Selection Of A Regenerative Brake (Pr. 30, Pr. 70) - Mitsubishi Electric FR-A700 Instruction Manual

Parameter
6.13.2

Selection of a regenerative brake (Pr. 30, Pr. 70)

● When making frequent starts/stops, use the optional high-duty brake resistor (FR-ABR),
brake unit (BU, FR-BU, MT-BU) to increase the regenerative brake duty.
● Use a power regeneration common converter (FR-CV) or power regeneration converter (MT-
RC) for continuous operation in regenerative status.
Use a high power factor converter (FR-HC, MT-HC) to reduce harmonics, improve the power
factor, or continuously use the regenerative mode.
● You can select either DC feeding mode 1 in which operation is performed with DC power
(terminal P/+, N/-) or DC feeding mode 2 in which operation is performed normally with the
AC power (terminal R/L1, S/L2, T/L3) and performed with DC power such as battery at
occurrence of power failure.
Pr. Initial
Name
No. Value
Regenerative
30
function selection
Special regenera-
70
tive brake duty
FR-A700 EC
Setting Range
Regeneration
unit
0
Built-in brake resis-
tor, without regen-
10
erative function,
brake unit (FR-BU,
BU type)
20
1
0
High-duty brake
resistor, brake unit
11
(MT-BU5), power
regeneration con-
verter (MTRC)
21
High power factor
converter (FR-HC,
MT-HC), power
2
regeneration com-
mon converter
(FR-CV)
01800
or 0–30 %
less
Set the %ED of the built-in brake transi-
0 %
stor operation.
02160
or 0–10 %
more
Description Parameters referred to
Terminal for po-
wer supply to the
inverter
R/L1, S/L2, T/L3
P/+, N/- (DC feeding
mode 1)
R/L1, S/L2, T/L3 –
P/+, N/− (DC fee-
ding mode 2)
R/L1, S/L2, T/L3
P/+, N/- (DC feeding
mode 1)
R/L1, S/L2, T/L3 –
P/+, N/− (DC fee-
ding mode 2)
P/+, N/−
Motor brake and stop operation
57 Restart coasting
time
178–189 Input terminal
function selection
190–196 Ouput terminal
function selection
261 Power failure stop
selection
Refer to
Section
6.16.1
6.14.1
6.14.5
6.16.2
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