Connection Of Stand-Alone Option Unit; Connection Of A Dedicated External Brake Resistor (Mrs Type, Fr-Abr) - Mitsubishi Electric FR-E700 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, FR-ABR) (FR-E740-
016 or more, FR-E720S-030 or more)
Install a dedicated brake resistor (MRS 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, FR-ABR) to terminal + and PR.
(For the locations of terminal + and PR, refer to the terminal block layout (page 16).)
Set parameters below.
Connected Brake Resistor
MRS type
FR-ABR
NOTE
The brake resistor connected should only be the dedicated brake resistor.
FR-E720S-030
Connect the brake resistor across terminals + and PR.
Brake resistor
FR-E740-120 to 300
Connect the brake resistor across terminals + and PR.
Jumper
Terminal +
Brake resistor
∗1
Do not remove a jumper across terminal + 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
Jumper
*1
Terminal +
Terminal PR
*1*2
Terminal PR
Connection of stand-alone option unit
Pr. 70 Special regenerative brake duty Setting
FR-E740-170 or less
FR-E720S-110 or less
FR-E740-230 or more
FR-E740-016 to 095
FR-E720S-050 to 110
Connect the brake resistor across terminals + and PR.
Terminal PR
Brake resistor
—
10%
Refer to page 121
6%
Jumper
*1
Terminal +
2
29