Connection Of Stand-Alone Option Unit; Connection Of A Dedicated External Brake Resistor (Mrs Type, Mys Type, Fr-Abr) - Mitsubishi Electric 700 Series Instruction Manual

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 is made to run by the load, quick
deceleration is required, etc. Connect a dedicated brake resistor (MRS type, MYS type, FR-ABR) to terminal P/+ and PR.
(For the locations of terminal P/+ and PR, refer to the terminal block layout (page 15).)
Set parameters below.
Connected Brake Resistor
MRS type, MYS type
MYS type
(used at 100% torque / 6%ED)
FR-ABR
FR-E720-0.4KNF, 0.75KNF
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Brake resistor
FR-E720-5.5KNF to 15KNF
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Jumper
*1
Brake resistor
∗1
Do not remove the jumper across terminals P/+ and P1 except when connecting a DC reactor.
∗2
The shape of jumper differs according to capacities.
Pr. 30 Regenerative function
selection Setting
0 (initial value)
1
1
Jumper
*1
Terminal P/+
Terminal PR
Terminal P/+
Terminal PR

Connection of stand-alone option unit

Pr. 70 Special regenerative brake duty Setting
—
6%
7.5K or lower
11K or higher
FR-E720-1.5KNF to 3.7KNF
FR-E740-0.4KNF to 3.7KNF
Terminal PR
Brake resistor
FR-E740-5.5KNF to 15KNF
Jumper
Terminal P/+
Terminal PR
Brake resistor
Refer to page 136
10%
6%
Jumper
*1
Terminal P/+
*1*2
2
25