User Manual

TRAIN CHIEF® II LRCS W/ Lightweight OCU-BT – OPERATORS MANUAL
95-00-0-062, Rev 09 4-15 Control Chief Corporation
4.6 Selective Dual Control (also known as Pitch & Catch)
4.6.1 Introduction
Selective dual control enables a team of two operators to selectively control a
locomotive during remote control operations, commonly referred to as “Pitch & Catch”.
The operator currently in control of a locomotive can simply relinquish control status of
the locomotive until the other operator acquires control status.
Locomotives configured for selective dual control can be assigned two OCU’s
designated as OCU – A and OCU – B. The locomotive is equipped with RED and BLUE
strobes to provide an active indication of primary control. The RED strobe represents
OCU – A and the BLUE strobe represents OCU – B.
Terms used in the selective dual control procedure
Primary – OCU with active control of the locomotive, as indicated by the flashing strobe
on the side of the locomotive; can issue all Control commands and Priority commands.
Secondary – OCU does not have active control of locomotive but can issue a priority
command.
Priority Command – E-stop, tilt, and HORN only
Control Command – reverser, throttle, brakes, and auxiliary functions (lights, sand,
Bell, etc).
4.6.2 OCU Controls
PITCH – momentary – operators presses button to transfer (relinquish) control to
another operator.
HORN – momentary – operator pushes this toggle to acknowledge acceptance of an
acquired transfer from another operator.
4.6.3 Locomotive Indications
Strobe Lights: RED and BLUE
RED Flashing – OCU “A” has primary control of the locomotive
BLUE Flashing – OCU “B” has primary control of the locomotive
RED and BLUE OFF – neither OCU has primary control of the locomotive
4.6.4 Selective Dual Control Procedure
After initial setup and test procedures are completed the system is ready for general
remote control operations.
1) Initial ACQUIRE – establishing primary operator
a) Locomotive movement must be brought to a complete stop.
b) Perform the following setup to ready OCU to acquire control:
i) Reverser to NEUTRAL
ii) Throttle selector to the HALT position
iii) Trainline brake centered
iv) IF the above switch positions are not set and the operator attempts to acquire
control the OCU will sound an audible alarm and the system will ignore the
acquire request.
c) Operator wishing to acquire control as primary must press HORN.