3.4.4 Digital input terminal wiring The digital input (DI) terminal of EA190 series servo driver has a full-bridge rectifier circuit. Through the terminal current can be forward (NPN mode) or reverse (PNP mode). Take DI1 for example. DI1~DI8 have the same interface circuits. 1) When the higher-level device has relay output: Use the internal 24 V power Use an external 24 V power source source of the servo Not use a single power source for power supply +24 V power source Servo driver +24 V power source Servo driver +24 V power source Relay Relay Relay Fig.
3-6 Wiring of the digital input terminal when the higher-level device has relay output 2) When the higher-level device has NPN open-collector output: When NPN input of the internal 24 V power source of the servo is used Servo driver When NPN input of an external 24 V power source is used Servo driver +24 V power source +24 V power source Fig. 3-7 (a) Wiring of the digital input terminal when the higher-level device has NPN open-collector output 3) When the higher-level device has PNP open-collector output:
When PNP input of the internal 24 V power source of the servo is used Servo driver Servo driver When PNP input of an external 24 V power source is used +24 V power +24 V power source source Fig. 3-7 (b) Wiring of the digital input terminal when the higher-level device has PNP open-collector output 28 Technical Manual for EA190 Series Servo Driver V100 Caution☞ In this Manual, the following content is provided in default: The COM terminal has 7 pins; the user may also use 22/36 pins. The GND terminal has 14 pins; the user may also use 29 pins. The internal +24V power source of the servo uses 25 pins; the user may also use 40 pins Caution☞ 1.
When an external power source is used, do make sure the circuit between 24V and COM+ terminals is open 2. Mixed use of PNP and NPN is not supported