● Three-phase power wiring (applicable to 4.8A and 6.2A) Single / three-phase Filter Servo driver Emergency stop Fig. 3-2 Three-phase power wiring diagram 3.2.3 Power connection sequence diagram Control circuit power Not powered Powered on Powered on Power source of main circuit Not powered Delay for 1.5 s Ready Valid Invalid Enable valid Enable invalid Motor d Motor not Delay for P0-16 d Receive commands Not receive commands Fig. 3-3 Power connection sequence diagram For power connection, refer to Fig. 3-1 and Fig. 3-2, and follow the sequence below:
1) Connect the power source via an electromagnetic contactor to the power input terminal of the main circuit (to L1, L2 and L3 in case of three phases, or to L1 and L2 in case of two phases). 2) Upon the lapse of about 2.5s delay after the main circuit is powered on, the servo ready signal (SRDY) becomes valid; at this time, servo on (S-ON) signal can be received. When valid servo on signal is detected, the motor is excited and enters into the operating status. When invalid servo on signal or a warning is detected, the driver output is turned off, and the motor enters the free status.
3) When the servo on and the power source are connected simultaneously, the motor will be excited upon the lapse of about 2.5s. 4) Frequent power on/off of the main circuit may cause damage to the soft start circuit and the dynamic braking circuit; the power-on/off frequency shall be preferably limited to 5 times per hour and less than 30 times a day. If the drive unit or the motor become overheated, after elimination of the fault, it is required to leave the unit or motor to cool for 30 minutes before powering on it again. 5) Never connect the input power cable to an output terminal U, V or W; otherwise damage may be caused to the servo driver.
6) Never connect the braking resistor directly between the P+ and - terminals of a DC bus; otherwise a fire may be caused. 7) When the power is turned off, residual voltage may exist on the internal capacitor of the servo driver; check to confirm the CHARGE indicator light on the servo driver panel is off before conducting inspection. 21 Technical Manual for EA190 Series Servo Driver V100 The servo is ready for output (S-RDY) Not ready Servo on signal (S-ON signal) Invalid Servo on (S-ON) Enable invalid Servo motor excitation Motor not powered on Position / speed / torque commands Not receive commands