Amada MA-627A User manual

Y02M0086E-09
OPERATION MANUAL
PROGRAM UNIT
MA-627A

MA-627A
1
Thank you for purchasing our Program Unit MA-627A.
Before using, read this operation manual; after reading, save it in a safe place where you
can easily access.
Contents
1. Special Precautions........................................ 1-1–1-4
2. Introduction .................................................... 2-1
3. Name and Functions of Each Part .................3-1
4. Explanation of Operation................................4-1–4-5
5. Replacement of Battery..................................5-1–5-2
6. Specifications ................................................. 6-1
7. Connector Specifications................................ 7-1
8. Outline Drawing..............................................8-1

MA-627A
1. Special Precautions
1-1
Denotes operations and practices that
may result in personal injury or damage
to the Equipment, if not correctly followed.
1. Special Precautions
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.
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.
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, WARNING
or CAUTION to the operator.
Do not touch the inside of the Equipment unnecessarily
Since very high voltages are applied to the interior of this Equipment, it is
dangerous to touch it unnecessarily. Do not open the cover for the purposes
other than replacing the battery. When trouble occurs and inspection or repair is
needed, consult us.
Never disassemble, repair or modify the Equipment
These actions can cause electric shock and fire. Do not do anything other than
the maintenance described in the operation manual.
Never burn, destroy, cut, crush or chemically decompose the Equipment
This product incorporates parts containing gallium arsenide (GaAs).
DANGER
！
W
ARNING
！
CAUTION
！
DANGER
！

MA-627A
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.
Do not splash water on the Equipment
Water splashed over the electric parts can cause electric shock and short
circuits.
Apply the specified 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 connecting cables
Do not tread on, twist or tense any cable. The connecting cables may be
broken, and that can cause electric shock and fire. When repair or
replacement is needed, consult us.
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 flash and expulsion directly during welding, your eyes may
be damaged. If any surface flash and expulsion gets in your eye, you may
lose your eyesight.
WARNING
！

MA-627A
1. Special Precautions
1-3
Do not place a water container on the Equipment
If water spills, insulation will deteriorate, and this may cause electric leak and
fire.
Keep combustible matter away from the Equipment
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 Equipment with a blanket, cloth, etc.
If such a cover is used, it may be overheated and burn.
Do not use this Equipment for purposes other than welding
Use of this Equipment 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 Equipment periodically
Maintain and inspect the Equipment periodically, and repair any damage
nearby before starting operation.
CAUTION
！

MA-627A
1. Special Precautions
1-4
Precautions for Handling
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.
Do not use this Equipment in the following places:
damp places (where humidity is higher than 90%), places where chemicals are
handled, dusty places, places near a high noise source, places where water will
be condensed, places where the Equipment may be subjected to vibration or
shock, hot or cold places (where temperatures is above 40°C or below 0°C),
and places at an altitude above 1000 meters.
Clean the outside of the Equipment 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 Equipment.
Do not put a screw, a coin, etc., in the Equipment, since they can cause a
malfunction.
Operate the Equipment 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 by one. If two or more are operated at a
time, the Equipment may malfunction or be damaged.
When transporting or moving the Equipment, do not lay it down. Also, handle the
Equipment with care so as not to make an impact such as drop on it.

MA-627A
2. Introduction
2-1
2. Introduction
The MA-627A is a program unit which is connected to our products and used to set the
operating condition, etc. of those products.
The MA-627A can be connected to any product that is applicable to the MA-627A; it can
be used by rewriting the contents of the battery-backed up memory.
CAUTION
Normally, the equipment can be used as a program unit just after the power is
turned on. However, it takes several minutes to rewrite the contents of the
memory in the following cases.
•When the equipment is turned on for the first time after purchase.
•When the backup battery is dead.
•When the model name and program version of equipment which have been
stored in the MA-627A differ from those of the equipment connected to the
MA-627A and when rewriting the MA-627A memory (see p.4-1, ○
1).

MA-627A
3. Name and Functions of Each Section
3-1
3. Name and Functions of Each Part
MA - 6 2 7A
ON
ENTER
MENU
OFF
RESET
TROUBLE
CURSOR
①②③④⑤⑥
①[TROUBLE RESET] Key
Pressing this key after the cause of trouble is eliminated while an error message
is indicated turns off the error massage.
②[CURSOR] Keys
Pressing these keys moves the cursor to up, down, to the right or to the left to
select an item.
③[+ON/-OFF] Key
Pressing this key changes over the value of the currently selected items or
changes that value. Pressing the +ON side selects YES, and pressing the -OFF
side selects NO.
④[ENTER] Key
Pressing this key enters the data set with the [+ON/-OFF] key in the product
connected to the MA-627A.
The product connected to the MA-627A does not recognize the data settings until
this key is pressed. After setting the data, be sure to press this key to enter the
data.
⑤[MENU] Key
Pressing this key changes the screen when there are two or more screens.
⑥Connector
Receives the circuit cable. The other end of the cable must be connected to the
[PROGRAM UNIT] connector of the product to be used with the equipment.

MA-627A
4. Explanation of Operation
4-1
4. Explanation of Operation
Normally, the MA-627A can be used as a program unit of the connected product just after
the power is turned on.
For how to operate, see the Operation Manual attached to the connected product.
In the following cases, however, the MA-627A works as a program unit several minutes
after being turned on because of rewriting the contents of the memory.
When the equipment is turned on for the first time after purchase (the test program
for check is stored), or the equipment connected to the unit is changed.
(See ○
1[OVERWRITE] screen)
When the backup battery dies.
(See ○
2[DOWNLOAD] screen)
If the connected product is not applicable to the MA-627A or the communication line
is broken or is not connected properly.
(See ○
3[COMMUNICATION LINE ERROR] screen)
When you want to adjust the contrast of screen.
(See ○
4[OPTION] screen)
CAUTION
Setting and change for each item cannot be done from the start signal receiving
to the weld sequence end.
If the setting is done during the weld sequence, the following screen appears.
Press ①[TROUBLE RESET] key.
***** indicates the model name of welding power supply connecting to MA-627A.
***** IS BUSY OR NOT CONNECTED
Please RESET key in

MA-627A
4. Explanation of Operation
4-2
ExplanationofScreens
Hatched letters (000)An item for which a value must be input or
ON/OFF is set.
Outline letters () An item which is indicated on the screen
but cannot be changed by any operation.
①[OVERWRITE] screen
This screen appears when the model name and program version of the product
stored in the MA-627A are different from the model name and program version of the
connected product.
i)
The following screen will appear when the MA-627A is connected.
Select NO for OVERWRITE, then press the [ENTER] key. You can use it, now.
CONNECT MEMORY
[] [ ]
[] [ ]
OVER WRITE : NO
ii)
When the screen with “CONNECT IMPOSSIBLE!!” appears, you must select
YES for OVERWRITE with [+ON] key, then press [ENTER] key to rewrite
memory. Now, you can use the MA-627A.
CONNECT MEMORY
[] [ ]
[] [ ]
CONNECT IMPOSSIBLE!! OVER WRITE : YES
Letters used in the following explanation
When the product is compatible with the model name and program version of
the
p
roduct stored in the MA-627A.
When the product is not compatible with the model name and program version
o
f
the
p
roduct stored in the MA-627A.

MA-627A
4. Explanation of Operation
4-3
②[DOWNLOAD] screen
This screen is used when the MA-627A downloads the program from a product
connected to the MA-627A. When downloading, select YES for DOWNLOAD with
the [+ON] key, then press the [ENTER] key.
CONNECT MEMORY
[] BACK UP ERASED
[ ]
DOWN LOAD : YES
③[COMMUNICATION LINE ERROR] screen
If the following screen appears, check:
(i) the connected product for fault, and
(ii) the circuit cable for broken wire and for wrong connection.
!!!TROUBLE!!!
COMMUNICATION LINE ERROR
④[OPTION] screen
This screen adjusts contrast of the MA-627A screen after program has been
downloaded. (See ○
2[DOWNLOAD] screen)
-OPTION
4 (T O--->7 D)
4
5
OFF

MA-627A
4. Explanation of Operation
4-4
To go to the [OPTION] screen,
Download the program from the equipment for which the MA-627A
accommodates.
Go to the [MENU] screen.
Press [+ON] key five times.
Press [-OFF] key one time.
•LCD CONTRAST
Adjust the screen thickness.
The setting range is 0 to 7.
The greater value makes the screen thicker.
When program is downloaded, the LCD CONTRAST is set randomly.
If the screen is extremely hard to view:
Press [MENU] key once.
Press [+ON] and [-OFF] keys simultaneously for at least
4 seconds.
Now, LCD CONTRAST is set to the initial setting. (You don’t need to
go to the [OPTION] screen)
•CURSOR BLINK OFF/ON TIME
Sets the timing of the cursor blinking.
When the cursor is not easy to view, change the value to adjust.
•DEFAULT
Returns each item on the [OPTION] screen to the initial value when ON is
selected.

(1)Check product
connected.
“CONNECT IMPOSSIBLE!!” blinks on ①-ii [OVERWRITE] screen.
(2)Check commu-
nication cable.
①-i [OVERWRITE]screen ①-ii [OVERWRITE]screen ②[DOWNLOAD]screen
③[
COMMUNICATION LINE ERROR
]
screen
CONNECT MEMORY Model name and Model name and program version of program version connected product stored in memory
OVERWRITE : NO
CONNECT MEMORY Model name and Model name and
program version of program version connected product stored in memory
CONNECT IMPOSSIBLE!! OVERWRITE:NO
CONNECT MEMORY Model name and
program version of
BACKUP ERASED
connected product DOWNLOAD : NO
COMMUNICATION LINE ERROR
Wait for several minutes
to overwrite memory to support product connected.
POWER ON
Memory lost?
YES
NO
When model name is different, or version is not compatible even if model name is same.
When purchased, or model name or program version of the connected is changed.
Backup battery is dead.
The MA-627A does not support the connected product, or communication cable is broken, or wrong connection is made.
M
o
d
e
l
name
and program version are same as those in MA-627A memory?
YES
YES
S
ame mo
d
e
l
name
and different program version, bbut compatible?
NO
YES
Eraseforme
r
data and write program version of connected product? OVERWRITE ?
Eraseforme
r
data and write program to support newly selected product? OVERWRITE?
Memorylost. Make it support the currently connected product? DOWNLOAD?
NO
The MA-627A is now working as program unit of product connected. See operation manual of the connected product.
YES
Unusable
YES
Proper product
connected?
NO
YES
NO
NO
NO
Flowchart of O
p
eration after Power is Turned on
4. Explanation of Operation
4-5

MA-627A
5. Replacement of Battery
5-1
5. Replacement of Battery
The life of the lithium battery installed in the Equipment is five years. Replace the
battery CR 2450 before it is dead, observing the following procedures.
DANGER
When replacing the lithium battery, be sure to turn off the
main power, so as not to get an electric shock.
CAUTION
When replacing the battery, work carefully to prevent damage to the
printed circuit board and parts mounted on it.
When the battery is replaced, the contents of the memory may be
rewritten. Accordingly, be sure to download before starting the
operation,
①Remove four screws on the top and bottom.
②Remove the rear cover, then four
screws at the corners of the PC
board.
③Turn over the PC board. Take care
that you don’t break the harness
which connects the board and the
unit body.
！
①
Remove 4 screws
on top and bottom
.
②
Remove 4 mounting
screws for PC board
.
Harness

MA-627A
5. Replacement of Battery
5-2
④Components will appear (Right).
Press the lug in the direction
indicated by the arrow.
⑤The lithium battery will pop out;
pick it out.
⑥Place a new battery in the battery
holder with its plus (+) sign upward.
Press and secure till it clicks.
⑦Re-assemble the PC Board into the unit body:
Align the three connectors (shaded portions in the drawing below) with the pins on
the PC board and press them carefully, taking great care that you don’t bend, break
the pin.
Match the receptacle holes, EL and POWER, on the left-most and smallest
connector in the drawing below, with the pins extending from the unit body.
Check a good connection of these connectors and pins, then secure the four
corners of the board with the screws.
⑧Re-place the rear cover; secure it with four screws on the top and bottom.
④
Press the lug
in the arrow
directon.
⑤
The battery
pops out
.
MA - 627A PC Board
Harness
POWEREL

MA-627A
6. Specifications
6-1
6. Specifications
Power supply voltage 24V DC (supplied from the welding power supply)
Display Dot-matrix LCD panel (with backlight)
Operation
environment
Temperature 0°–40°C, Humidity 90% or less (Dew
condensation not allowed), Altitude 1000 meters or lower
Storage environment Temperature -10°–55°C and dew condensation not allowed
Case protection IP40
Outline dimensions 115
mm (H) × 195 mm (W) × 35 mm (D)
(Not including projections)
Mass Approx. 680g

MA-627A
7. Connector Specifications
7-1
7. Connector Specifications
A: RD + / SD +
B: RD – / SD –
C: NC
D: +24
V DC IN supplied from
the connected product
(50
mA current consumption)
E: 0
V
F: Shield
G: NC
ＡＦ
Ｇ ＢＥ
ＣＤ
CAUTION
Use the cable supplied to our product or one
purchased from us.
！

MA-627A
8. Outline Drawing
8-1
8. Outline Drawing
(Unit in mm)
Mass: 680
g
33.5
195
ON
OFF
CURSOR
TROUBLE
RESET ENTER
MENU
11513
35