RUN PERSONAL: Service & maintenance manual - rev. 3.1
Page 3.7
3.6. BELT MOTOR
An asynchronous three-phase motor which, by means of a pulley and poly-v belt, turns the driving
roller of the tread belt. Is equipped with a normally-closed thermal cutout which opens when the
temperature exceeds a preset threshold, in order to safeguard the integrity of the motor. The thermal
signal reaches the driver as a NC external input signal. When this contact opens, the driver
generates an alarm.
It is equipped with a high inertia flywheel, to permit more gradual deceleration of the tread belt in
the event of a power outage or emergency stop.
ATTENTION: dangerous voltages are present at the motor and flywheel.
Tread belt motor power see at the paragraph: 2.3. “Technical specification”.
3.7. ELEVATION MOTOR
This is a linear actuator equipped with 24Vdc motor, integral reduction gear and a rod that is pushed
backward and forward by the motor. This rod acts upon a frame connected to the front wheels of the
machine: when the rod moves so does the frame, thereby lowering raising the machine.
The actuator has a built-in Hall effect sensor which acts as an encoder, generating pulses when the
motor moves. This furnishes a feedback signal on the motor movements, which is used for tracking
the position of the rod and hence the elevation of the machine.
3.8. LIMIT SWITCH
This is a NC microswitch which defines the zero-reference position for the elevation mechanism:
the switch is positioned so that it is pressed by the machine during the reset procedure, thereby
defining the reference position.
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