Technogym BIOSTRENGTH LINE, Service Maintenance Manual

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BIOSTRENGTH LINE: Service & Maintenance manual - rev. 2.1
Page 3.5
It is powered by receiving, as input, a 38Vac/6A secondary power from the specific LP transformer,
which stabilizes (via a 20-A external jumper) at 48 Vdc for the motor and 5 and 12 Vdc for the
internal logic.
There are 3 LEDs on the board:
LED Description
DL
1 w
ith the limit switches enabled, it is ON if the
front
microswitch is resting, or OFF if the microswitch is pressed
DL2
w
ith the limit switches enabled, it is ON if the
rear
microswitch is resting, or OFF if the microswitch is pressed
DL3 It is ON when the board microswitch is properly “functional”
The board uses to power the motor 2 10A relays.
3.1.11. W
IRE ENCODER
The wire encoder is located inside the weight stack, attached to a later column, with the wire
fastened to the first plate in the weight stack to measure its position. Moving the weight stack
shortens or lengthens the wire, and the encoder outputs a number of pulses to the Bio servo board in
proportion to the linear movement of the wire.
In order to function properly, it must be powered at 12 Vdc, with a current of at least 100 mA.
3.1.12. S
OLENOID
The solenoid is located on the first plate in the weight stack. A pin may be shifted inside it, used to
select the additional weight of 2.5 Kg on all machines, except for the Leg Press, where it is 5 Kg.
When the solenoid is energized, the pin is inside and does not select the additional weight; when it
is not energized, the pin is pushed out by a spring to select the additional weight.
In order to function properly, it must be powered at 24 Vdc that it receives form the Bio servo
board.
3.1.13. W
EIGHT STACK MOTOR
The weight stack motor moves the chain, connected to the slide that selects the desired weight. This
is a 24-V, 5-A DC motor complete with:
•
an internal reducer (1:79);
•
a Hall sensor to measure the rpm (encoder) and supply a square-wave output signal with a duty
cycle of 50%.
In order to function properly, it must be powered at 24 Vdc that it receives form the Bio servo
board.
3.1.14. S
EAT MOTOR
This is a linear actuator equipped with: