Mitsumi electronic FR-CV-7.5K to 30K(-AT) ユーザーズマニュアル

4

The following devices are required to operate the power regeneration common converter. Proper peripheral devices
must be selected and correct connections made to ensure proper operation. Incorrect system configuration and
connections can cause the inverter to operate improperly, its life to be reduced considerably, and in the worst case,
the inverter to be damaged.
Please handle the product properly in accordance with the information in each section as well as the precautions
and instructions of this manual. (For connections of the peripheral devices, refer to the corresponding manuals.)

Note: If connected to the inverter, the power factor improving DC reactor (FR-BEL) does not produce an effect on

power factor improvement. In addition, do not use the power factor improving AC reactor (FR-BAL) since
using it may degrade the power regeneration function.

(MC)

(ELB)

or

(NFB)

Earth(Ground)

Earth
(Ground)

Earth
(Ground)

Power regeneration
common converter
(FR-CV)

Dedicated Stand-alone
reactor (FR-CVL)

Earth(Ground)

Name

Description

Power supply

Use the power supply within the permissible power 
supply specifications of the power regeneration 
common converter.
(Refer to page 44.)

Earth leakage 
circuit breaker 
(ELB) or no-fuse 
breaker(NFB)

The breaker should be selected with care since a 
large inrush current flows in the power regeneration 
common converter at power on. (Refer to page 26.)

Magnetic 
contactor

Install the magnetic contactor to ensure safety. 
When installed, do not use it to start or stop the 
inverter. It might reduce the power regeneration 
common converter life.
(Refer to page 26.)

Installation of 
dedicated 
stand-alone 
reactor

Power 
regeneration 
common 
converter

Incorrect wiring might lead to power regeneration 
common converter damage. The control signal lines 
should be kept away from the main circuit to protect 
them from noise.

Inverter

•Use the compatible inverter.
•The inverter life is influenced by ambient 

temperature.The ambient temperature should be 
as low as possible within the permissible range.
This must be noted especially when the inverter is 
installed in an enclosure .

•Incorrect wiring might lead to inverter damage.The 

control signal lines should be kept away from the 
main circuit to protect them from noise. 

Devices 
connected to the 
output

Do not connect a power capacitor, surge suppressor 
or radio noise filter to the output side.

Earth(Ground)

To prevent an electric shock, always ground the 
dedicated stand-alone reactor, power regeneration 
common converter, motor and inverter.
The grounding cable provided for reduction of 
induction noise from the power line of the inverter is 
recommended to be wired by returning it to the 
grounding terminal of the inverter. 

Note: Note that when an electromagnetic 

contactor (MC) and a  no-fuse breaker 
(NFB) are installed, switching off the 
inverter during operation, then on again 
will cause a starting current to flow, 
affecting the inverter and motor.  When 

installing a no-fuse breaker (NFB) on the 
output side, contact the NFB manufacturer 
for selection of no-fuse breaker.