Mitigating Leakage Current from Solid-State PLC Outputs Application Technique

This application technique document addresses the issue of leakage current from solid-state PLC outputs causing indicator lights to glow dimly, which can lead to unreliable status indication and operator error. It outlines three corrective options (shunt resistors, interposing relays, or swapping output modules) and promotes Allen-Bradley status indicators with built-in 3mA shunting circuitry and universal LED solutions as a more reliable, component-level solution.