Connection Of Stand-Alone Option Unit; Connection Of A Dedicated External Brake Resistor (Mrs Type, Mys Type, Fr-Abr) (Fr-E720-030 Or More, Fr-E740-016 Or More) - Mitsubishi Electric FR-E720-600 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)
(FR-E720-030 or more, FR-E740-016 or more)
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
FR-ABR
NOTE
The brake resistor connected should only be the dedicated brake resistor.
FR-E720-030, 050
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Brake resistor
FR-E720-240 to 600
Connect the brake resistor across terminals P/+ and PR. Connect the brake resistor across terminals P/+ and PR.
Jumper*
Brake resistor
* Do not remove a jumper across terminal P/+ and P1 except when connecting a DC reactor.
Pr. 30 Regenerative function selection
Setting
0 (initial value)
1
Jumper*
Terminal P/+
Terminal PR
Terminal P/+
Terminal PR
Connection of stand-alone option unit
Pr. 70 Special regenerative brake duty Setting
FR-E720-330 or less
FR-E740-170 or less
FR-E720-470 or more
FR-E720-080 to 175
FR-E740-016 to 095
Terminal PR
Brake resistor
FR-E740-120, 170
Jumper*
Terminal P/+
Terminal PR
Brake resistor
—
10%
Refer to page 122
6%
Jumper*
Terminal P/+
2
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