EA180 Series Servo Drive Users Manual Figure 3-20 Brake signal and power supply wiring 3.7.1 Notes for brake wiring: 1) The intermediate relay must be controlled through the signal terminal (DO2 +, DO2- in the above figure) defined as function 2 (BK), and the brake power supply is switched on and off by the NO contacts of the intermediate relay. 2) There is no need to distinguish the polarity of the brake coil, and the brake is in release state when powered on (at this time, the brake pads are separated and there is no braking force). 3) Be sure to use external power supply for the brake.
Internal DC 24V power supply can be used for the intermediate relay coil, and it is not recommended that the relay coil and brake share the same power supply when an external power supply is used. 4) When using an external power supply for the intermediate relay coil, please note that the DO2+ terminal should be connected to the positive terminal and the DO2- terminal should be connected to the negative terminal of the power supply. 5) The operation of brake requires an input voltage of at least 21.5 V, so the voltage drop caused by the power cable resistance needs to be fully considered, and cables above 0.5 mm 2 are recommended. Refer to Chapter 10 for specific parameters of brake power.
6) It is better not to share a power supply with other electrical appliances to prevent voltage or current drop due to the work of other electrical appliances, which will eventually lead to misoperation of the brake. 3.7.2 Brake action timing sequence 3.7.2.1 The brake has an action delay time. Please refer to the following figure for the release and engagement delay time of the brake.
Servo enable (/S-ON) Motor ON P0-11 Brake command Brake Position/speed/ torque command Motor speed Figure 3-21 Brake release and engagement delay time 38 MCCB MC EMI Filter L1C +24V L2C 25 L1 DO2 set to L2 BK signal 23 L3 38 7 U V W PE CN5 L N DC24VPower supply for brake DO2+ DO2- Intermediate relay Brake COM cable DO2+ 38 DO2- Intermediate relay COM OFF ON OFF ON OFF OFF ON ON *3 OFF OFF *1 Engaged *1 Released Command not re Command received ceived Command received 0 rpm P0-16 *2