User Manual

TRAIN CHIEF® II LRCS W/ Lightweight OCU-BT – OPERATORS MANUAL
95-00-0-062, Rev 08 3-2 Control Chief Corporation
Throttle Selector: Ten-position selector represents the throttle position available in the
cab. However, one additional feature of the OCU throttle is the HALT function.
• HALT: commands the throttle to idle, removes the generator field, and also
gradually applies independent brakes.
• IDLE: commands throttle to idle and removes generator field but does not
apply brakes.
• The remaining positions, 1 through 8, command the same throttle settings as
the control cab console settings.
Automatic Brakes:
This 3-position spring centered switch allows the operator to
release or apply train brakes by reducing
brake pipe by the following pressures:
• Release 0-psi reduction
• Minimum 6-8 psi reduction
• Light 10 psi reduction
• Medium 18 psi reduction
• Full 26 psi reduction
• The Charge position is used to pressurize the air brake system.
The center switch position (LAP) maintains the last brake setting.
Each time the switch is pressed (must be held for 0.5 sec), the train brakes are
incremented to the next higher/lower setting.
On the First application of Auto Brake the locomotive brake portion of the train brake
application is automatically bailed off.
Whenever the switch is pulled (must be held for 2 sec), the train brakes immediately
revert back to Release position.
Independent Brakes:
This 5-position selector allows the operator to apply independent
locomotive brakes to achieve the desired stopping power. Some positions limit and
override the throttle control.
Selectable positions are:
• Release (0 psi): this is the normal operating position when operating in power
mode (Throttle positions 1-8). (Note RELEASE selection is indicated when all
Independent Brake LEDs are off.)
• B1: Applies 1/5 of the available independent brake pressure to the brake
cylinders. Throttle selections T1 to T8 are allowed.
• B2: Applies 2/5 of the available independent brake pressure to the brake
cylinders. Throttle selections T1 to T8 are allowed.
• B3: Applies 3/5 of the available independent brake pressure to the brake
cylinders. Throttle selections T1 to T8 are allowed.
• B4: Applies 4/5 of the available independent brake pressure to the brake
cylinders. When brake pressure reaches 20 PSI the throttle is limited to T4.
See note.
• FULL: Applies total available independent brake pressure to the brake
cylinders. When brake pressure reaches 20 PSI the throttle is limited to T4.
See note.
NOTE: The parameters used to establish thresholds for limiting throttle for a given
brake pressure can be adjusted per owners’ operating rules and requirements.