UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665 1-1
CHAPTER 1
DESCRIPTION
Section I. Introduction
Features
The UB25 Linear DC Welding Control is a Resistance Welding Power Supply. For the rest of this
manual, the UB25 will be referred to simply as the Power Supply. The Power Supply has the following
features:
• Programming of time in 10 µsec increments (minimum) provides shorter weld times, less part
deformation, longer electrode life, and greater weld strength with more part ductility.
• Built-in Liquid Crystal Display (LCD) shows a graphical "trace" of weld current, voltage, power
and resistance, plus alphanumeric peak and average values.
• Up to 99 individual Weld Schedules (sometimes referred to as weld profiles) can be programmed
and stored. Weld schedules can be used individually or in sequence with others using the "chain
schedules" function. You can also use schedule #00 as a "scratch pad" for developing schedules.
• Easy-to-set limits establish process window for acceptable quality.
• Weld limits and user programmable relays can be used in conjunction with visual and audible
signals for operators and automation interface.
• Active Part Conditioning (APC) compensates for varying part conditions and oxide layers.
• Rear-mounted RS-232 and RS-485 connectors allow for remote programming, weld schedule
selection, and data logging for SPC purposes.
• Calibration traceable to NIST standards.
• Password protection provides process security.
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