VFDs of the 030G/037P and lower models need inter
Appendix C
170
VFD model
Input filter
Output filter
132G/160P-4
160G/185P-4
FLT-P04400L-B
FLT-L04400L-B
185G/200P-4
200G/220P-4
220G/250P-4
FLT-P04600L-B
FLT-L04600L-B
250G/280P-4
280G/315P-4
315G/355P-4
FLT-P04800L-B
FLT-L04800L-B
355G/400P-4
400G-4
450G-4
FLT-P041000L-B
FLT-L041000L-B
500G-4
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.
Connect the braking resistor or braking unit with the VFD according to the
diagram. Incorrect wiring may cause damage to the VFD or other devices.
nal braking units and
the VFDs of the 037G/045P and higher models need external braking units. Please select the
resistance and power of the braking resistors according to actual utilization.
Note:
Select the resistor and power according to the provided data.