At-Ul Driver Box; At-Ul Power Supply Board; Fans; Breaking Resistor - Technogym RUN NOW EXCITE + Technical Service Manual

3.22.2. AT-UL
DRIVER BOX
It is the upper board of the assembly and it is the heart of the driver: it does everything was
described above for the AT driver except the function of the AT power supply board described
below. In details:

It receives the line voltage and, through a PFC module, it rectifies the voltage to the 400 Vdc
used to generate the 3 phase voltage for the belt motor and to power up the AT power supply
board.

Internally it houses an inverter to control the belt motor;

Internally it houses a DC driver to control the elevation motor.
The board includes the following indicator LEDs visible when the AT driver cover is removed:
LED name
ALARM
EN_UP
EN_DOWN
TACHO
DWN_SW
3.22.3. AT-UL
POWER SUPPLY BOARD
It is the lower board of the assembly and it receives the 400 Vdc from the AT driver board and
outputs to the AT driver board the low voltages used by the machine.
3.22.4. F
ANS
There are 2 fans powered with 24 Vdc used to cool down the AT driver.
3.22.5. B
REAKING RESISTOR
It is a 150 Ohm used by the AT driver board to dissipate the energy produced by the motor when it
is working as a generator.
3.22.6. P
OWER SUPPLY BOX
It is a box that contains:

Power entry socket;

ON-OFF switch;

2 circuit breakers that check the overload on line and neutral;

A mutual inductance.
Page 3.16
Colour Description
If ON indicates that the AT driver has detected an error
ROSSO (EdC) when it was moving the elevation motor. This LED
stay ON for about 1 second and then goes OFF.
if ON indicates that the motor has received the supply
VERDE
voltage for movement in the upward direction
if ON indicates that the motor has received the supply
ROSSO
voltage for movement in the downward direction
functioning of elevation motor encoder: if blinking, indicates
VERDE
that the board is receiving the pulses from the encoder
status of Limit switch contact: if ON indicates that the
VERDE
microswitch is pressed
RUN NOW Excite +: Technical Service guide - rev. 6.2