Technogym JOG EXCITE, Руководство по техническому обслуживанию, Страница: 27 / 126

JOG EXCITE: Service & Maintenance Manual - rev. 1.1
Page 3.7
In such a case the AT driver halts the motor and outputs an alarm signal to the display board which
displays the “THE EQUIPMENT IS BLOCKED” message.
3.2.3. T
HE SIGNALS INVOLVED
The machine uses the following control signals:
•
RS-485 Signal
This is a digital signal exchanged between the AT driver and the display board.
•
Variable frequency VAC signal
This is the variable alternating-voltage signal output by the AT driver (pins 1-2-3 connector J5)
to supply the motor. Increasing the frequency of this signal increases the motor speed.
•
Thermal cut-out signal
Each motor phase is equipped with a normally-closed thermal cutout which opens when the
temperature exceeds a preset threshold. The 3 thermal cutouts are connected in series and exit
the motor via a 2-wire cable connected to the AT driver (pins 4-5 of connector J5).
When this input signal is an open contact, the AT driver detects the alarm, halts the motor and
sends an alarm signal over the RS-485 line to the display board.