Technical Manual for EA350 Analog Pulse Type Servo Driver V101 3.2.3 Power connection sequence diagram Fig. 3-4 Power connection sequence diagram For power connection, refer to Fig. 3-1, Fig. 3-2 and Fig. 3-3, and follow the sequence below: 1) The power L1C and L2C for circuit control must be connected before the main circuit or concurrently with the power of the main circuit. If only the power to control circuit is connected, the S-RDY signal will not be valid. 2) 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).
3) Upon the lapse of about 1.5s 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. 4) When the servo on and the power source are connected simultaneously, the motor will be excited upon the lapse of about 1.5s.
5) 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. 6) Never connect the input power cable to an output terminal U, V or W; otherwise damage may be caused to the servo driver. 7) Never connect the braking resistor directly between the P+ and terminals of a DC bus; otherwise a fire may be caused.
8) 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. 3.2.4 Specification of the motor power cable connector Table 3-2 Motor power cable and servo motor connection terminal 26 Connector appearance and model Pin distribution of the terminal Motor flange Housing model: 172159-1 TE MATE-N-LOCK Insert model: 170362-1 TE MATE-N-LOCK 4-pin AMP connector (excluding brake) 40 60 80 86 Pin number Function definition 1 U 2 V 3 W 4 PE Type:
YD28K4TS Aviation plug (excluding brake) 110 130 (SER series) Pin number Function definition 1 PE 2 U 3 V 4 W