Technogym Run XT, Service Maintenance Manual

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RUN XT: Service & Maintenance Manual - rev. 2.0
Page 3.2
(produced by high voltage lines, radio transmitters, monitors, motors, etc.) within its reception
area, the receiver becomes saturated and stops receiving any signal. If there are 2 transmitters
within its area of reception, it will receive signals from both, and may produce an error or
irregular reading.
(3) CPU BOARD
This is the heart of the machine, which controls all the machine functions by executing the
program stored in EPROM. It receives information from the user (age, weight, etc.) during
set-up of the training session, from the cardio receiver (user’s heart rate), from the inverter
interface board and from the up-down interface board. It controls the speed selected with the
“+” “
−
” keys and the elevation selected with the “
↑
” “
↓
” keys or according to the chosen
training program. It receives the error signal from the inverter interface board and the status
signal from the up-down interface board
(4) INVERTER INTERFACE BOARD
Receives from the display a PWM signal proportional to the selected speed, and converts it
into a continuous voltage for controlling the inverter. Receives the error signal generated by
the inverter in the event of problems and transmits it to the display. Receives the low voltages
output by the power supply and passes them to the display. There are 2 LEDs on the board:
DL1 illuminates when the tread belt is moving, while DL2 illuminates when the inverter does
not detect any error conditions and therefore the alarm signal is inactive.
(5) UP-DOWN BOARD
Receives from the display the enable signal for elevation motion and converts it into a control
for the up-down motor. Generates its power supply and the DC power supply for the motor by
means of a transformer and rectifier bridge. Determines the motor position, and hence the
treadmill elevation, by means of the photocell. Generates and sends to the display a motion
status signal at every 0.5% variation in the elevation. Checks the lower and upper travel limits
by means of 2 limit switches. The board includes 2 LEDs associated to the limit switches,
which are normally illuminated: DL1 comes off when the upper limit switch is tripped, while
DL3 comes off if the lower limit switch is tripped.
(6) INVERTER
This is the device which supplies the three-phase belt motor. It receives a DC control voltage
from the inverter interface board. Variations in this voltage cause corresponding variations in
the operating frequency of the inverter/motor, and hence change the speed of the tread belt. It
handles motor drive errors and, in the event of an error, shuts down the power supply to the
motor and sends an alarm signal through the interface board to the display. The event which
caused the error is memorized as an error code.
(7) PHOTOCELL
This is the device which provides feedback on the motion of the up-down motor. It transmits
one pulse for each slot detected on the encoder which is fixed to the gearmotor, and a signal
indicating the direction of movement. The up-down board, receiving the pulses, sends the
status signal to the display which stops the motor when the number of pulses received
coincides with the desired elevation.