GD200A series VFD    Peripheral options and parts 
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Note: The input EMI meet the requirement of C2 after adding input filters. 
C.8 Braking system 
C.8.1 Select the braking components 
It is appropriate to use braking resistor or braking unit when the motor brakes sharply or the motor is 
driven by a high inertia load. The motor will become a generator if its actual rotating speed is higher 
than the corresponding speed of the reference frequency. As a result, the inertial energy  of the 
motor and load return to the VFD to charge the capacitors in the main DC circuit. When the voltage 
increases to the limit, damage may occur to the VFD. It is necessary to apply braking unit/resistor to 
avoid this accident happens. 
 Only qualified electricians are allowed to design, install, commission and operate 
on the VFD.   
 Follow the instructions in "warning" during working. Physical injury or death or 
serious property may occur.   
 Only qualified electricians are allowed to wire. Damage to the VFD or braking 
options and part may occur. Read carefully the instructions of braking resistors or 
units before connecting them with the VFD.   
 Do not connect the braking resistor with other terminals except for PB and (-). Do 
not connect the braking unit with other terminals except for (+) and (-). Damage to 
the VFD or braking circuit or fire may occur.