User Manual
TRAIN CHIEF® II LRCS W/ Lightweight OCU-BT – OPERATORS MANUAL
95-00-0-062, Rev 08 3-11 Control Chief Corporation
3.3.2 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 “proportion 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
Status of the main air reservoir pressure is provided through either feedback from the
proportional valves and/or via a dedicated transducer on the proportional valve
manifold.
EMERGENCY SOLENOIDS
The Brake Emergency Stop (BKES) solenoid is used to apply air for independent
emergency brake application. Additional solenoids are used for similar emergency
applications for trainline brakes (if present).
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 exactly which features are
included on your system.
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Figure 3-6 Typical Pneumatic Components