The Throttle Assist Gateway provides a stand-alone communications-based physical control stand interface to allow a host computer to access and control locomotive throttles. Throttle signals from the control stand and train-line are intercepted by TAG, and are either passed through to the local governor or blocked while the throttle commands set by the host computer via Ethernet are asserted onto the governor valves. This allows individual throttle control of each locomotive in a TAG-equipped multiple unit consist. For dynamic braking, TAG drives the dynamic brake excitation from the lead locomotive in a single or multiple unit configuration, where dynamic brake control signals are wired in parallel with the locomotive control stand.
TAG, available with LSI rack or wall mounting options, has been field-proven with New York Air Brake’s LEADER™ freight train energy management system. The TAG also supports the M-9155 protocol, making it an ideal LCCM-compliant throttle interface.