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4 SYSTEM DESCRIPTION
4.1 MANUAL STEERING WITH TACHO-GENERATOR OR STEPPER MOTOR
This option uses a tacho-generator (or a stepper motor) attached to the steering wheel
to convert the steering wheel rotation into an electrical signal. The control logic sets the
steer servo-motor in motion at a speed that increases with the speed of the steering
wheel. Steering sensitivity and maximum speed are adjustable by using the ZAPI hand
held controller.
4.2 AUTOMATIC CENTERING
Through the AUTOSEL input request it is possible to turn the steering state from
manual mode to automatic centering. The automatic centering request should be edge
or level conditioned (see option AUT INP ACTIVE 10.7.7). As soon as an automatic
centering request is recognized, the steering control will start to automatically rotate the
MDU until it is straight ahead.
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