Technogym EXCITE Run 500, Service Maintenance Manual

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RUN EXCITE-2008: Service & Maintenance Manual - rev. 1.3
Page 3.13
3.2. TREAD BELT MOTOR DRIVE
3.2.1. M
ECHANICS
The tread belt is actuated by the motor through a linkage consisting of the motor pulley, the driving
roller and the belt which connects them. In this way, a given belt motor speed corresponds to a
predetermined linear tread belt speed.
3.2.2. C
ONTROLS
The control block diagram is as follows:
To actuate the motor, the display board communicates with the ALE/AT UL driver via the RS-485
serial link. Based on the commands received, the AT UL driver drives the motor by applying a
variable frequency sinusoidal voltage: the frequency determines the speed of rotation of the motor
and hence the linear tread belt speed.
During its movement, the ALE/AT UL driver continually checks the motor by monitoring its
current draw as well. If any problems are detected (low voltage, overcurrent, SW or HW inverter,
etc....) it halts the motor and sends an alarm signal to the display board, which displays a “THE
EQUIPMENT IS BLOCKED” which may lead to different error codes stored by the driver.
Display Board
ALE/AT UL
driver
RS-485
CN2
J4
1-2-3/J5
M
Cut-out
4-5/J5
VAC
with variable frequency