RDC6585PC Control System manual
V1.0
SHENZHEN RUIDA TECHNOLOGY
25
6.1 Brief
The input signal end of step-servo motor driver employs the light-coupled isolation
technology. For the step-by-step impulse signal, some isolate the side OC diode from cutoff to
conduction (e.g. the valid falling edge of pulse signal inputted from the diode minus end) and
some do so from conduction to cutoff (e.g. the valid rising edge of pulse signal inputted from the
diode minus end).
When it is indicated whether the pulse signal of motor driver is the valid rising edge
or the valid falling edge, it will be subject to the pulse signal inputted from the minus end of
side OC diode.
Some input signals of motor driver are independent and some are internally of
common anode, so some have 4 external leading-out wires and some 3 wires (only the pulse and
directional signals are counted) as shown in Figure 6.1-1 and 6.1-2.
RDC6585PC Controller has eight groups of 3-wires motion driver interface, each interface
has one direction signal, one pulse signal, and one 5V positive output, the direction signal and
the pulse signal are all OC output.
RDC6585PC controller must be common anode with the motor driver. The polarity of
the direction signal can be changed in the factory parameters, and the valid edge of the pulse
signal can also be changed.
Figure: 6.1-1 Four Inputs, Independent
Input Signal of Driver
Figure: 6.1-2 Three Inputs, Common-anode
Input Signal of Driver
