Technical Manual for EA350 Analog Pulse Type Servo Driver V101 Chapter 3 Connection 3.1 Connection of Peripheral Device Note 3 Precautions: 1) The servo driver is directly connected to an industrial power source, without use of a transformer or other device for power isolation. To prevent cross electric shock of the servo system, a fuse or circuit breaker for wiring may be used on the input power. 2) It is strictly forbidden to install an electromagnetic contactor between the driver and the motor; otherwise damage may be caused to the driver.
3) When an external control power and 24V power is connected, attention shall be paid to the power capacity; particularly when power is supplied to several drivers or brakes, insufficient power capacity may cause insufficient current, resulting in damage to the drivers or brakes. 4) Note that if a brake uses a 24V DC power source, the capacity of the power source shall conform to the power requirement of the brake. For brake power, refer to introduction to the servo motor.
5) Check to make sure the output terminals U, V and W of the servo motor are correctly wired in the phase sequence; incorrect wiring may cause a rotation failure or error of the motor to trigger a warning, or even cause damage to the motor. 6) When an external braking resistor is used, it is required to have terminals P+ and D open; the external braking resistor shall be connected to terminals P+ and C. If an internal braking resistor is used, it is required to short-circuit terminals P+ and D and leave terminals P+ and C open (refer to Section 2.7). 7) Upon single-phase 220V wiring, the main power terminals are L1 and L2; if there is a terminal L3, it shall not be wired.
8) CN2 and CN3 are communication interfaces with identical pin definition, and either can be selected for use. 22