Vital Logic Gate (VLG)

Soft, Reliable, Solid-state Gate Activation
The Vital Logic Gate VLG from GE - Transportation utilizes an advanced concept in vital systems logic circuitry for safe, reliable gate activation at a grade crossing, with design techniques proven by the Crossing Control Unit and a B1 relay base compatible package, also from GE - Transportation.

The standard VLG is equipped with two vital inputs and a single vital relay drive output. System options allow for input capacity to be increased for four vital inputs and the addition of a second, time-delayed vital output. With configuration options, the VLG can be adapted to various applications requiring multiple inputs with one or two outputs.

With its unique packaging concept and a series of LED indicators to mimic relay operating sequences, the VLG provides a low-cost system that's easy to install and troubleshoot without sacrificing performance. The solid-state design does not require mandatory testing.

Vital Logic Gate (VLG)