Analog quantity dual-output light-operated device based on frequency converter control system
The invention relates to an analog quantity double-output light-operated device based on a frequency converter control system, which is characterized in that an input pin I of a CPLD (Complex Programmable Logic Device) logic chip is connected with a port I of a frequency converter main control board...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to an analog quantity double-output light-operated device based on a frequency converter control system, which is characterized in that an input pin I of a CPLD (Complex Programmable Logic Device) logic chip is connected with a port I of a frequency converter main control board, an output pin I of the CPLD logic chip is connected with an input end of a DA (Digital-to-Analog) conversion chip, and an output end of the DA conversion chip is connected with an input end of an operational amplifier circuit I; the output end of the operational amplifier circuit I is connected with a corresponding analog quantity output end; the input end of the second operational amplifier circuit is connected with the corresponding analog quantity input end, the output end of the second operational amplifier circuit is connected with the input end of the AD conversion chip, and the output end of the AD conversion chip is connected with the second input pin of the CPLD logic chip. The frequency converter has th |
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