3.4.5 Wiring of digital output terminal Take DO1 for example. DO1~DO4 have the same interface circuits.DO5 does not have terminal DO- (internal COM short-circuiting), only supporting internal power connection. 1) When the higher-level device has relay input 3.4.6 CN4 position command input signal Position command pulse input signal and command symbol input signal terminals in CN4 are described below. Table 3-6 Description of position pulse input signal Pulse command can be input by using the open-collector or the differential mode. In case of the differential mode, the maximum input pulse frequency is 500Kpps; in case of the open-collector mode, the maximum input pulse frequency is 200Kpps.
For the pulse input terminal, it is required to set a filter time to prevent entry of interference signal into the servo 29 Technical Manual for EA190 Series Servo Driver V100 Use of internal power Use of external supply power supply Rela Relay Servo driver y Servo driver Servo driver Servo driver Relay Polarity error No relay is of freewheel connected diode Fig. 3-8(a) Correct wiring of the DO terminal when the higher-level device has relay input Fig.
3-8(b) Incorrect wiring of the DO terminal when the higher-level device has relay input Caution☞ When the higher-level device has a relay input, do connect a freewheel diode; otherwise damage may be caused to the DO terminal 2) When the higher-level device has optical coupling input Use of internal Use of external Use of external power supply Use of internal power supply Servo driver Servo driver External power ground power supply N cuo r rc eo nn t-n le imct ie td ing power supply No connected resistor current-limiting resistor Servo driver Servo driver External power ground power supply N c o connected urrent-limiting sistor Fig.
3-9(a) Correct wiring of the DO terminal when the higher-level device has optical coupling input Fig. 3-9(b) Incorrect wiring of the DO terminal when the higher-level device has optical coupling input Caution☞ The maximum allowable voltage and current capacity of the optical coupling output circuit inside the servo driver: Voltage: DC30V (maximum) Current: DC50mA (maximum) If it drives an induced load (such as a relay or contactor), it is required to additionally install a surge voltage absorption circuit, such as:
RC absorption circuit (note that the leak current shall be smaller than the holding current of the control contactor or the relay), voltage-dependent resistor, or freewheel diode (for use in a DC electromagnetic circuit; special attention shall be paid to the polarity upon installation). The components of the absorption circuit should be installed close to both ends of the relay or contactor coil. Signal name Pin number Function Position command PULSE+ 33 Input mode of pulse command: Differential input Open input of collector Input pulse form:
Direction + pulse A, B-phase orthogonal pulse CW/CCW pulse PULSE- 34 SIGN+ 31 SIGN- 32 PULHIP 1 External power input interface of command pulse PULHIS 16 +24V 25/40 24V power positive end COM 36 24V power ground