FRO­NIUS MW 1700 User manual

Operating
Instructions
Autotransformer MW 1700, MW 2200, TT
1700, TT 2200
42,0426,0037,EN 003-27092022
EN Operating Instructions

Contents
General 4
Machine concept 4
Controls and connections 4
Before commissioning 5
Safety 5
Required connection cables 5
Mounting the connection cables 6
Fitting the connection cable to the autotransformer 6
Mounting a plug on the mains cable 7
Final check 7
Start-up 8
Safety 8
Mounting the fixing brackets to the trolley 8
Mounting the system components on the trolley 9
Putting the unit into service 9
Care, maintenance and disposal 10
Safety 10
At every start-up 10
Every 6 months 11
Disposal 11
Troubleshooting 12
Safety 12
Troubleshooting 13
Technical data 15
Safety 15
MW/TT 1700/2200 auto-transformer 15
3
EN

General
Machine concept The digital family of machines provides tremendous flexibility and easy adaptab-
ility to many varied tasks. The reasons for these welcome characteristics may be
found not only in the modular product design, but also in the scope that the sys-
tem gives for troublefree system extensions. Among other things, features such
as their high-grade componentry, protective plastic surround and powder-coated
aluminium housing ensure that these units are highly reliable and durable.
The MW/TT 1700/2200 auto-transformer was specially designed to meet the re-
quirements of the digital family of machines and can be used with MW
1700/2200 and TT 1700/2200 power sources. It makes it possible for digital
power sources to be run on mains voltages of 460 V as well.
Controls and
connections
(1)
Front of auto-transformer
(3)(2)
Rear of auto-transformer
(1) Mains switch
for switching all system components of the welding set on and off cent-
rally
(2) Strain relief device for the power source
for leading-through the connection cable to the power source
(3) Strain relief device for the auto-transformer
for leading-through the mains cable
4

Before commissioning
Safety WARNING!
Danger from incorrect operation and work that is not carried out properly.
This can result in serious personal injury and damage to property.
▶All the work and functions described in this document must only be carried
out by technically trained and qualified personnel.
▶Read and understand this document in full.
▶Read and understand all safety rules and user documentation for this device
and all system components.
WARNING!
Danger from electrical current.
This can result in serious personal injury and damage to property.
▶Before starting work, switch off all devices and components involved and dis-
connect them from the grid.
▶Secure all devices and components involved so they cannot be switched back
on.
▶After opening the device, use a suitable measuring instrument to check that
electrically charged components (such as capacitors) have been discharged.
WARNING!
Danger from electric current due to defective system components and incor-
rect operation.
This can result in serious personal injury and damage to property.
▶All cables, leads and hosepacks must always be securely connected, undam-
aged and correctly insulated.
▶Only use adequately dimensioned cables, leads and hosepacks.
WARNING!
Danger due to insufficient ground conductor connection.
This can result in serious personal injury and damage to property.
▶The housing screws provide a suitable ground conductor connection for
grounding the housing.
▶The housing screws must not under any circumstances be replaced by other
screws without a reliable ground conductor connection.
Required con-
nection cables Power source 3x AWG12, 3.31mm² (.1304 in.) 43,0004,1993
Auto transformer 3x AWG12, 3.31mm² (.1304 in.) 43,0004,1993
5
EN

Mounting the
connection
cables
The following strain relief devices are included in the scope of supply of the auto-
transformer:
-Strain relief device for the MW/TT 1700/2200 power source, for 3xAWG12
connection cable
-Strain relief device for the MW/TT 1700/2200 auto-transformer, for 3x-
AWG12 connection cable
Carry out the following steps for both the power-source connection cable and
the connection cable for the auto-transformer.
1Shift the mains switch on the auto-transformer into the “0” position
2Unplug the unit from the mains or otherwise disconnect the mains power
supply
3Take the cover off the auto-transformer
4Strip off the insulation from approx. 170 mm (6.7 in.) of the end of the con-
nection cable
7
5Fit a wire-end ferrule to the PE
conductor
6Shorten the phase conductors to
approx. 150 mm (5.9 in.) and fit
wireend ferrules to them.
IMPORTANT! If you do not use any
wire-end ferrules, there is a risk of
short circuiting between the phase
conductors.
7Insert the connection cable into
the strain relief device.
8Tighten the clamping nut
Fitting the con-
nection cable to
the autotrans-
former
Mains cable
“INPUT 50/60 Hz”
Power source
“OUTPUT 50/60 Hz”
PE 460V 460V 230V 230V PE
Terminal strip
NOTE!
Running the autotransformer without
ALL of the cables being properly con-
nected can cause serious damage. Al-
ways connect all the phase conductors
and the PE conductor.
1Connect the phase conductors and
the PE conductor of the power-
source connection cable to the
“OUTPUT 50/ 60 Hz” connection
points for the power source.
2Connect the phase conductors and
PE conductor of the auto-trans-
former connection cable to the
“INPUT 50/60 Hz” connection
points for the mains cable.
6

Mounting a plug
on the mains
cable
The auto-transformer is designed to run on the mains voltage given on the rating
plate. If you intend to fit a mains plug to the auto-transformer connection cable,
this must be mounted in accordance with the applicable national Standards. For
details of fuse protection of the mains supply lead, please see the Technical
Data.
NOTE!
Inadequately dimensioned electrical installations can lead to serious damage.
The mains plug and mains supply lead, and their fuse protection, must be suit-
ably dimensioned.
Final check 1Check that the phase conductors and PE conductor of the connection cable
are correctly connected
2Check that the phase conductors and PE conductor of the connection cable
are firmly attached to the terminal strip
WARNING!
Danger from the mains voltage and the autotransformer output voltage.
An electric shock can be fatal.
▶The following operations have to be done with the unit switched on. Do NOT
on any account touch the auto-transformer or any of its parts while it is still
connected to the mains.
3Shift the mains switch on the auto-transformer into the “0” position
4Plug the unit into the mains or otherwise restore mains power supply
5Using a suitable testing instrument, check the mains voltage on the “INPUT
50/60 Hz” mains-cable connection points
6Shift the mains switch on the auto-transformer into the “I” position
7Using a suitable testing instrument, check the output voltage on the “OUT-
PUT 50/60 Hz” power-source connection points
8Shift the mains switch on the auto-transformer into the “0” position
9Put the cover back on the auto-transformer
NOTE!
The housing screws provide a suitable PE conductor connection for earthing
(grounding) the housing. These screws must NOT be replaced by any other
screws which do not provide a reliable PE conductor connection.
10 Shift the mains switch on the auto-transformer into the “I” position
11 Perform an insulation and PE conductor test, using suitable testing equip-
ment. Do this by placing the test-prod against any of the fixing-screws of the
cover.
12 Shift the mains switch on the auto-transformer into the “0” position
13 Unplug the unit from the mains or otherwise disconnect the mains power
supply
7
EN

Start-up
Safety WARNING!
Danger from incorrect operation and work that is not carried out properly.
This can result in serious personal injury and damage to property.
▶All the work and functions described in this document must only be carried
out by technically trained and qualified personnel.
▶Read and understand this document in full.
▶Read and understand all safety rules and user documentation for this device
and all system components.
WARNING!
Danger due to devices toppling over.
This can result in serious personal injury and damage to property.
▶If the welding system is not equipped with an auto-transformer, the cooling
unit must be installed right at the bottom.
▶Please see the user documentation for the respective trolley for more in-
formation about the trolley.
IMPORTANT! The following example of how to mount the auto-transformer onto
the trolley is for a combination of an MW 2200 power source, an FK 2200 cooling
unit and an “Easy” trolley. To put together any other combination, proceed ana-
logously.
Mounting the fix-
ing brackets to
the trolley
1Turn the trolley upside-down,
standing it on its handles, then
hold it in the vertical.
2Use a sharp pointed tool to pierce
the rubber mat where it lies over
the holes in the baseplate
3Turn the trolley over and place it
on its wheels again
4Attach each fixing bracket to the
baseplate with 3 screws
8

Mounting the
system compon-
ents on the trol-
ley
1Stack the system components on
top of one another, fixing each unit
to the one below it (and the auto-
transformer to the trolley) with 4
screws.
IMPORTANT! When mounting the
power source, take care with the con-
nector to the cooling unit. Do not sub-
ject the cable connection to tensile
strain.
Putting the unit
into service WARNING!
Danger from incorrect operation and work that is not carried out properly.
This can result in serious personal injury and damage to property.
▶All the work and functions described in this document must only be carried
out by technically trained and qualified personnel.
▶Read and understand this document in full.
▶Read and understand all safety rules and user documentation for this device
and all system components.
NOTE!
The ventilation arrangements for the auto-transformer are a very important
safety feature. When choosing the machine location, make sure that it is pos-
sible for the cooling air to enter and exit unhindered through the louvers.
1Shift the mains switch of the power source into the “O” position
2Shift the mains switch on the auto-transformer into the “0” position
3Plug the auto-transformer unit into the mains or otherwise restore mains
power supply.
4Shift the mains switch on the auto-transformer into the “I” position
5The auto-transformer is now ready for operation
9
EN

Care, maintenance and disposal
Safety WARNING!
Danger from incorrect operation and work that is not carried out properly.
This can result in serious personal injury and damage to property.
▶All the work and functions described in this document must only be carried
out by technically trained and qualified personnel.
▶Read and understand this document in full.
▶Read and understand all safety rules and user documentation for this device
and all system components.
WARNING!
Danger from electrical current.
This can result in serious personal injury and damage to property.
▶Before starting work, switch off all devices and components involved and dis-
connect them from the grid.
▶Secure all devices and components involved so they cannot be switched back
on.
▶After opening the device, use a suitable measuring instrument to check that
electrically charged components (such as capacitors) have been discharged.
WARNING!
Danger from electric current due to defective system components and incor-
rect operation.
This can result in serious personal injury and damage to property.
▶All cables, leads and hosepacks must always be securely connected, undam-
aged and correctly insulated.
▶Only use adequately dimensioned cables, leads and hosepacks.
WARNING!
Danger due to insufficient ground conductor connection.
This can result in serious personal injury and damage to property.
▶The housing screws provide a suitable ground conductor connection for
grounding the housing.
▶The housing screws must not under any circumstances be replaced by other
screws without a reliable ground conductor connection.
At every start-
up
-Check the mains plug and mains cable for damage
-Check that there is a gap of 0.5 m (1 ft. 8 in.) all around the device to ensure
that cooling air can flow and escape unhindered
NOTE!
Air inlets and outlets must never be covered, not even partially.
10