Technogym Recline 500, Service Maintenance Manual

Page: 44 / 182

RECLINE EXCITE: Service & Maintenance Manual - rev. 2.4
Page 3.12
When the brake interface board receives the signal to generate resistance, the green
LED illuminates.
The electromagnetic field produced by the winding and the rotation of the disk will induce eddy
currents in the disk itself, giving rise to a force which tends to brake its motion. This produces the
exercise resistance.
A higher brake excitation signal will produce a correspondingly higher exercise resistance. In
addition, for a given value of brake excitation, a higher speed of disk rotation will produce a
correspondingly higher exercise resistance.
Due to the eddy currents, energy is dissipated on the brake disk in the form of heat.
The brake board effects an open loop control of the brake, with no provision for
regulating the value of resistance produced. The precision of the braking system has a
tolerance of 10%.
±
During the movement, the speed sensor detects the heads of the brake disk fixing screws, and
produces a speed feedback signal that is sent to the Brake board, on the mains operated machines.
On the self powered machines, the speed signal comes directly from the measure of an alternator
hase. p
If the brake board does not receive a speed signal which indicates that an exercise
movement, the brake board checks for possible malfunctions. The errors which can
ccur are
session is in progress, the machine will not produce any resistance.
uring the D
o
:
Error
Code
Description
1
OVERHEATING: this condition occurs when the temperature measured
by the sensor on the circuit board exceeds 90°C.
2
OVERCURRENT: this condition occurs when the current going to the
solenoid measured by the board exceed the max value.
4
UNDERVOLTAGE: this condition occurs when the +12 Vdc voltage
drops below 9.7 Vdc (only on the 500i, 700i and 700iE model).
8
OVERVOLTAGE: this condition occurs when the +12 Vdc voltage goe
above 13.7 Vdc (only on the 500i, 700i and 700iE model).
s
16 WATCHDOG : this condition occurs when the brake board SW crashes.
32 EPROM: SW error on the brake board.
128
urs when the MACHINE NOT CALIBRATED: this error condition occ
calibration parameter stored in the brake board is incorrect.
In the case of error 128, the machine will continue to function completely, but the braking
resistance produced will not correspond to the value entered on the display. In all other cases, the