Spectra Precision Focus 30 Service Manual

Chapter 3
Theory of Operation
P/N 79000035_SM, Version 1.5 3 - 31 Focus 30/35 Service Manual
software. In this way an endless fine drive motion in one direction is realized.
Fig. 3-30 Fine drive
Solenoid clamp
A thin clamp disc is fixed on the motor axis. A latching solenoid is fixed at the lever arm. In clamped
mode (2) the solenoid pulls the clamp disc against the break material, the motor axis and motor is
clamped and a traction between lever arm and motor housing transmits the fine motion to the
cogwheel.
Switching the solenoid to open position 1 the coarse drive works again, driving the axis.
Fine drive
motor
Tension
gear
Coarse stepper motor
Right stop
Left stop
Coarse drive
lever
Clamp disc

Spectra Precision Focus 30 Specifications

General

Brand	Spectra Precision
Model	Focus 30
Category	Measuring Instruments
Language	English