Chapter 3
Theory of Operation
P/N 57150002, Revision 5.0 3 - 33 Trimble S, VX, SPS & RTS Service Manual
F
Fig. 3-32 Horizontal servo system parts
SRC board incl. magnets
Contains the magnet side of the motor. The magnets are placed in an outer and inner circle of the
motor winding.
The SRC, slip-ring board is attached to the magnet holder providing current and a communication to
the vertical axis (IPC board) and horizontal axis (PSM board).
MSB board incl. motor winding
The motor winding is mounted on the MSB board. All other functions on the MSB board are used by
the angle system.
How it works
The servo motor is an electromagnetic motor that uses the known physics relation between current,
magnetic field and force to move the motor
SRC board
MSB board incl. motor winding
incl. magnets
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