User's Manual
TRAIN CHIEF® II LRCS w/Lightweight OCU OWNER’S MANUAL
95-00-0-xxx Rev 000 3-11 Control Chief Corporation
Pneumatic Components
The following pneumatic components comprise the pneumatic control and interface for the Train
Chief® II system and are included in the RCU, mounted on the specifically designed enclosure
back plate.
PROPORTIONAL VALVES AND MANIFOLD
Manifolds have been specifically designed to integrate the brake pneumatic components.
Referred to as the “proportional valve manifold”, one manifold integrates all components
used both normal and emergency brake control with the required regulators. Another
proportional valve manifold is used for normal and emergency trainline brakes, when
present.
PRESSURE REGULATORS
Supply air from the locomotive main reservoir is controlled using a 0-100-psi regulator, for
the pneumatic components used in the Train Chief® II system. A second stage 0-100-psi
regulator is used to further control the air used for emergency brake system. Both regulators
are located at the supply end of one of the proportional valve manifolds.
PRESSURE MONITORING
Main reservoir pressure is monitored by a dedicated transducer on the solenoid valve
manifold. Brakes and Trainline pressures are monitored by feedback from a dedicated
transducer fed from the actual application points on the locomotive.
EMERGENCY SOLENOIDS
The Brake Emergency Stop (BKES) solenoid is used to apply air for independent
emergency brake application. Additional a dedicated (TLES & TL DUMP) solenoid valves
are used to dump brake pipe air for emergency trainline brake application
SOLENOIDS VALVES
Solenoid valve(s) are provided (and integrated on a dedicated manifold) that are used to
control additional locomotive functions such as horn/bell, sanding, and uncoupling. Refer to
your system specific documentation to find which features are included on your system.
Figure 3-9: Typical Pneumatic Components
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