Mitsubishi Electric FR-A700 EC, Instruction Manual

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Parameter Motor brake and stop operation
FR-A700 EC 6 - 247
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.
No.
Name
Initial
Value
Setting Range Description Parameters referred to
Refer to
Section
30
Regenerative
function selection
0
Regeneration
unit
Terminal for po-
wer supply to the
inverter 57
178–189
190–196
261
Restart coasting
time
Input terminal
function selection
Ouput terminal
function selection
Power failure stop
selection 6.16.1
6.14.1
6.14.5
6.16.2
0
Built-in brake resis-
tor, without regen-
erative function,
brake unit (FR-BU,
BU type)
R/L1, S/L2, T/L3
10
P/+, N/- (DC feeding
mode 1)
20
R/L1, S/L2, T/L3 –
P/+, N/
−
(DC fee-
ding mode 2)
1
High-duty brake
resistor, brake unit
(MT-BU5), power
regeneration con-
verter (MTRC)
R/L1, S/L2, T/L3
11
P/+, N/- (DC feeding
mode 1)
21
R/L1, S/L2, T/L3 –
P/+, N/
−
(DC fee-
ding mode 2)
2
High power factor
converter (FR-HC,
MT-HC), power
regeneration com-
mon converter
(FR-CV)
P/+, N/
−
70
Special regenera-
tive brake duty
0 %
01800
or
less
0–30 %
Set the %ED of the built-in brake transi-
stor operation.
02160
or
more
0–10 %