Mitsubishi Electric 800 Series Instruction Manual page 40

Connection of the provided brake resistor (FR-A860-00090 or lower)
Connecting the brake resistor provided with the unit to the FR-A860-00090 or lower will improve regeneration capability.
• Installation procedure
(1) Remove the wiring cover of the inverter, and punch out the knockout hole on the wiring cover for wiring the provided
brake resistor. After making the knockout hole, reinstall the wiring cover of the inverter.
(For the methods to remove the wiring cover and to punch out the knockout hole, refer to
(2) Connect the provided brake resistor to the inverter with provided screws.
(3) Make cuts in the provided protective bush with a nipper, a cutter knife, etc. and attach it to the knockout hole on the wiring
cover for wiring the provided brake resistor. Connect the provided brake resistor cable with red sleeve to terminal PR, and
the cable with transparent sleeve to terminal P3. (For the details of the terminals PR and P3, refer to
Protective bush
(4) Install the inverter on a strong surface securely with screws.
NOTE
• The provided brake resistor cannot be used together with another brake resistor or a brake unit.
• Connecting the provided brake resistor changes the protective structure to OPEN type (NEMA1).
• To avoid wire offcuts and other foreign matter to enter the inverter, the provided protective bush must be installed to the wiring
cover.
(Transparent sleeve)
(Red sleeve)
To terminal P3
To terminal PR
Knockout hole for wiring of
the provided brake resistor
Main circuit terminals
page 37 and 38.)
page
Protective bush
INSTALLATION AND WIRING
35.)
2
39