User Manual of EM730/EM730E Series Inverter
262
“detection level - hysteresis”, the ADT function will be invalid.
Function
code
Function code
name
Parameter description
Unit Default setting Attribute
F15.30
Options of energy
consumption
braking function
0: Invalid
1: valid
0
〇
F15.31
Energy
consumption
braking voltage
110.0-140.0 (380V, 100.0 =
537V)
%
125.0(671V)
〇
F15.32 Braking rate
20-100 (100 means that
duty ratio is 1)
%
100
●
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 10.1Braking Resistor and
Time t
Bus voltage
0
Energy consumption
braking voltage F15.30
Time t
Energy consumption
braking
0
Braking
No braking
No braking
Fig. 7-39 Schematic Diagram of Energy Consumption Braking
In the case of valid energy consumption braking (F15.30=1), as shown in Fig. 7-39, 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 of braking is.
