● Wiring for using an external 24V power source and external current-limiting resistor Fig. 3-12 (b) Wiring diagram for open-collector input of pulse command (using an external power source and external current-limiting resistor) The current-limiting resistor R1 is selected as follows: Resistor R1 shall be selected to satisfy the formula: Recommended resistance for R1: ● Example of typical incorrect wiring 32 Technical Manual for EA190 Series Servo Driver V100 VCC voltage R1 resistance R1 power 24V 2.0K 0.5W 12V 0.8K 0.5W Caution☞ 1.A pair of differential signals shall use a twisted-pair cable.
2.The pulse input signal cable must be run separately from the power cable, with at least 30cm or greater spacing. 3.The pulse input interface is not a shielded input interface. To reduce noise disturbance, it is recommended to connect the output signal ground of the upper computer and the signal ground of the driver.