Technogym RUN NOW EXCITE + - AT-UL Driver

RUN NOW Excite +: Technical Service guide - rev. 6.2
Page 3.15
3.22.1. AT-UL DRIVER
It’s the device that acts as an interconnection hub for the main components of the lower assembly,
and serves as the point of connection with the display. In fact:
 it exchanges, over the RS-485 serial link to the CPU/ARM board, the commands for
controlling the tread belt and elevation motors;
 it supplies the tread belt motor with a variable-frequency sinusoidal voltage: varying the
frequency varies the speed of rotation of the motor, and consequently the speed of the tread
belt;
 it supplies the elevation motor with a 24Vdc;
 it exchanges, over the RS-485 serial link to the CPU/ARM board, the error signals pertaining
to the tread belt and elevation motors;
 it exchanges, over the RS-485 serial link to the CPU/ARM board, the commands for viewing
and configuring the inverter parameters;
 it exchanges, over the RS-485 serial link to the CPU/ARM board, the commands for viewing
the errors logged by the inverter.
 Receives the mains voltage at its inputs and outputs the DC supply voltages for the machine
circuit boards listed below:
Supply voltage
Connector
Description
+24Vdc
XU1
Power supply for the fans of the electrical box
+5Vdc
XU1
Power supply for belt and elevation motor encoders
+5Vdc
+12Vdc
XU2
Power supply for display
From the outside the following indicator LEDs are visible:
LED name
Colour
Description
H2
GREEN
+5Vdc
H3
GREEN
+12Vdc
H4
GREEN
+24Vdc
H5
RED
400Vdc
It contains:
 The AT driver board
 The AT power supply board
 2 fans
 A breaking resistor