EA180 Series Servo Drive Users Manual Differential reception Figure 3-17 Frequency division output wiring diagram Optocoupler reception The encoder Z-phase frequency division output circuit can provide feedback signals through the collector open circuit signal, usually when the position control system is formed by the upper device and servo drive. In the upper device, it can receive signals through optocoupler and relay receiving circuit, with a maximum output current of 40mA.
DC5V ~ 24V Servo drive 35 OCZ 14 GND GND PE Figure 3-18 OCZ terminal wiring diagram 3.5 CN2 and CN3 communication terminal wiring The servo drive is connected to the upper device through two identical communication signal connectors CN2 and CN3 connected in parallel. Users can use MODBUS communication to operate the drive, with a communication distance of about 15m.
Table 3-10 Description of communication connector pins 36 Servo 28 13 12 27 11 26 14 PA+ Upper device GND PA- PB+ PB- PZ+ PZ- GND PE Servo 28 13 12 27 11 26 14 PA+ Upper device GND PA- PB+ PB- PZ+ PZ- GND PE Attention☞ Please be sure to connect the signal power supply ground of the upper device to the servo drive GND and use twisted pair shielded cables to reduce noise interference. The triode inside the drive has a maximum withstand voltage of DC30V and a maximum allowable input current of 40mA.
Signal Pin # Function Terminal pin distribution RS485+ 1 RS485 communication interface 1 8 RS485- 2 GND 3 RS485/RS232 communication reference ground RS232-RXD 4 The sender of RS232 is connected with the receiver of upper device RS232-TXD 5 The receiver of RS232 is connected with the sender of upper device GND ISO 6 CAN communication reference ground CANH 7 CAN communication port (This port is available only for CANopen bus type products) CANL 8