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Connection of stand-alone option unit
2
WIRING
2.4 Connection of stand-alone option unit
The drive unit accepts a variety of stand-alone option units as required.
Incorrect connection will cause drive unit 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)
(0.4K or higher)
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 to terminal P/+ and PR.
(For the locations of terminal P/+ and PR, refer to the terminal block layout (page 15).)
Set parameters below.
Do not remove a jumper across terminal P/+ and P1 except when connecting a DC reactor.
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)
16%
Refer to page
136
FR-ABR 1 10%
NOTE
The brake resistor connected should only be the dedicated brake resistor.
FR-E720EX-0.4K, 0.75K FR-E720EX-1.5K 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
Jumper
Terminal P/+
Terminal PR
Brake resistor
Jumper
Terminal P/+