Mitsubishi Electric FR-F700PJ Series, Instruction Manual

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Connection of stand-alone option unit
2.4 Connection of stand-alone option unit
The inverter accepts a variety of stand-alone option units as required.
Incorrect connection will cause inverter damage or accident. Connect and operate the option unit carefully in accordance with
the corresponding option unit manual.
2.4.1 Connection of a dedicated external brake resistor (MRS type, MYS type, FR-ABR)
Install a dedicated brake resistor (MRS type, MYS type, FR-ABR) outside when the motor driven by the inverter is made to run
by the load, quick deceleration is required, etc. Connect a dedicated brake resistor (MRS type, MYS type, FR-ABR) to
terminals P/+ and PR. (For the locations of terminals P/+ and PR, refer to the terminal block layout
(page 20) .)
Set parameters below.

Do not remove a jumper across terminal P/+ and P1 except when connecting a Filterpack or a DC reactor.

The shape of jumper differs according to capacities.
Connected Brake Resistor Pr. 30 Regenerative function selection Setting Pr. 70 Special regenerative brake duty Setting
MRS type, MYS type 0 (initial value) —
MYS type
(used at 100% torque/6%ED)
1 6%
Refer to
page 131
FR-ABR 1
7.5K or lower 10%
11K or higher 6%
FR-F720PJ-1.5K to 3.7K
FR-F740PJ-0.4K to 3.7K
FR-F720PJ-0.4K, 0.75K
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
FR-F720PJ-5.5K, 7.5K
FR-F740PJ-5.5K to 15K
FR-F720PJ-11K, 15K
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Terminal P/+
Brake resistor
Jumper
*1
Terminal PR
Terminal PR
Brake resistor
Jumper
*1
Terminal P/+
Terminal PR
Brake resistor
Jumper
*1, *2
Terminal P/+
Brake resistor
Terminal PR
Terminal P/+
Jumper
*1