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Welding power supply

Measurement devices for resistance welding

Welding heads

Beautiful finish with micro-welding because of a short welding time.

 Transistor type welding power supply

MDA-8000B, MDA-4000B, MDA-1000B(Standard type)
MDC-2000B(2-channel interchangeable type)
Transistor type welding power supply
 

Fast current rises.

Since the welding current rises 4.5 times faster than that with the *conventional welders, high quality welding can be accomplished in a short period of time on small work pieces.
* Compared with the conventional model MD-1500E

No welding transformer needed

The welding current is directly controlled with fast switching by transistor, so no welding transformer is required.

 

Built-in pre-check function

Applying current on the workpiece before the main current, it is possible to judge whether or not there is a workpiece set on the electrodes, and to evaluate the status of workpiece.

Built-in pre-check function image

2-channel type

With this type, it can reduce the cast and save some spaces for time difference welding.

 

 Transistor type welding power supply

MDB-4000B, MDB-2000(Polarity interchangeable type)
 

Three control types to choose from

You can choose from three types of control - "constant current," "constant voltage," or "constant voltage and current" - to suit the workpieces.

Interchangeable polarity type

This can eliminate the Peltier effect (polarity effect) and provide uniform nugget diameters on series welding.

 
Features three types of control: constant current, constant voltage, and constant current and voltage
 
Polarity switching type and Two-channel type features

The schedules can be set easily following the display. The schedules settings can be confirmed on the waveform displayed.
 

Specifications

Model name
MDA-8000B
MDA-4000B
MDA-1000B
Type Standard type
Power supply voltage

Single-phase, 100 to 120VAC or single-phase,
200 to 240VAC 50/60Hz
Maximum power consumption 350W 300W 300W
Maximum welding current 9990A 5000A 1500A
Maximum welding voltage 30V
Control method Constant current control / constant voltage control / constant current and voltage control
Timer setting
(31 schedules)		 Squeeze 000 - 999ms /
000 - 999ms X 10		 000 - 999ms
Precheck welding 0.00 - 1.00ms
Precheck evaluation time 2ms (Fixed)
Upslope 0.00 - 9.99ms (Included in weld) *1 (Included in weld 1) *2
Weld (1-step welding mode)
/ Weld 1,2
(2-step welding mode)		 0.00 - 9.99ms
Cool (for 2-step welding mode only) 0.00 - 9.99ms
Downslope 0.00 - 9.99ms (Included in weld) *1 (Included in weld 2) *2
Hold 000 - 999ms
Current setting time 000 - 999A (1A unit Min. 200A *3) 000 - 999A (1A unit Min. 100A *3) 000 - 500A (1A unit Min. 50A *3)
0.00 - 9.99kA (0.01kA unit Min. 0.40kA *3) 0.00 - 5.00kA (0.01kA unit Min. 0.40kA *3) 0.00 - 1.50kA (0.01kA unit Min. 0.30kA *3)
Voltage setting time 0.00 - 9.99V (0.01V unit Min. 0.30V *4)
Precheck function
(31 schedules)
Current upper		 lower limit settings 000 - 999A   0.00 - 9.99kA
Comparator function
(31 schedules)		 Current upper / lower limit settings 000 - 999A   0.00 - 9.99kA
Voltage upper / lower limit settings 0.00 - 9.99V
Power upper / lower limit settings 0.00 - 9.99kW   0.0 - 99.9kW
Monitor display Weld 1 and 2 (Average current / average voltage),
weld 1 and 2 (Peak current / peak voltage),
weld 1 and 2 (Average power / average resistance),
current, voltage, power, resistance waveform,
schedule number
Dimensions (mm) *5 172(W) X 390(D) X 400(H) 172(W) X 390(D) X 269(H)
Mass 28kg 18kg 15kg

*1: 1-step welding mode *2: 2-step welding mode *3: Minimum welding current
*4: Minimum voltage *5: Projections on the rear side not included

The specification and external design are subject to change without notice.

 

Model name
MDB-4000B
MDB-2000B
MDC-2000B
Type Polarity switching type Two-channel type
Power supply voltage Single-phase, 100 to 120VAC or single-phase,
200 to 240VAC 50/60Hz
Maximum power consumption 350W 300W
Maximum welding current 5000A 3000A
Maximum welding voltage 30V
Control method Constant current control type / constant voltage control type / constant current and voltage control type
Timer setting
(31 schedules)		 Squeeze 000 - 999ms /
000 - 999ms X 10		 000 - 999ms
Precheck welding 0.00 - 1.00ms
Precheck evaluation time 2ms (Fixed)
Upslope 0.00 - 9.99ms (Included in weld) *1 (Included in weld 1) *2
Weld (1-step welding mode)
/ Weld 1,2
(2-step welding mode)		 0.00 - 9.99ms
Cool (for 2-step welding mode only) 0.00 - 9.99ms
Downslope 0.00 - 9.99ms (Included in weld) *1 (Included in weld 2) *2
Hold 000 - 999ms
Current setting time 000 - 999A (1A unit Min. 100A *3) 000 - 999A (1A unit Min. 50A *3)
0.00 - 5.00kA (0.01kA unit Min. 0.40kA *3) 0.00 - 3.00kA (0.01kA unit Min. 0.60kA *3)
Voltage setting time 0.00 - 9.99V (0.01V unit Min. 0.30V *4)
Precheck function (31 schedules) Current, upper / lower limit settings 000 - 999A   0.00 - 9.99kA
Comparator function
(31 schedules)		 Current, upper / lower limit settings 000 - 999A   0.00 - 9.99kA
Voltage upper / lower limit settings 0.00 - 9.99V
Power, upper / lower limit settings 0.00 - 9.99kW   0.0 - 99.9kW
Monitor display Weld 1 and 2 (Average current / average voltage),
weld 1 and 2 (Peak current / peak voltage),
weld 1 and 2 (Average power / average resistance),
current, voltage, power, resistance waveform,
schedule number
Dimensions (mm) *5 172(W) X 390(D) X 400(H) 172(W) X 390(D) X 269(H)）
Mass 28kg 18kg

*1: 1-step welding mode *2: 2-step welding mode *3: Minimum welding current
*4: Minimum voltage *5: Projections on the rear side not included

The specification and external design are subject to change without notice.

 
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