Type GSM 60 Series AC Geared Servo Motors are permanent split capacitor induction
motors. No brushes or starting switches are employed. The low inertia servo-type motor
is specifically designed for servo applications requiring relatively fast response. Its two
windings are referred to as the fixed or reference phase (red leads) and the control phase
(black leads). In the normal mode of operation a fixed voltage is impressed on the
reference phase and a variable voltage, in quadrature to reference voltage is given to the
control phase. The speed and direction of rotation then depend on the magnitude and
phase (�±900) of control voltage. However, by using a phase splitting capacitor it is also
possible to operate the motor (reversibly) from single phase supply.

Type GSM 60 Series AC Geared Servo Motors are permanent split capacitor induction
motors. No brushes or starting switches are employed. The low inertia servo-type motor
is specifically designed for servo applications requiring relatively fast response. Its two
windings are referred to as the fixed or reference phase (red leads) and the control phase
(black leads). In the normal mode of operation a fixed voltage is impressed on the
reference phase and a variable voltage, in quadrature to reference voltage is given to the
control phase. The speed and direction of rotation then depend on the magnitude and
phase (�±900) of control voltage. However, by using a phase splitting capacitor it is also
possible to operate the motor (reversibly) from single phase supply.