User Manual of EM760 High-Performance Inverter 6.6.14 Energy consumption braking Energy consumption braking is a braking method for quick deceleration by converting the energy generated in deceleration into the thermal energy of the braking resistor. It is suitable for braking under large-inertia loads or stop by rapid braking. In this case, it is necessary to select the appropriate braking resistor and braking unit, as detailed in 10.1 Braking resistor and 10.2 Braking unit. Fig.
6-36 Schematic Diagram of Energy Consumption Braking In the case ofvalid energy consumption braking (F15.30=1), as shown in the figure above, when the bus voltage is greater than the energy consumption braking voltage (F15.31),energy consumption braking will be started; and when the bus voltage decreases to less than the aforesaid value, energy consumption braking will be disabled. The IGBT in the braking unit is engaged during energy consumption braking. Energy can be quickly released by the braking resistor. The braking utilization rate (F15.32) is the duty cycle of IGBT running. The greater the duty cycle, the larger the degree ofbraking is.
6.6.15 Parameter locking 157 Function code Function codename Parameter description Unit Default setting Attribute F15.30 Options of energy consumption braking function 0: Invalid 1: valid 0 O F15.31 Energy consumption braking voltage 110.0~140.0 (380V,100.0=537V) % 128.5 O F15.32 Braking rate 20~100 (100 means that duty ratio is 1) % 100 ●