Technogym Synchro Excite 500, Руководство по техническому обслуживанию

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SYNCHRO EXCITE Class & Trend: Service & maintenance manual - rev. 2.0
Pagina 3.10
3.2. BRAKE CONTROL
3.2.1. M
ECHANICS
The motion of the pedals imparts a rotation to the primary shaft via the belts and pulley system.
The primary shaft is connected to the secondary shaft and so to the brake, 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
ONTROLS
The control block diagram is as follows:
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.
When the brake interface board receives the signal to generate resistance, the green LED
illuminates.
Display Board
Brake board
RS-485
CN9
CN3
1-2/CN2
Brake
Excitation Current
3-4/CN2
Pulses
Speed
sensor
Green LED