Technogym Jog Now Excite+ 500, Service Maintenance Manual

Page: 50 / 202

JOG NOW : Service & maintenance manual - rev. 5.1
Page 3.14
3.13.1. 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