Amada MEA-100B User manual

Z06OM1200070-10
OPERATION MANUAL
Original instructions
AC WELDING POWER SUPPLY
MEA-100B

MEA-100B
1
Thank you for purchasing our AC Welding Power Supply MEA-100B.
・This operation manual explains its method of operation and precautions for use.
・Before using, read this operation manual carefully; after reading, save it in a proper place
where you can easily access.
Contents
1. Special Precautions.................................. 1-1 to 1-5
2. Features..................................................... 2-1
3. Packaging.................................................. 3-1
4. Name and Functions of Each Section ..... 4-1 to 4-4
5. Connection ................................................ 5-1
6. Before the Operation ................................ 6-1 to 6-4
7. Basic Operation ........................................ 7-1 to 7-13
8. Stepper-Up Function................................. 8-1 to 8-4
9. Detail Settings (SET2 Screen) .................. 9-1 to 9-7
10. Interface................................................... 10-1 to 10-8
11. Timing Chart............................................ 11-1 to 11-6
12. Troubleshooting...................................... 12-1 to 12-4
13. Specifications.......................................... 13-1 to 13-8
14. External Communication Function ........ 14-1 to 14-13
15. Outline Drawing ...................................... 15-1
16. Schedule Table........................................ 16-1 to 16-4
EU Declaration of Conformity

MEA-100B
1. Special Precautions
1-1
1. Special Precautions
(1) Safety Precautions
Before using, read "Safety Precautions"
carefully to understand the correct method of
use.
■These precautions are shown for safe use
of our products and for prevention of
damage or injury to operators or others.
Be sure to read each of them, since all of
them are important for safety.
■The meaning of the words and symbols is
as follows.
These symbols denote
"prohibition".
They are warnings
about actions out of the
scope of the warranty of
the product.
These symbols denote
actions which operators
must take.
Each symbol with a
triangle denotes that the
content gives notice of
DANGER, W
ARNING or
CAUTION to the
operator.
Denotes operations and practices that
may imminently result in serious injury
or loss of life if not correctly followed.
Denotes operations and practices that
may result in serious injury or loss of life
if not correctly followed.
Denotes operations and practices that
may result in personal injury or damage
to the Power Supply if not correctly
followed.
Do not touch the inside of the Power Supply unnecessarily
Since very high voltages are applied to the inside of this Power Supply, it is very
dangerous to touch it unnecessarily.
Any person other than service personnel, or authorized representatives’
personnel must not touch the inside.
Never disassemble, repair or modify the Power Supply
These actions can cause electric shock and fire. Consult us or your distribution
for inspection and repair.
Never burn, destroy, cut, crush or chemically decompose the Power Supply
This product incorporates parts containing gallium arsenide (GaAs).
DANGER
！
W
ARNING
！
CAUTION
！
DANGER
！

MEA-100B
1. Special Precautions
1-2
Do not put your hands between the electrodes
When welding, keep your fingers and hands away from the electrodes.
Do not touch any welded part or electrodes during welding and just after
welding finished
The welded part of a workpiece, electrodes and arm are very hot.
Do not touch them; otherwise you may be burnt.
Ground this Power Supply
If the Power Supply is not grounded, you may get an electric shock when fault
occurs, or electricity leaks.
Apply Single-Phase, 200/220/230/240/380/400/460/480 V AC power supply
Application of a voltage out of the specified range can cause fire and electric
shock.
Connect the specified cables securely
Cables of insufficient current capacities and loose connections can cause fire
and electric shock.
Do not damage the power cable and connecting cables
Do not tread on, twist or tense any cable.
The power cable and connecting
cables may be broken, and that can cause electric shock and fire. If any part
needs to be repaired or replaced, consult us or your distributor.
Stop the operation if any trouble occurs
Continuous operation after occurrence of a trouble such as burning smell,
abnormal sound, abnormal heat, smoke, etc. can cause electric shock and fire.
If such a trouble occurs, immediately consult us or your distributor.
Persons with pacemakers must stay clear of the welding machine
A person who uses a pacemaker must not approach the welding machine or
walk around the welding shop while the welding machine is in operation, without
being permitted by his/her doctor. The welding machine generates a magnetic
field and has effects on the operation of the pacemaker while it is turned on.
Protective gear must be worn
Put on protective gear such as protective gloves, long-
sleeve jacket, leather
apron, etc. Surface flash and expulsion can burn the skin if they touch the skin.
Wear protective glasses
If you look at the surface flash and expulsion directly during welding, your eyes
may be damaged. If any surface flash and expulsion gets in your eyes, you may
lose your eyesight.
WARNING
！

MEA-100B
1. Special Precautions
1-3
Do not splash water on the Power Supply
Water splashed over the electric parts can cause electric shock and short
circuits.
Use proper tools (wire strippers, pressure wire connectors, etc) for
termination of the connecting cables
Do not cut the conductor of wire. A flaw on it can cause fire and electric shock.
Install the Power Supply on firm and level surface
If the Power Supply falls or drops, injury may result.
Do not place a water container on the Power Supply
If water spills, insulation will deteriorate, and this may cause electric leak and
fire.
Keep combustible matter away from the welding machine
Surface flash and expulsion can ignite combustible matter. If it is impossible to
remove all combustible matter, cover them with non-combustible material.
Do not cover the Power Supply with a blanket, cloth, etc.
If such a cover is used, it may be overheated and burn.
Do not use this Power Supply for purposes other than welding
Use of this Power Supply in a manner other than specified can cause electric
shock and fire.
Use ear protectors
Loud noises can damage hearing.
Keep a fire extinguisher nearby
Keep a fire extinguisher in the welding shop in case of fire.
Maintain and inspect the Power Supply periodically
Maintain and inspect the Power Supply periodically, and repair any damage
nearby before starting operation.
CAUTION
！

MEA-100B
1. Special Precautions
1-4
(2) Precautions for Handling
■When transporting or moving the Power Supply, do not lay it down. Also, handle
the Power Supply with care so as not to make an impact such as drop on it.
■Install this Welding Power Supply on a firm, level, horizontal surface. If it is
inclined, malfunction may result.
■Do not install this Welding Power Supply in the following:
・Damp places where humidity is higher than 90%,
・Hot or cold places where temperatures are above 45°C or below 0°C,
・Places near a high noise source,
・Places where chemicals are handled,
・Places where water will be condensed,
・Dusty places, and
・Places at an altitude above 1000 meters.
■Clean the outside of the Welding Power Supply with a soft, dry cloth or one wet
with a little water. If it is very dirty, use diluted neutral detergent or alcohol. Do not
use paint thinner, benzine, etc., since they can discolor or deform the Welding
Power Supply.
■Do not put a screw, a coin, etc., in the Welding Power Supply, since they can
cause a malfunction.
■Operate the Welding Power Supply according to the method described in this
operation manual.
■Operate the switches and buttons carefully by hand. If they are operated roughly
or with the tip of a screwdriver, a pen, etc., this will cause malfunction or damage.
■Operate the switches and buttons one at a time. If two or more of them are
operated at a time, the Power Supply may have trouble or may be broken.
■The Power Supply is not equipped with auxiliary power such as an outlet for
lighting.
■The welding head, the welding transformer, the secondary cable for connecting
the welding head with the welding transformer, and the connecting cable for
connecting the welding transformer with the Power Supply are separately needed
to use the Power Supply.
■The I/O signal line to start the Power Supply is not attached. Press the crimp-on
terminal (terminal block screw, M3) for wiring.
■The cable to supply power to the Power Supply is not attached. Press the
crimp-on terminal (terminal block screw, M6) for wiring. For the cable to use, see
3. (2) Option.
■The cable to connect between the welding transformer and the Power Supply is
not attached. Press the crimp-on terminal (terminal block screw, M6) for wiring.
For the cable to use, see 3. (2) Option.

MEA-100B
1. Special Precautions
1-5
(3) On Disposal
This product incorporates parts containing gallium arsenide (GaAs). At the time of
disposal, separate it from general industrial waste or domestic waste and carry out
the disposal in accordance with applicable laws and regulations.

MEA-100B
2. Features
2-1
2. Features
The MEA-100B is a single-phase AC resistance-welding power supply designed for fine
spot welding. The control method can be selected from secondary constant-current
control and power supply voltage fluctuation compensation control. The MEA-100B
realizes high quality welding, so it is suitable for small size precise welding.
1Four welding current control systems are currently available for the MEA-100B. Select
the control system best suited to the particular workpiece.
[Multi-Cycle Welding + Secondary Constant-Current Control]
Returns welding current feedback to the control at each half-cycle, using the toroidal
coil. The control makes adjustments based on this feedback to maintain a constant
current, compensating for voltage fluctuation and workpiece load variances.
[Multi-Cycle Welding + Power Supply Voltage Fluctuation Compensation
Control]
Monitors and compensates for power supply voltage fluctuation to maintain a constant
current. Compensation begins from the first half-cycle.
[Single-Cycle Welding + Power Supply Voltage Fluctuation Compensation
Control]
Permits the flow of one cycle current only. You can set the first half wave and the
second half wave separately. Compensation begins with the first half wave.
[Half-Cycle Welding + Power Supply Voltage Fluctuation Compensation Control]
Permits the flow of one half-cycle current only. The direction of the current is inverted
with each current flow.
2Current Monitor Function Provided
This function allows you to check the current at every welding. Also, a fault message is
displayed when the current range has been preset and the current is out of range.
3Automatic Maximum Current Setting
The highest optimum current is automatically set through test welding. (This setting is
then retained in memory even when the power supply is turned off. However, it is reset
when another test welding is performed.)

MEA-100B
3. Packaging
3-1
3. Packaging
(1) Accessory
Item Model No. Q’ty
Operation manual AS1200089(OM1200069,OM1200070) 1
(2) Options
Item
Model No.
Description
Item No.
Toroidal coil MB-35E-00
Required for secondary constant-
current control or current
monitoring.
1001283
Connecting
cable
(Power cable/
Output cable)
PK-03294-001
(2 m)
Used to supply power to the MEA-
100B and connect the MEA-100B
to the welding transformer.
Note: If you provide a cable, select
a cable with the following
specification.
Rated voltage............ 600 V min.
Number of cores........ 3
Cross section.............5.5 mm2 min.
Protection conductor..5.5 mm2 min.
Cable diameter.......... 18 mm max.
1001699
PK-03294-002
(5 m) 1001712
PK-03294-003
(10 m) 1001713
For China
PK-03887-001
(2 m)
1001745
PK-03887-002
(5 m)
1001746
PK-03887-003
(10 m) 1001747
Start cable
SK-03273-001
(2 m)
Connects the MEA-100B to the
welding head.
1001698
SK-03273-002 (5 m)
1001710
SK-03273-003
(10 m) 1001711

MEA-100B
4. Name and Functions of Each Section
4-1
4. Name and Functions of Each Section
(1) Front Panel
Display Panel
This LCD panel is used to monitor various MEA-100B functions.
Indicates various settings and weld measurement results.
[READY] Lamp
Lights when the MEA-100B is ready to supply a welding current.
This lamp is synchronized with Terminal 12 ([READY]) of the I/O Terminal
Strip on the rear panel.
This lamp lights when the following conditions are met:
The [WELD] lamp on the panel is on.
The [WELD ON/OFF] signal of the I/O Terminal Strip on the rear panel is
on.
No trouble has occurred.
WELD
MENU
RESET
READY START GOOD CAUTION N.G
SET 1 SET 2
SCHEDULE NO. CURR.1 CURR.2 PULSATION SOLENOID
UP2
10 0 10 00 0 00 0 10
KEY LOCK
DWNW2SQ UP1 W1 CO HLD
10 0.9 5 kA 1.00 kA 0 0
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