Weiro WM250FI Manual de usuario
THANKS FOR PURCASHING OUR PRODUCT
WM –350FI
CO² / MIG / MAGAUTOMATIC WELDING MACHINE
W E I R O
OPERATION MANUAL
(Read the manual carefully before installation, operation and maintenace)
Safety Depends on You
WEIRO are welding and cutting equipment is designed and built with safety
in mind. However, your overall safety can be increased by proper
installation... and thoughtful operation in your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS
MANUAL AND THE SAFETY PRECAUTIONS CONTAINED
THROUGHOUT. And, most importantly, think before you act and be
careful.
C V. A N U G R A H D U TA N I A G A
Jln. Arief Rahman Hakim 51 Komplek Ruko 21 Klampis Blok D-1
Telp. 031 –5990089, 5997259 (Hunting)
Fax. 031 –5966099
Email : adn_office@yahoo.com
- 1 -
Index
1. Principle &Technical data……………………………………….…(1)
2. Features & Applications……………………………………….…...(3)
3. Installation Guide…………………………………………….…….(5)
4. Operating Instruction…………...…………………………….….....(9)
5. Repair & Maintenance……………………………………….…….(13)
6. Error Code........................................................................................(16)
Appendix A: EMC Suggestion for installation and use of welder….….(17)
Appendix B: Feedback Form…………………………………………...(19)
This operating manual can be fit for MIG-FI (including WM250FI/350FI/500FI)
series welding machines. The technical data are measured with power supply 3
phase 380V, the data will be changed when you use different voltage or frequency.
- 2 -
Principle & Technical data
MIG-FI Series Block diagram of principle shown as Figure 1
Input (3~380V/50Hz)
Output
Figure1: Block diagram of principle
This series welding machines apply IGBT soft switch inverter technology. 3-phase input volt
380V are rectified by rectifier, inverted into HF AC, reduced by HF transformer, rectified and
filtered by HF rectifier, then output DC power suitable for welding. After this process, the
welder’s dynamically responsive speed has been greatly increased, so the welder size and
weight are reduced noticeably. Power source enjoys good anti-fluctuating ability and
high-quality performance.
MIG-E Series Volt-Ampere Curve as shown in Figure 2:
Figure 2: MIG-FI Series Volt-Ampere Curve
U (V)
-
80
-
60
-
40
-
20
-
0
U2=14+0.05I2
I (A)
3 phase
Rectifier
HF
Inverter
HF
Transformer
Rectifier &
Filter
Control circuit
+
-
- 3 -
1. Main technical parameters
Items
WM250FI
WM350FI
WM500FI
Rated input voltage (V)
/frequency (Hz)
3-phase 380±10% /50
Rated input capacity (KVA)
8
14
25
Rated input current (A)
12
21
38
Power factor
0.95
Rated duty cycle
60%
Open load voltage (V)
51
72
81
Welding current range (A)
40～250
60～350
60～500
Welding voltage range (V)
14～30
15～40
15～50
Wire diameter (mm)
0.8～1.0
0.8～1.2
1.0～1.6
Wire feeding type
Wire pushing
CO2gas flow rate (L/min)
10～20
15～25
15～25
Protection degree
IP21S
Insulation degree
H/B
Dimensions (mm3)
501×235×495
Weight (Kg)
20
26
28
Table 1: Parameter Specification
- 4 -
2. Main Circuit diagram
Figure 3 : Main circuit diagram
2X2:11
2X2:4
1X3:2
1X3:3
1X3:4
1
-+
2X1:2
2X1:1
2X1:3
2X3:2
2X3:1
~27V
3X4:1
3X4:2
3X4:5
3X4:4
Drive board
FA1
BB1
N4
N3
N2
N1
C1
R1RE1
TB1
1
MIG350D Main Circuit Breaker
wi re fe ed e r
QB1
-
+
T2
G1
G2
G3
G4
E1
E2
E3
E4
2XJ1 2XG1 2XJ22XG2 2XJ3 2XJ42XG3 2XG4
2
~10V
~22V
~22V
V+
RA1
Display Board
Front panel YKH
T1
1 2
Re ar pa ne l
BE1
M1
QN1
RA3
GQ1
3X5:3
3X5:1
1X2:1
1X3:1 1X2:3
3X1:2
3X1:3
3X1:1
3X4:5
3X4:6
RB1
RB2
R2 C6
C7R3
C10
6
5
4
3
2
1
7
3X3:8
3X3:7
3X3:6
3X3:2,3
3X3:4,5
3X3:1
7
3
4
5
6
7
10
8
9
Q1 A4 IGB T protection board Q2
A2
A3
X1
X2
RD2
3X2
C2 C3
C4
C5
C8
2
3
C9yellow
blue
red
V-
3X4:3
Power charging baord
A1
11
~10V
1X4
1
1X1:5,6
1X1:1,2
1X1:3,4
1X1:5,6
1X1:1,2
1X1:3,4
6
RA2
- 5 -
Features & Applications
This inverter CO2/MAG welders are high-quality performers that can be used for all-purpose,
semi-automatic CO2 gas shield welding with solid or flux-cored wire (Ф0.8-Ф1.6mm)for
welding mild steel and low alloy steel work pieces. This series welder enjoys reasonable static
characteristic and sound dynamic characteristic.
Features and benefits:
◆Inverter technology can ensure fairly good stability of output volt when fluctuation occurs
in input primary volt or arc length changes, as well as startling arc self-adjustability and
stable welding process.
◆Less spatter, high deposit efficiency.
◆Less weld distortion, good weld formation.
◆High success rate of arc-starting due to stronger pulse strike.
◆Reducing molten ball while stopping arc.
◆Reducing labor intensity while welding long weld by using auto-lock function.
◆Stable wire feeding due to consistent output of power circuit.
◆Small, light and portable.
◆Digital control, with error code display functions.
◆Energy-saving, low expense and flexible to various input primary quality.
This series welding machine is strict in line with National standard GB15579.1-2004 <<”Arc
welding equipment” Chapter one: Welding Power Source>>.
- 6 -
Installation Guide
1．Pre-installation
1.1 Installation Environment
The MIG-E series welding machines are designed for use in adverse environments.
Examples of environments with increased adverse conditions are
In locations in which freedom of movement is restricted, so that the operator is
forced to perform the work in a cramped (kneeling, sitting or lying) position with
physical contact with conductive parts;
In locations which are fully or partially limited by conductive elements, and in
which there is a high risk of unavoidable or accidental contact by the operator;
In wet or damp hot locations where humidity or perspiration considerably reduces
the skin resistance of the human body and the insulation properties of accessories.
Environments with adverse conditions do not include places where electrically
conductive parts, in the near vicinity of the operator, which can cause increased
hazard, have been insulated.
1.2. Installation Location
Be sure to locate the welder according to the following guidelines:
In areas, free from moisture and dust.
Ambient temperature between 0 degrees C to 40 degrees C.
In areas, free from oil, steam and corrosive gases.
In areas, not subjected to abnormal vibration or shock.
In areas, not exposed to direct sunlight or rain.
Place at a distance of 12" (304.79mm) or more from walls or similar boundaries
that could restrict natural airflow for cooling.
1.3 Power Source Connections
Warning _______
Thermal Arc advises that this equipment be electrically connected by a qualified
electrician.
ELECTRIC SHOCK can kill; SIGNIFICANT DC VOLTAGE is present after
removal of input power.
DO NOT TOUCH live electrical parts. _____________
- 7 -
SHUT DOWN welding power source, disconnect input power employing
lockout/tagging procedures.
Lockout/tagging procedures consist of padlocking line disconnect switch in open
position.
Removing fuses from fuse box, or shutting off and red-tagging circuit breaker or
other disconnecting device.
1.4．Power Supplier Requirements
Input volt must be standard sine wave, effective value 380V±10%, frequency
50Hz.
Unbalance degree of 3-phase volt must be no more than 5%.
Power supply:
Table 3: Power supply connection
Note: The size of fuse and breaker in the table are for reference only.
Model
WM250FI
WM350FI
WM500FI
Power supply
3 phase AC 380V
Min. capacity
Power network
12KVA
26KVA
45KVA
Generator
16KVA
34KVA
60KVA
Input volt protection
Fuse
20A
30A
50A
Circuit breaker
20A
32A
63A
Cable size
(cross-section)
Input volt
≥1.5mm2
≥2.5mm2
≥4mm2
Output volt
25mm2
35mm2
50mm2
Ground lead
≥1.5mm2
≥2.5mm2
≥4mm2
- 8 -
1.5. Machine Assembling Guide:
This series welder is small, light and portable. They will be more convenient if place
them on the trolleys. Ensure the location where to place the welder is even.
Figure 4: Connection Chart for MIG-E Series
Preparation prior to operation procedure:
(1) Connect the welder’s terminal plug (-) to the work piece by work lead.
(2) Connect the welder’s terminal plug (+) to the wire feeder by welding cable.
(3) Connect the welder’s control cable socket to the wire feeder by control cable.
(4) Connect feeder’s gas hose to the regulator.
(5) Connect the regulator’s heater cable to the welder’s “gas heater power “cable socket.
(on the rear panel).
(6) Connect the welder’s power cable to the disconnection switchboard, while grounds
the lead safely.
(7) Reset the circuit breaker on the welder’s rear panel.
- 9 -
2. Operating procedure:
Reset the circuit breaker on the switchboard, then the welder’s indicator lamp will turn on,
and the cooling fan will spin. Press on the “Inch feeding” button on the feeder’s controller,
the feeder begin to feed wire. Preset the process parameters by regulating the controller,
tuning the knob, and flipping the switch to proper location on the front panel of the welder.
When the torch switch is pulled, the feeder start to feed wire, and CO2will blow out of the
nozzle, therefore it can be used for welding. Operators can select parameters from table
listed below. Be sure to turn off the valve of gas bottle and unplug the power cord while
stop welding.
Welding current (A)
Welding voltage (V)
Suitable wire (mm)
60~80
17～18
Ф1.0
80~130
18～21
Ф1.0、Ф1.2
130~200
20～24
Ф1.0、Ф1.2
200~250
24～27
Ф1.0、Ф1.2
250~350
26～32
Ф1.2、Ф1.6
350~500
31～39
Ф1.6
Table 4: Suggest welding parameters for selected wire
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