National Instruments

Whether used for controlling a chemical mixer or analyzing the output frequency of an encoder, counter-timer modules perform a variety of functions. Typical applications include quadrature encoder measurement, edge detection, frequency measurement, pulse-train and pulse-width-modulated (PWM) signal generation.

This white paper introduces the new features of the latest National Instruments counter-timer devices and provides concrete examples of industrial applications and specific sensors that demonstrate the benefits of these features. The recently announced NI 6624 counter/timer devices offer channel-channel isolation and a ±48 VDC voltage range on inputs and outputs; they also incorporate the NI-TIO ASIC and take advantage of NI-DAQmx software technology.

Key systems that benefit from high-voltage, channel-channel isolated counter/timer modules include automotive, aerospace, and any other industrial applications that use frequency output sensors such as encoders, counters, flow sensors, torque sensors, timers, tachometers, and actuators driven by pulse train and PWM outputs such as stepper and servo motors. In this white paper, we examine the following applications.