20-02245 REV E
1
INTRODUCTION
This publication describes the ROS model PT-25(FB)-24VDC-RS-485 Pan and Tilt and
the R-25(FB)-24VDC-RS-485 rotator. These positioners utilize brushless stepper
motors and integral electronic stepper motor drivers. The positioners are designed for
operation from a 24 volt dc source. Control functions are achieved through a standard
RS-485 2 wire Half Duplex communications configuration.
Both positioners are offered as air filled units, for shallow applications or in air operation,
or as oil-filled pressure compensated units suitable for deep-water applications.
For problems or questions not covered in this manual, please contact the factory or one
of our authorized representatives.
ROS Inc, reserves the right to change or modify designs or specifications as part of its
continuing product improvement program.
NOTE:
Positioner operation is normally under operator control from a remote computerized
control unit. A separate manual (21-30022) is provided that has details on the
interfacing and protocol required for operation.
