Connection Of A Dedicated External Brake Resistor Fr-Abr And Mrs (Fr-E720S-030 Or More, Fr-E740-016 Or More) - Mitsubishi Electric FR-E700 Instruction Manual

Connection of stand-alone option units
3.7.2 Connection of a dedicated external brake resistor FR-ABR and MRS
(FR-E720S-030 or more, FR-E740-016 or more)
Install a dedicated brake resistor (FR-ABR) outside when the motor is made to run by the load,
quick deceleration is required, etc. Connect a dedicated brake resistor (FR-ABR or MRS) to
terminal + and PR. (For the locations of terminal + and PR, refer to the terminal block layout
(section 3.3.2).)
Set parameters below (refer to section 6.9.2).
Connected brake
resistor
MRS
FR-ABR
Tab. 3-14: Setting of parameter 30 and 70 when connecting an external brake resistor
b
CAUTION:
● The brake resistor connected should only be the dedicated brake resistor.
● Do not remove a jumper across terminal + and P1 except when connecting a DC
reactor.
● The shape of jumper differs according to capacities.
FR-E720S-030
3 - 28
Pr. 30 „Regenerative
function selection"
0 (initial value)
1
Jumper
Terminal +
Brake resistor
Parameter setting
Pr. 70 „Special regenerative brake duty"
FR-E720S-110 or less
FR-E740-170 or less
FR-E740-230 or more
Fig. 3-18:
Connection of a brake resistor to the terminals
+ and PR for the inverter FR-E720S-030
Terminal PR
Wiring
—
10 (%)
6 (%)
I002036E