CD-A Series Capacitive Discharge Welding Power Supplies With Dual-Pulse Output

March 13, 2020
Amada's latest series of discharge welders offer consistent welding output for repeatable process results.

CD-A series of capacitive discharge power supplies feature dual pulse output control, internal pulse monitoring, optional polarity switching, and are automation capable. They are ideal for battery tab welding, interconnects, honeycomb tacking, and fine wire to pad applications.


The units offer consistent welding output for repeatable process results, with ultrafast rise time for conductive material welding. Featuring fully controllable dual pulse output, the CD-A series provides pulse shaping with 4 discrete pulse lengths, programmable squeeze and hold times, and adjustable pulse separation for process optimization. Furthermore, the units offer the ability to set limits around a schedule to prevent bad welds and a built-in peak current indicator which indicates the last weld peak current. The ability to change polarity—individual settings for positive, negative or alternating polarity—allows for a way to balance weld nuggets and overcome the Peltier effect, as well as extend electrode life. Pair the CD-A with an Amada Miyachi weld head with EZ-AIR operation for control of weld force for repeatable, consistent welding.


The CD-A is automation-ready and can be easily integrated into production lines. The units can be programmed to communicate with a host computer or with an automation control system. Operators can set and store up to 63 schedules to quickly change between weld parameters. A schedule chaining feature lets users automatically switch between two different schedules. The power supplies enable rapid-fire between pulses for quick welding of adjacent locations.


Two models are available, both offering programmable squeeze time and hold time, polarity switching, internal limits, and external communication. They are offered in 110-120VAC or 220-240VAC, single phase, 50/60 Hz. CD-A125A is a 125W second unit and Model CD-A300A is a 300W second unit. The CD-A series replaces Amada Miyachi America’s ADP and DP series of capacitive power supplies.