The features incorporated into this module address current market requirements for higher channel density and performance. The module can measure AC and DC input frequencies of up to 50KHz. The module has an on board microprocessor that will convert counter inputs into a frequency data. Counter inputs can be configured in pairs for quadrature encoding. Total count and the calculated input frequency will be available to the PLC at the same time. An input scale factor "K" will be programmable for each channel, and can be used for range scaling or for Flow Meter calibration. The counter's accumulator is available in two ranges. The maximum count total for the small range is 32K, the larger uses two data words per channel and will count up to 16M. The channel update rate varies depending on the output mode. Typical update rates are in the 4 msec per channel range.
Spectrum Controls, Inc., P.O. Box 5533, Bellevue, WA 98006. Tel: 425-746-9481. Fax: 425-641-9473.