RUN XT: Service & Maintenance Manual - rev. 2.0
Page 3.3
(8) UP-DOWN MOTOR
It is a DC motor which, by means of a mechanical reduction unit and a timing belt, turns the
lead screw nuts on the threaded elevation bars, causing the machine to be raised or lowered
depending on the direction of rotation.
(9) BELT MOTOR
An asynchronous three-phase motor which, by means of a pulley and a poly-v belt, turns the
driving roller of the tread belt. Each motor phase is equipped with a normally-closed bimetallic
safety which opens when the temperature exceeds a preset threshold, in order to safeguard the
integrity of the motor. The 3 bimetallic safeties are connected in series and reach the inverter as
a NC external input signal. When this contact opens, the inverter generates an alarm.
(10) LIMIT SWITCHES
There are 2 limit switches which control the range of motion of the elevation mechanism.
These switches are positioned at the travel limits of the elevation bars, and change state when
pressed and/or released. The lower limit switch is NC, while the upper one is NO.
(11) POWER SUPPLY
Receives the mains voltage at its input and outputs the DC voltages (+5 V, +12 V and −12 V)
which supply the display and the inverter interface board.
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