Mitsubishi Electric FR-A700 Technical Manual page 297

2.13.3 Selection of regenerative brake and DC feeding [Pr. 30, 70]
When making frequent starts/stops, use the optional high-
duty brake resistor (FR-ABR), brake unit (FR-BU2, 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 regeneration status.
A700 F700
[Pr. ] Name
Regenerative function
30
selection
Special regenerative
70
brake duty
E700 D700
[Pr. ] Name
Regenerative function
30
selection
Special regenerative
70
brake duty
Initial Setting
Value Range
0
Built-in brake resistor,
10
without regeneration function, brake
unit (FR-BU2, BU, BU type)
20
1
High-duty brake resistor,
11 Brake unit (MT-BU5),
0
Power regeneration converter (MT-
21
RC)
High power factor converter (FR-HC,
MT-HC),
2
Power regeneration common
converter (FR-CV)
55K or 0 to
less 30% Set the %ED of the transistor operation when using a built-
0%
75K or 0 to
in brake resistor and brake unit (MT-BU5).
more 10%
Initial Setting
Value Range
Without regenerative function,
Brake resistor (MRS type),
0 Brake unit (FR-BU2)
Power regeneration common converter (FR-CV)
0
High power factor converter (FR-HC)
1 High-duty brake resistor (FR-ABR)
High power factor converter (FR-HC) when automatic restart after
2
instantaneous power failure is selected
0% 0 to 30% Brake duty when using the high-duty brake resistor (FR-ABR)
Use a high power factor converter (FR-HC, MT-HC) to
reduce harmonics,
continuously use the regeneration mode.
In addition, 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, S, T) and performed with DC power
such as battery at occurrence of power failure can be
selected.
Description
Regeneration unit
Description
Regeneration unit
331
PARAMETER
common
(common)
improve the power factor,
Available
Inverters
Terminal for
power supply to
A700
the inverter
R, S, T
P, N
(DC feeding mode 1)
R, S, T/P, N
(DC feeding mode 2)
R, S, T
P, N
(DC feeding mode 1)
R, S, T/P, N
(DC feeding mode 2)
P, N
or
F700
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