EA180 Series Servo Drive Users Manual When the upper device is relay input, be sure to connect the flywheel diode, otherwise the DO port may be damaged. 2) When the upper device is optocoupler input Use internal power supply Use external power supply Use external power supply Current limiting resistor not Servo drive 25 +24V DC5V ~ 24V DC5V ~ 24V connected Servo drive 25 8 DO1 8 DO1 NPN 37 DO1- 37 NPN DO1- External power COM 22 COM 22 ground Fig. 3-11 (a) Correct wiring of digital output terminal when the upper device is optocoupler input Fig.
3-11 (b) Wrong wiring of digital output terminal when the upper device is optocoupler input 3.4.6 CN4 analog input terminal wiring AI1 and AI2 are generally used for speed or torque analog signal input. Servo drive -10~+10V -10~+10V Figure 3-12 AI1 and AI2 terminals wiring The position command pulse input signal and command symbol input signal terminals in the CN4 terminal will be described below.
3.4.7 CN4 position command input signal 31 Attention☞ Use internal power supply Current limiting resistor not connected +24V 25 Servo drive 8 DO1 NPN 37 DO1- COM 22 25 Servo drive 8 NPN 37 22 DO1 DO1- COM 25 Servo drive 8 NPN 37 22 DO1 DO1- COM External pow ground 37 COM Attention☞ The maximum allowable voltage and current of the optocoupler output circuit inside the servo drive are as follows: Voltage: DC30V (max) Current:
DC50mA (max) As for inductive loads (such as relays and contactors) are driven, a surge voltage absorption circuit should be installed, such as RC absorption circuit (note that its leakage current should be less than that of the control contactor or relay), varistor, or flywheel diode, etc. (for DC electromagnetic circuit, pay attention to polarity during installation). The components of the absorption circuit shall be installed near the coil of the relay or contactor. Signal Pin # Function Analog AI1 15 30 i Voltage analog nput Voltage input range:-10V ~ +10V resolution 12 bits Maximum allowable voltage: ±12 V Input impedance: 10K AI2 GND 29 Analog input ground V AI1 V AI2 Approx.
9K 15 30Approx. 9K 29 GND AI2