Technology Spotlight: Updated Technology Closes the Full-featured Welding Loop

Amada Miyachi America’s new IS series midfrequency inverter weld controls, designed for spot welding and fusing, can be easily integrated into a new or existing automated process.

Amada Miyachi America’s new IS series midfrequency inverter weld controls designed for spot welding and fusing, can be integrated into new or existing automated processes. With closed-loop current, voltage, and power feedback; fast response times; and a wide range of output power, they fit with small or large, single or mixed part manufacturing.

Suitable for aerospace, electronic, automotive, battery, and appliance industries, the power supplies can be used for numerous applications. Examples include commutator fusing, copper wire to terminal welding, sheet metal welding, and copper busbar welding.

Low currents are available for small, delicate applications. The current options make it possible to weld many parts using one welding control. With the demand for lighter vehicles, aluminum welding in automotive manufacturing will increase, and this brings with it a particular need for full-featured quality controls.

The triple-pulse weld capability provides flexible weld profiles, allowing for three pulses in each cycle. Each weld segment can be programmed with upslope and downslope and may contain up to 19 pulses. Users can also change the control mode for each weld segment.

From Small to Large Applications

Two models are available. The IS-800CR is an 800-amp inverter power supply that provides output power from 0.050 to 40 kA in four ranges. It can be used as a standalone, large-scale welding station or for applications that require welding many different-sized parts on the same station, or any application requiring closed-loop feedback control and fast response times. Such applications include medium-size welding jobs like wire termination, battery tabs, and tang welds to larger jobs like tombstone welding and sheet metal fusing.

The IS-1400CR is a 1,w400-amp inverter power supply that provides 0.050 to 80 kA of power in five ranges. With this higher output power, it can be used for the same applications as the IS-800CR, as well as those requiring higher currents, including aluminum, copper, and projection welding.

The basic models introduce new features. Six control modes are offered: primary limit, primary, secondary root mean square (RMS), secondary constant power, secondary voltage control, and fixed pulse. Two valve outputs and a precisely controlled, repeatable waveform, adjustable from 600 to 3,000 Hz in 100-Hz steps, are included in these models. ASCII data output is available after each weld.

Basic Features and More

The full-featured models offer all the capabilities of the basic models plus advanced force and displacement abilities unique to the units. Initial part thickness check, weld to displacement, final displacement limit setting, resistance precheck, six valve outputs, repeat function, forge and retraction valves, and chaining and successive welding modes with back step top the list.

Other features include 5- and 7-way cascade options, an I/O check screen, and RS-232 or RS-485 communications. The units are equipped with a current-shutoff function, which shuts off current in response to external input, ensuring stable fusing.

Packaged in a NEMA enclosure, the new units come standard with a rotary handle and internal circuit breaker with primary short-circuit protection.

Motor armatures, sheet metal, and busbars are examples of the large and small welding jobs that can be completed using the IS series midfrequency inverter weld controls.

Options and accessories for the inverter weld controls include a programming pendant, meter pendant cables, transformer sense cable, chiller, and fume extractor.

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