according to 100% rated current of the servo motor; in this case, the driver will directly enter the alarm state. This parameter can be used to set the threshold for motor overload warning. Once the detected motor overload exceeds this set value, a motor overload warning will be given, but the motor will not stop running. Parameter functions: Set resistance of a braking resistor. It cannot be changed when a built-in braking resistor is used. When an external braking resistor is used, setting shall be performed based on the actual resistance; besides, the resistance of the braking resistor shall not be less than that provided in section 2.7.1. Parameter functions:
Set power of a braking resistor. It cannot be changed when a built-in braking resistor is used. Setting shall be made based on the actual power of the external braking resistor. Incorrect setting may cause damage to the resistor due to overheat or result in frequent alarms of the driver. Parameter functions: Duty cycle of the brake pipe upon braking When P8-12 is set to 100, the brake duty cycle is 100%; namely, the brake pipe is fully open during braking; When P8-12 is set to 0, the brake duty cycle is 0%; namely, the brake pipe is fully closed during braking (no braking resistor is used). Generally this parameter requires no adjustment.
If during running, the alarm is prone to occur, the user may set an appropriately larger value. Parameter functions: Set the derating of a braking resistor. It cannot be changed when a built-in braking resistor is used. This parameter is intended to prevent damage of the braking resistor due to overheating. When an external braking resistor is used, if the resistor can withstand the power set by P8-11 for a long time, then the parameter can be set to 100; otherwise the setting shall be derated based on the actual conditions of the braking resistor.
157 Technical Manual for EA190 Series Servo Driver V100 P8-10 Braking resistance setting Initial value 50 Communication address 080AH Unit Ω Time of taking effect With immediate effect Setting range 20~30000 Data size 16bit Control mode P S T P8-11 Braking resistor power setting Initial value 100 Communication address 080BH Unit W Time of taking effect With immediate effect Setting range 10~30000 Data size 16bit Control mode P S T P8-12 Brake duty cycle Initial value 30 Communication address 080CH Unit % Time of taking effect With immediate effect Setting range 0~100 Data size 16bit Control mode P S T P8-13 Braking resistor derating percentage Initial value 40 Communication address 080DH Unit % Time of taking effect Taking effect upon power-on again Setting range 1~100 Data size 16bit Control mode P S T P8-14 Minimum load for judgment of motor locked-rotor Initial value 150.0 Communication address 080EH Unit % Time of taking effect With immediate effect Setting range 10.0~250.0 Data size 16bit Control mode P S T