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Using PTC Thermistors with Yaskawa AC Drives Application Note

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This application note explains how to use Positive Temperature Coefficient (PTC) thermistors with Yaskawa AC drives (E7, P7, F7, A1000, Z1000) for motor over-temperature protection via the drive’s analog input. It details the thermistor configuration, trip point voltage (2.34 Vdc), internal resistance (20,000 ohms), and the correct branch resistance value (18,000 ohms) to prevent unexpected overheat trips.

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