Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 75 / 608

Wiring Connection of stand-alone option units
FR-E700 SC EC/ENE 3 - 39
3.8.2 Connection of a dedicated external brake resistor FR-ABR
(FR-E720S-030SC or more, FR-E740-016SC 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) to te and PR (resp.
P/+ and PR). (For the locations of te and PR (resp. P/+ and PR), refer to the terminal block layout
(section 3.3.2).)
Set parameters below (refer to section 6.9.2).
FR-E720S-030SC
Connected Brake
Resistor
Parameter Setting
Pr. 30 "Regenerative
function selection"
Pr. 70 "Special regenerative brake duty"
FR-ABR 1
FR-E720S-110SC or less
FR-E740-170SC or less
10 (%)
FR-E740-230SC or more 6 (%)
Tab. 3-20: Setting of parameter 30 and 70 when connecting an external brake resistor
E
CAUTION:
●
The brake resistor connected should only be the dedicated brake resistor.
●
Do not remove a jumper across te and P1 (resp. P/+ and P1) except when connecting
a DC reactor.
●
The shape of jumper differs according to capacities.
Fig. 3-31:
Connection of a brake resistor to the ter
and PR for the inverter FR-E720S-030SC
I002036E
Te
Brake resistor
Terminal PR
Jumper