User's Manual

TRAIN CHIEF® II LRCS w/Lightweight OCU OWNER’S MANUAL
95-00-0-xxx Rev 000 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 6-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 T3 are allowed. See notes 1 and 2.
• B4: Applies 4/5 of the available independent brake pressure to the brake cylinders.
Throttle selections T1 to T3 are allowed. See notes 1 and 2.
• FULL: Applies total available independent brake pressure to the brake cylinders.
Throttle selections T1 to T3 are allowed. See notes 1 and 2.
NOTE 1: If throttle is advanced T4 to T8 the default programming will reduce throttle to IDLE.
To recover throttle operations return throttle selector to IDLE.
NOTE 2: The threshold parameters for limiting throttle vs. brake settings B1 to FULL can be
adjusted per owners’ operating rules and requirements.