NADEX MDM22-M01A User manual

Handy Nadescorder
MDM22 -M01A
Instruction Manual

----- Important -----
Please read this instruction manual before starting to use your device. You may risk accidents
if you use it without observing the instructions in the manual.
Safety instructions in this manual are presented with the following marks according to the
degree and kind of danger involved:
DANGER
Failure to observe the warning with this mark greatly increases the possibilities of accidents
that can result in death or serious injury.
WARNING
Failure to observe the warning with this mark may present the possibilities of accidents that
can result in death or serious injury.
CAUTION
Failure to observe the caution with this mark may result in injuries or physical damage.
This mark indicates that improper handling may create shock hazards.
This mark indicates that improper handling may lead to troubles caused by poisonous
substance.
This mark indicates that improper handling may cause injury or other troubles.
This mark indicates that improper handling may create fire hazards
This mark indicates that improper handling may lead to an explosion.
This mark indicates that improper handling may lead to troubles due to high temperatures.
This mark indicates that use in a shower or outdoor use in the rain is forbidden.
This mark indicates that disassembly or remodeling is forbidden.
This mark indicates that the power plug must be disconnected from the wall outlet.
This mark indicates cautions other than the above.

Read First For Your Safety
In case you use it in order to have you use it safely, be careful of the following things.
Failure to observe the safety precautions can cause accidents that may damage the
equipment or inflict injuries or death on the user or people around.
DANGER
1. Avoid damaging cords and cables by leading them under the machine or getting
them caught between objects. Otherwise the electric wire may short-circuit to
cause electric shock, leak or fire.
When disconnecting a cord or cable, be sure to do so by holding the plug or
connector. Otherwise the cord or cable may have a break, which will eventually
develop into functional failure, overheating or fire.
2. Be sure to use the charging AC adapter supplied with the equipment. Use of
another AC adapter may not only lead to failure of the equipment but also
cause fire or explosion due to abnormal heating.
3. Take special care during charging when both the equipment and the AC adapter
heat up. Never place paper or cloth on the equipment and AC adapter during
charging. To prevent fire, be sure to charge the equipment in a cool, well-ventilated
place.

WARNING
1. Give adequate care to safety in wiring the cables. Be sure to install them where
they will not interfere with robot operation or the movement of workers.
2. Be sure to use the cables supplied with the equipment for connection with other
equipment such as a printer. Otherwise faulty operation or functional failure may
occur.
3. For use and storage of this equipment, avoid locations where it can be exposed to
sunshine, dust, rain water or excessive humidity.
4. Place the equipment on a stable floor. Locating it at an elevated or unstable place
can result in injuries from the drop of the equipment.
5. A battery pack should not carry out decomposition and reconstruction.
If it decomposes and converts, it may generate heat, ignite or explode.
6. Please do not add a strong shock to a battery pack. Moreover, please charge by the
method of handling description specification.
If a shock is added or it charges by methods other than specification, it may generate
heat, ignite or explode.
7. Please do not put in a battery pack into fire.
If it puts in into fire or heats, it may explode or explode.
8. Changes or modifications not expressly approved by the manufacturer for
compliance could void the user's authority to operate the equipment.
9. In order to comply with FCC radio-friquency radiation exposure guidelines for an
uncontrolled exposure, this device and its antenna must not be co-located or
operating in conjunction with any other antenna or transmitter.
10. The term "IC:" before the radio certification number only signifies that Industry
Canada technical specifications were met.
"Operation of this device is subject to the following two conditions: (1) this device
may not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device."
"The installer of this radio equipment must ensure that the antenna is located or
pointed such that it does not emit RF field in excess of Health Canada limits for
the general population; consult Safety Code 6, obtainable from Health Canada's
website www.hc-sc.gc.ca/rpb"

CAUTION
1. The product that you have purchased contain a rechargeble battery.
The battery is recyclable. At the end of its useful life, under various state and local
laws, it may be illegal to dispose of this battery into the municipal waste stream.
Check with your local solid waste officials for details in your area for recycling
options or proper disposal.
So please consult your NADEX dealer about the way you dispose of used batteries.
2. For a long period of disuse, store the equipment with the charging AC adapter and
other appendent units disconnected from it.
3. Never engage in disassembly, remodeling or unwarranted adjustment of this
equipment. Tinkering with this equipment may cause equipment failure or
malfunction.
4. Do not use a volatile fluid, such as benzene or thinner, when wiping the equipment
clean. Use of such a fluid can cause the deformation or discoloration of the casing.
5. Do not use this equipment for purposes other than as a welding current meter.
NADEX does not hold itself responsible for any equipment failure resulting from
use for purposes other than specified.

Contents
1. Outline ........................................................................................ 1
2. Names and Functions of Components ........................................ 2
3. Composition................................................................................ 4
4. Measuring Method...................................................................... 5
4-1. Measurement Operation Procedure............................................................... 5
4-2. The display of a liquid crystal display............................................................ 7
4-3. Notes on the Use of CT Coil............................................................................ 9
4-4. Note on the Use of Tip Voltage Detection Cable ......................................... 10
5. Selection of Menu Function ..................................................... 11
5-1. How to select................................................................................................... 11
5-2. Selection Menu Items..................................................................................... 11
6. Communication Method ........................................................... 16
6-1. In the Case of USB......................................................................................... 16
6-2. In the case of radio communications (Bluetooth) ....................................... 16
7. How to Charge .......................................................................... 18
8. Error Display ............................................................................ 19
9. Troubleshooting........................................................................ 20
10. Specification ........................................................................... 22

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Outline
1. Outline
This machine is a welding current meter capable of measuring the welding current, welding cycle and
tip voltage of resistance welders and displaying measured values on the liquid crystal display. The
device presents the following features:
1) The equipment is small and lightweight, so that it can be easily carried around within the factory
premises.
2) A large capacity memory allows storage of up to 10000 average data, 20 each cycle / each msec
data and 1 newest waveform data.
3) Data is transmitted to a personal computer and data processing is possible with a personal computer.
(The exclusive software for personal computers is required)
4) Since the charge battery is built in, it is cordless and can be used.
5) Collection of the data in remoteness is possible by radio communications (Bluetooth).
6) The connectors for the cables used are all easy-to-use "one-touch" connectors.
7) There are two measuring ranges, namely, Lo:2.50 to 19.99kA and 10.00 to 49.99kA. You can
select a range best suited to the current levels you are going to measure.
8) The WELD lamp lights up when welding is being detected. Therefore, measuring condition can be
monitored even when you are away from the welding machine.
9) The equipment can be used not only with AC welder but also with DC welder, inverter controlled
welder, and AC inverter controlled welder.
10) Current consumption is minimized by the auto power-off function, in which power is turned off
automatically when there is no key operation, welding.
( [ 10 minutes ], [ 30 minutes ], [ 60 minutes ], and auto-power-off function (OFF))

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Names and Functions of ComponentsNames and Functions of Components
Names and Functions of ComponentsNames and Functions of Components
Names and Functions of Components
2. Names and Functions of Components
(5) (6)
(1)
(2)
(3)
(4)
(7)(8)
(9)
(10)
(11)
CHARGE
WELD
HandyNadescorder
POWER
SEL.MENU
DISP

3 / 24
Names and Functions of ComponentsNames and Functions of Components
Names and Functions of ComponentsNames and Functions of Components
Names and Functions of Components
(1) [POWER] key
Turns power on and off.
(2) [DISP] key
Operate this key when changing displays or when switching from menu mode to measurement
mode.
(3) [MENU] key
Operate this key when changing menu items or when switching from measurement mode to menu
mode.
(4) [SEL.] key
Use this key for setting change of menu item.
The lighting for LCD turns on at the time of a measured value display.
(5) The connector for current measurement
Connect the appendant CT cable.
(6) The connector of voltage between tips
Connect the appendant tip voltage cable.
(7) Liquid crystal display
Measured value is displayed in measurement mode.
The contents of a menu are displayed in menu mode.
(8) WELD lamp
Lights up when welding is being done and goes out when it is completed.
(9) CHARGE lamp
Lights up during charging. 7. Refer to the Charge Method.
(10) Power supply jack
Connect the supplied AC adapter when charging.
(11) USB connector
Connect the USB cable when performing cable communications.

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Composition
3. Composition
Radio communications
(Bluetooth)
Radio communications
(Bluetooth) or USB
PDA PC
CHARGE
CHARGECHARGE
CHARGE
WELD
WELDWELD
WELD
HandyNadescorder POWER
SEL.
SEL.SEL.
SEL.MENU
MENUMENU
MENU
DISP
DISPDISP
DISP
Handy Nadescorder
CT
Tip voltage detection cable
welding machine

5 / 24
Mesurement Method
4. Measuring Method
4-1. Measurement Operation Procedure
(1) Attach the supplied CT coil to the secondary conductor of the welding machine, and connect the
cable to the connector on this device.
(2) Turn on power by operating the [POWER] key.
(Initial screen)
It is in the state which can be measured.
(3) Refer to 5. Selection of Menu Function when measuring conditions must be set or changed.
(4) In order to measure after a setting end, please press the [DISP] key and make it an initial screen.
(5) When you measure the tips voltage , please connect the tip voltage detection cable.
Notes on measurement
- If you connect the connector with the power on, the trigger may work and a
measurement will be made. But the data from this measurement are invalid.
Be sure therefore to turn off power before connecting or disconnecting the
connector.
- Since it will be regarded as a weld end if it becomes 50% of peak
current in a measurement period when measuring an inverter welding machine
etc., a measurement cycle may become long.
Moreover, measured value will become small if weld which became long is
included in measurement.
0 . 0 C Y Ak000 .
mesurementtime
welding time
peak current
weld end
detection level
50%

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Mesurement Method
In the case of the following figure, regular current can be measured, supposing
itsetsastartcycleas1.5cyc and sets anend cycleas 10.0cycforthemeasurement
section.
-When thecrest value ofmeasured currentis extremely large, current overflow
may occur even if the current is within the measuring range.
- When measuring an inverter welding machine etc., and the load by the side of
secondary is extremely large, it may be unable to measure.
- Measurement of the tip voltage cannot be performed only by the tip voltage
detection cable. Please also connect CT cable simultaneously.
- When you connect the tip voltage detection cable, please do not connect AC
adapter and a USB cable. It cannot measure correctly.
-When it becomes an unusual welding form in AC measurement, it cannot
measure correctly.
-Measurement data may be unable to be saved when a measurement interval
is very short.
- Tip voltage of AC inverter welding machine cannot be measured.
- In DC measurement, the tip voltage cannot be measured correctly in the
sections (positive going transition of current, negative going transition of current,
a rise slope, down slope, etc.) which have change of current in a half-cycle.
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.510.0
startcycle end cycle
mesurementtime
welding time
11.010.5

7 / 24
Mesurement Method
4-2. The display of a liquid crystal display
If welding is performed, measured value will be displayed as follows. Moreover, the switch of a
display can be performed by the [DISP] key.
Whenever it presses the [DISP] key, switching display of weld time , weld current , tip voltage , weld
counter , and remain of memory.
(Example of a display)
The following is displayed when ms is chosen.
weld current
weld time(cyc)
voltage between tips
weld counter
remainder of memory
R E M A I N M . 1 0 0 0 0
1 5 . 0 C Y 1 1 . 5 0 k A
V21.0
W . C O U N T 3
weld currentweld time(ms)
0 m s52 1 1 . 5 0 k A

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Mesurement Method
The display of a menu function is displayed as follows.
Whenever it presses the [MENU] key, an item changes.
(Example of a display)
A U T O O F F F FO
W E L D M E T H O D A C
R A N G E L o
I M P U L S E 0
U N I T c y c
S T A R T C Y5.0
E N D 9 9 . 5C Y
S A V E MO D E O V E R
C L E A R M E M .
C L E A R C N T .
F R E Q U E N C Y H z06

9 / 24
Mesurement Method
4-3. Notes on the Use of CT Coil
- Attach the secondary conductor to the position of the CT coil. Adjustments have been made so that
correct values can be obtained when measured in this position.
-Please fix to secondary conductor so that CT does not move during measurement.
-In case you attach CT, please insert the tip of CT firmly to the back of a case.
Danger
- Use extreme caution not to hurt your hand when hooking up the CT coil to the
gun for the welding machine.
secondary conductor

10 / 24
Mesurement Method
4-4. Note on the Use of Tip Voltage Detection Cable
Since induced electromotive force by welding current generates induction by the tip voltage detection
cable when measuring the tip voltage, as shown in the following figure, please make connection of the
tipvoltagedetectioncable.Whenespeciallyaleadismade to gather and is attached, induced electromotive
force becomes small and the tip voltage can measure correctly.
Tip voltage detection cable
CT coil

11 / 24
Selection of Menu Function
5. Selection of Menu Function
5-1. How to select
(1) Press the [MENU] key to switch measuring mode to menu mode, and the following display will
appear:
(Example of a display)
(2) To change the item, press the [MENU] key to go on to the next item.
(3) After selecting the item to be set, move the cursor to the desired setting value by the [SEL.] key.
(4) For further setting of other items, repeat (2) to (3).
(5) On completion of setting all the necessary items, press the [DISP] key to switch menu mode to
measurement mode and start measurement. It cannot measure in menu mode.
5-2. Selection Menu Items
(1) Selection of welding method
There are two welding methods to select from, namely, AC welding, DC welding .
AC : When measurement is made with a single-phase AC welder.
DC :When measurement is made with inverter controlled welder and AC inverter controlled welder.
(Example of a display)
Caution
- The tip voltage of AC inverter welding machine cannot be measured.
(2) Selection of frequency
The local power frequency must be selected.
There are two frequency to select from, namely, 50Hz and 60Hz .
(Example of a display)
Caution
- When this setup is changed, all the measurement data memorized by the
memory is eliminated
- In cyc measurement, any frequency other than 50Hz and 60Hz cannot be
measured.
W E L D M E T H O D A C
F R E Q U E N C Y H z06
WE L D ME T H O D D C

12 / 24
Selection of Menu Function
(3) Selection of Unit of measurement time
There are two unit of measurement time to select from, namely, cyc and ms.
ms can set up only at the time of DC welding.
(Example of a display)
Caution
- When this setup is changed, all the measurement data memorized by the
memory is eliminated
(4) Setting for impulse No.
Setting ranges are 0-9.
0 :measures and displays all welding.
1-9 :measure and display only the data of the specified number of impulses.
(Example of a display)
At the time of cycle measurement, it is regarded as an impulse by 1 or more cycle pause, and it is
regarded as the welding end by 31 or more cycle pause.
At the time of msec measurement, it is regarded as an impulse by 13 or more msec pause, and it is
regarded as the welding end by 101 or more ms pause.
If impulse No. is set as 2 in the case of the following figure, the 2nd step of welding will be
measured. When there is no 31 or more cycles welding after a welding pause, a series of welding
judge it as an end. Moreover, when a setup number of welding cannot be found, an impulse setting
error is outputted.
I M P U L S E 0
U N I T c y c
1st
pause time
1or more cyc
30 or les cyc
weld end
recognition time
31 or more cyc
1st 2nd 3rd
pause time
1or more cyc
30 or les cyc

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Selection of Menu Function
(5) Selection of measuring range
There are two measuring range to select from, namely, Lo and Hi .
Lo : 2.50kA to 19.99kA
Hi : 10.00kA to 49.99kA
(Example of a display)
Caution
- If average data is measurement within the limits even if the current value of
each cycle is outside the measurement range, it can measure.
(6) Setting of measurement start cycle
A measurement start cycle is set up.
cyc: It can set up in the range of 0.5 - 9.5 cyc.
ms : It can set up in the range for 1 - 199ms. (at the time of DC welding)
(Example of a display)
When the up slope etc. is included in welding current control, steady-state current can be measured
by specifying a measurement start cycle. In the case of a figure, a measurement start cycle is set as
2.5cyc.
R A N G E L o
S T A R T C Y5.2
Steady-state current
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.00.5

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Selection of Menu Function
(7) Setting of measurement end cycle
cyc : It can set up in the range of 0.5 - 99.5 cyc.
ms : It can set up in the range for 1 - 1999ms.
(Example of a display)
When the down slope etc. is included in welding current control, steady-state current can be
measured by specifying a measurement end cycle. In the case of a figure, a measurement end cycle
is set as 10.0cyc.
(8) Setting of the data save method
The data saved is
- Average data : 10000 data
- Each cycle/msec data : 20 data
- Wave data : 1 newest data
OVER: The newest welding point in the range of the number of the maximum storage is saved.
LOCK: It is not saved after storage and it to the number of the maximum storage .
(Example of a display)
Caution
- Waveform data, this setup is invalid. The one newest data is saved.
E N D 9 9 . 5C Y
S A V E MO D E O V E R
12.010.5 11.06.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 11.5
Steady-state current