Electric Motor - Fiat TIPO Bedienungsanleitung

A torque sensor, fitted inside the geared motor, detects the change in angle between the input shaft
and the output shaft and supplies an electrical signal to the control unit that is proportional to the shift.
The casing for the geared motor also has the task of retaining the outer part of the torque and position
sensor and, lastly, the input shaft support cover is secured to the casing where the steering wheel is
fitted and houses both the ignition switch and the steering column stalk.
On the version with an adjustable column, the angle and the axial position of the steering wheel can
be adjusted in the car.
The geared motor casing must not, under any circumstances, be dismantled. Also, it would NOT be
possible to reassemble this complex system as in the factory.

Electric motor

Characteristics and operation
The electric motor is a three-phase self-switching synchronous motor (without blades) with a
permanent magnet rotor.
The power distribution and phase control are regulated by the Electric Steering Node management
control unit.
The motor's rotor is constructed through the application of permanent magnetic material.
There is a disc with magnets (2) fitted to it, secured to the motor's rotor (1), whilst there are three Hall-
effect semiconductors (3) on the fixed part of the crankshaft, output side. These notify the control unit
of the angular position of the crankshaft through 360°. Therefore, the position of the rotor (orientation)
is measured by the position sensors built into the casing (Hall-effect sensors), allowing the control unit
to supply the appropriate phases.
To reduce noise and pulsations at the steering column, the motor is fitted with three insulators for the
stator and one for the rotor.
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FIAT TIPO -5- 0.0
REV