Specialized Concentrated Focused
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16
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Principle of System Signal
2.2. Open Collector Output Signal
The output ports on the control box are open collector output, with maximum output current 500mA.
2.3. Differential Output Signal
Differential signal refers to two equivalent signals with opposite phases sent by driving end, and the
voltage difference of these two signals is used for deciding whether the logical status of differential signal
is
―0‖ or ―1‖.
Pulse command format of controlling driver motion is pulse + direction, negative logic. And this signal
adopts differential signal transmission mode.
2.4. Analog Output Signal
SVC is controllable voltage output of 0~10V and externally connected with analog voltage frequency
command inputs of inverter. Therefore, altering the controllable voltage leads to inverter frequency
change and a change of inverter frequency will change the spindle speed.
A n a lo g
4 7
Ω
+
-
S V C
+ 2 4 V
T e r m in a l B o a r d
Fig. 2-5 Electric circuit of analog output signal
