Technogym BIOSTRENGTH LINE, Руководство по техническому обслуживанию

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BIOSTRENGTH LINE: Service & Maintenance manual - rev. 2.1
Page 3.15
powered (24 Vdc). Thus the motor turns counter-clockwise as long as the motor up signal is
high. The motor stops as soon as the signal returns to being low.
The figure below shows the switching of the motor up signal to turn the motor counter-
clockwise:
Figure 3.3.4
•
Motor down signal on (
↓↓↓↓
)
This is the signal generated by the CPU (pin 5-1 on connector K4) to enable the weight stack
motor to move clockwise, to select a lower weight. This signal enters the Bio servo board (pins
5-1 on connector CN7), and is processed by the latter to pilot the weight stack motor with the
proper supply voltage.
The control logic states that when the motor down signal is low (~ 0 V) the motor is stopped and
thus not powered (0 Vdc), while when the signal is high (~ 4 V) the motor moves because it is
powered (-24 Vdc). Thus the motor turns clockwise as long as the motor up signal is high. The
motor stops as soon as the signal returns to being low.
The figure below shows the switching of the motor signal to turn the motor clockwise:
Figure 3.3.5
•
Alarm signal
This is the signal generated by the Bio servo board (pins 7-1 on connector CN7) when a surge
current is detected on the motor. This signal is sent to the CPU board (pin 7-1 on connector K4).