Negative Input Converter

This document describes the Type W511 Negative Input Converter, a circuit module that converts negative voltage levels to DEC standard levels of ground and -3V. The module utilizes a grounded-emitter inverter with a diode string for configurable switching thresholds at 0V, -1V, -2V, or -3V. The document includes a connection table for thresholds, electrical input/output specifications, power requirements, and essential installation guidelines.