Technogym Jog Now Excite+ 500, Service Maintenance Manual

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JOG NOW : Service & maintenance manual - rev. 5.1
Page 3.20
3.15.4. T
HE SIGNALS INVOLVED
The machine uses the following control signals:
•
RS-485 Signal
This is a digital signal exchanged between the driver and the CPU board.
• Motor voltage signal (Vdc)
This is the DC voltage generated by the driver ( pins 2 and 1 of connector J7 ) for supplying the
elevation motor. Its absolute value is 24Vdc and, depending on its polarity, it causes the motor
to rotate in either a clockwise or anticlockwise direction. The incline of the machine will
increase or decrease accordingly.
• Pulse signal
This is a square wave signal with frequency 50 Hz (T=20 msec) and 50% duty cycle generated
by the Hall sensor when the elevation motor moves. This signal enters the driver ( pins 6 and 4 of
connector J7 ) and provides the feedback of the motor movement.
This signal alternates between a low value of 0Vdc and a high value of 5Vdc. When measured
with a multimeter, this signal is at either 0 or 5Vdc when the motor is stopped, while during
motor movements it is approximately 2.5Vdc.
In order to function correctly, the Hall sensor requires a +5Vdc supply voltage which it receives
from the elevation board ( pins 5 and 4 of connector J7 ).
•
Limit switch signal
The limit switch is a NC contact entering the Driver (
pins 3 and 8 of connector J8
), which opens
when the machine pressed it during the power-on reset procedure.