AMADA WELD TECH Fine Spot Welders Transistor-controlled welding power supplies

Standard: MD-A8000B MD-A4000B MD-A1000B Polarity switchable: MD-B4000B MD-B2000B Two channels: MD-C2000B

Clean fine finish in a short time of welding.


Catalog Ebook

MD-A8000B/MD-A4000B/MD-A1000B

Catalog Ebook

MD-B4000B/MD-B2000B/MD-C2000B


Features

 

■ 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.

■ 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.

■ 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.

■ Polarity switchable type

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

■ Two-channel type

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


Specifications
 
Model MD-A8000B MD-A4000B MD-A1000B
Type Standard type
Power requirements Single-phase, 100 to 120VAC or single-phase, 200 to 240VAC 50/60Hz
Maximum power consumption 350W 300W 300W
Maximum weld current 9990A 5000A 1500A
Maximum weld voltage 30V
Control method Constant current control / constant voltage control / constant current and voltage control
Timer setting
(31 schedules)
Squeeze 000 to 999(000 to 999)×10ms 000 to 999ms
Precheck welding 0.00 to 1.00ms
Precheck evaluation time 2ms (Fixed)
Upslope 0.00 to 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 to 9.99ms
Cool (for 2-step welding mode only) 0.00 to 9.99ms
Downslope 0.00 to 9.99ms (Included in weld) *1 (Included in weld 2) *2
Hold 000 to 999ms
Dimensions (mm) *5 172(W)×390(D)×400(H) 172(W)×390(D)×269(H)
Mass 28kg 18kg 15kg

*1: 1-step welding mode
*2: 2-step welding mode

Model MD-B4000B MD-B2000B MD-C2000B
Type Polarity switching type Two-channel type
Power requirements Single-phase, 100 to 120VAC or single-phase,
200 to 240VAC 50/60Hz
Maximum power consumption 350W 300W
Maximum weld current 5000A 3000A
Maximum weld voltage 30V
Control method Constant current control type / constant voltage control type / constant current and voltage control type
Timer setting
(31 schedules)
Squeeze 000 to 999(000~999)×10ms 000 to 999ms
Precheck welding 0.00 to 1.00ms
Precheck evaluation time 2ms (Fixed)
Upslope 0.00 to 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 to 9.99ms
Cool (for 2-step welding mode only) 0.00 to 9.99ms
Downslope 0.00 to 9.99ms (Included in weld) *1 (Included in weld 2) *2
Hold 000 to 999ms
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)×390(D)×400(H) 172(W)×390(D)×269(H)
Mass 28kg 18kg

*1: 1-step welding mode
*2: 2-step welding mode
*Specifications subject to change without notice.


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