
Lit LEDs indicate the present welding phase when
the A keypad has been activated for display of
current.
Idling current/extra current To activate this
function (only 4-stroke), the torch trigger must
be briefly (lt 0,3 second) activated during
welding. Idling current or extra current is a
percentage of the set welding current. The value
is variable between 10 and 200 (min. 7 A).
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Pulse parameters
If traditional slow pulse welding has been
chosen, pulse parameters can be chosen and
changed during welding.
Pause time Indicates the time of welding with
base current. Time can be set between 0.01 and 10
seconds.
Base current To be set as a percentage value
between 10 and 90 of the set welding current
(minimum 7 A).
Pulse time Indicates the time of welding with
pulse current. Pulse current is identical with
the set welding current. Time can be set between
0.01 and 10 seconds.
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Pulse parameters
If quick pulse welding has been chosen, pulse
parameters can be chosen and changed during
welding.
Pulse frequency (Hz) Indicates number of pulses
per second. Pulse current is identical with the
set welding current. Frequency can be set
between 25 and 247 Hz.
Base current Is set as a percentage value between
10 and 90 of the set welding current (minimum
7 A).
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Type of current
Choice of current Generally speaking, an AC/DC
welding machine, also referred to as a double
current machine, welds almost any material
(patented D.O.C. system). A lit LED indicates
that AC current has been chosen. AC is chosen
for welding aluminium and aluminium alloys. The
positive current in AC removes the oxide membrane
on the surface, and the negative current gives
penetration into the material. DC current is
used for all other materials, such as stainless,
copper and mild steel. DC current is always used
in MMA welding.
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AC frequency
Frequency control in TIG welding One of the major
advantages of the inverter is the infinitely
variable adjustment of the /- frequency.
Increasing frequency gives a narrower weld pool,
increasing penetration into the material and
stabilization of the arc. The AC /- frequency
can be set between 25 and 150 Hz in TIG welding.
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Electrode preheating
TIG electrode preheating When igniting the TIG AC
arc, the tungsten electrode is preheated by means
of a direct current with positive polarity.
Preheating of the electrode facilitates
ignition of the arc due to thermal heating. At
the same time preheating contributes to increased
ionization of the spark gap. Preheating is
adjusted in accordance with the diameter and
profile of the electrode. Preheating time can
be adjusted to all types of electrodes and
welding conditions.
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AC-t-balance (time-based)
/- time balance This function is used to adjust
the cleaning power in TIG welding with AC
current. The function is a time-based balance
between the positive and the negative half
period, adjustable between 15 and 85. The
percentage indicates the negative half
period-share of a full period. The adjusted
balance must provide a suitable cleaning zone
around the weld pool.
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AC-I-balance (/- current balance)
Current balance This function is used to adjust
the positive share of the current to the
negative. A reduction of the positive cleaning
current will result in considerably sharper
tungsten electrodes and allow welding in sheet
metals. At the same time the lifetime of the
electrodes is increased.
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ContentsSimple and illustrative

• Applications
• Configurations
• Marketing material
• Technical data
• USP - Arguments
• Why choose Migatronic?
• Service and maintenance

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Applicationsdesigned for quality welding

• Pi 200 and Pi 250 have been designed for
• AC versions have been designed for aluminium and
  magnesium and other light-alloy metals for
  container construction and use in the transport
  sector, façade industry, etc.
• All DC weldable TIG and MMA welding operations,
  such as construction of stainless tanks and
  boilers, offshore or food industry.
• The powerful Pi machines also feature MMA welding
  with most types of electrodes.
• The mono-phase HP and AC/DC versions can be
  supplied with PFC function allowing welding with
  up to 200A by the use of only 16A mains fuses.

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ConfigurationsSimple and serviceable

• Pi can be supplied with or without watercooling
  of TIG welding cables
• Pi can be supplied with 3 control box variants (E
  - HP - AC/DC)
• Pi TIG welding cables are supplied in 4 or 8 m
  lengths as standard
• Pi can be supplied with Dialog torch adjustment
  from the handle
• Pi can be supplied with a functional trolley
• Pi can be supplied with remote control, TIG foot
  control unit or pocket control unit for MMA
• Pi can be supplied with TIG torch holder

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Marketing materialDocumentation

• Migatronic offers a variety of marketing material
• cd-rom and disc information
• Homepage www.migatronic.com
• Complete machine catalogue with complet product
  range
• Brochures and Welding bible in several
  languages
• Standard configurations or choice via
  configurator
• Training compendiums in several languages
• Support and guidance
• Manpower support for special events
• Sales training
• Posters etc.

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USP - ArgumentsPi features

• Pi 200 and 250 can be supplied in 7 adjusted
  basic variants
• AC/DC TIG double current with all facilities
• Two mono-phase with and without PFC a
  three-phase version
• HP With HF and LIFTIG ignition and all pulse
  functions
• Two mono-phase with and without PFC a
  three-phase version
• E version MMA (DC) incl. TIG with LIFTIG (400
  V)
• Synergy PLUS New pulse principle for better
  arc control
• D.O.C. Dynamic Oxide Control system increased
  welding speed
• PFC Power Factor Correction - full mono-phase
  200A performance on 16A mains fuses
• New design Rounded corners - Hardwearing -
  Functional trolley
• Idling/extra current Active arc during change
  of filler material
• Programme setting Up to 40 settings for users
  own programmes
• Dust cover Protective exclusive dust cover as
  standard

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Technical dataComparable and usable

• Machine type Pi 200 Pi 250
• Current range 7 - 200 A 7 - 250 A
• Mains voltage (/-15) 1/230V 3/400V
• Duty cycle 20 TIG 100 170 A 190 A
• Duty cycle 20 TIG 60 200 A 230 A
• Duty cycle 40 TIG 100 140 A 150 A
• Duty cycle 40 TIG 40 200 A
• Duty cycle 40 TIG 35 250 A
• Open circuit voltage Uo 94 V 94 V
• IP class IP 23 IP 23
• Weight 19 kg 20 kg

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Why chooce Migatronic?Tangible quality

• One of Europes leading manufacturers within the
  inverter technology
• Subsidiaries and importers throughout Europe
• ISO 9001 certified with more than 350 employees
  in Europe
• Original sales and service network with support
  throughout Europe
• More than 35 years experience of manufacturing
  welding machines
• Knowledge of arc welding processes
• Sales training of dealers and end users
• Robust and reliable welding machines for
  industrial use
• Large machine flexibility and high resale value
  of used equipment
• Reference list with comparable applications

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Service and maintenancePreventive and continuous
maintenanceis worth your while

• Different levels of service subscription and
  service agreements
• Full service guarantee on the welding machine
  after repair
• Systematic maintenance at fixed intervals
• Application training for customers and dealers
• Own service school with training in specific
  machines
• 95 on site repair by our service vehicles
• Specialized application solutions adapted to
  environment and customers
• Always original spares and a large range of
  exchange products
• Repair of hoses and cables as per agreement