
Using the R325P with more than 5V
You can choose to supply the optos with the R325P’s internal 5V supply by jumping pins 1 to 4.
But if you choose to use more than 5V, for example, a 24V supply and the step pulse train is also
a 0 to 24V low-high signal, please use the following recommended resistor to limit the current to
10 mAmps. Note: no resistor will be needed on the actual opto supply line, pin 1.
Step & Direction lines have a 470 ohm internal resistor
Table 6.1
Disable line has a 1k ohm internal resistor
Table 6.2
Configure the R325P using the DIP Switch
R325P DIP Switch Settings
Table 6.3
WARNING: Current of 2.7 Amp and above REQUIRES an additional heat sink; make
sure the temperature of the bracket does not exceed 45° C
R325P User Manual Page 10 of 20 5/29/2013 Version 1.01
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