Technogym Recline 500, Руководство по техническому обслуживанию

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RECLINE EXCITE: Service & Maintenance Manual - rev. 2.4
3.2. BRAKE CONTROL
3.2.1. M
ECHANICS
The movement of the pedals puts the brake into rotation by means of a belt. The speed sensor (only
on mains operated models) attached to the frame detects the heads of the screws which secure the
disk to the flywheel, and generates a signal proportional to the speed. On self powered machine, the
speed value is detected measuring a phase of the alternator.
3.2.2. C
ONTROL
The control block diagram is as follows:
Display Board
Brake board
RS-485
CN9
CN4
1-2/CN2
Brake
Excitation Current
3-4/CN2
Pulses
Speed
sensor
Green LED
The resistance which the user perceives on the pedals is a combination of 2 factors:
•
mechanical: mechanical efficiency of the linkages and more generally the mechanical friction
of the system as a whole. The mechanical friction has been measured in the laboratory and is
determined by a specific SW function of the upper kit.
•
electrical: resistance produced by the brake;
To obtain a given exercise effort level, the display board sends the required value of “electrical”
resistance to the brake board via the RS-485 serial link. Based on the commands received and the
feedback signal from the speed sensor, the brake board will then apply the appropriate excitation
current to the brake winding and generate an electromagnetic field.
The value of the current applied is based on the value of the brake table memorized into
the brake board.
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