Connection Of Stand-Alone Option Unit; Connection Of A Dedicated External Brake Resistor (Mrs Type, Mys Type, Fr-Abr); Emc And Leakage Currents - Mitsubishi Electric FR-F700PJ Instruction Manual

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.
Connected Brake Resistor
MRS type, MYS type
MYS type
(used at 100% torque/6%ED)
FR-ABR
FR-F720PJ-1.5K to 3.7K
FR-F740PJ-0.4K to 3.7K
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Terminal PR
Brake resistor
FR-F720PJ-5.5K, 7.5K
FR-F740PJ-5.5K to 15K
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Terminal P/+
Brake resistor

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.
34
Pr. 30 Regenerative function selection Setting
0 (initial value)
1
1
Jumper
*1
Terminal P/+
Jumper
*1, *2
Terminal PR
Pr. 70 Special regenerative brake duty Setting
6%
7.5K or lower
11K or higher
FR-F720PJ-0.4K, 0.75K
Jumper
Terminal P/+
Brake resistor
FR-F720PJ-11K, 15K
Terminal P/+
Jumper
*1
Brake resistor
—
Refer to
10%
page 131
6%
*1
Terminal PR
Terminal PR