User's Manual

TRAIN CHIEF® II LRCS w/Lightweight OCU OWNER’S MANUAL
95-00-0-xxx Rev 000 6-5 Control Chief Corporation
10. Automatic Brake Selector:
This 3-position spring centered switch allows you 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 charge 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.
11. Emergency Stop Push Button:
This control is a push-pull mushroom switch. Push-in to activate an operator commanded
Emergency Locomotive Stop. For normal operations the EMERGENCY mushroom must be
pulled-out.
Note: Emergency stop develops high brake cylinder pressures which increases the chance of
locking the locomotive wheels. Therefore, only use the EMERGENCY mushroom switch when
absolutely necessary.
12. IR Port:
Used to link OCU to Train Chief® II locomotive controller. Align with IR Port on the RCU when
registering a Lightweight OCU-BTIND with RCU.
This is the access window for IR (infrared) communication from the OCU when registering with
a RCU. Simply align the OCU IR port with the IR port per the instructions in Chapter 4.
13. Reverser Toggle:
This 3-position switch selects locomotive movement direction as Forward, Reverse, or Neutral.
14. Reset / Sand Button:
Pressing Reset for more than 2-seconds will activate Sanding by selected direction.
The Reset/Sand push button is located at the top right hand corner of the OCU.
1. It activates the sanders in the direction of movement when held for longer than 2 seconds.
2. It resets the Alert warning. See page 4-9.
3. It instructs the RCU to allow a brake release when the operator moves the Throttle selector
out of the HALT position.
CAUTION:
Unless the Reset pushbutton is released, an Alert Timeout error will occur
and the system will command a Full-Application Locomotive Stop.
15. Internal Antenna:
To enhance robustness and reliability the OCU is equipped with an internal antenna. Keeping
this susceptible component safely inside the OCU case minimizes repairs and downtime.