Mitsubishi FR-A740-00023-EC - Selection of Regenerative Brake and DC Feeding (Pr. 30, Pr. 70)

198
Motor brake and stop operation
4.14.2 Selection of regenerative brake and DC feeding (Pr. 30, Pr. 70)
<01800 or less>
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 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.
Parameter
Number
Name
Initial
Value
Setting Range Description
30
Regenerative function
selection
0
Regeneration unit
Terminal for power
supply to the inverter
0
Built-in brake resistor, without
regenerative function, brake
unit (FR-BU2 [other than MT-
BU5 mode]
, 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 feeding mode 2)
1
High-duty brake resistor, brake
unit (FR-BU2 [MT-BU5 mode],
MT-BU5), power regeneration
converter (MT-RC)
R/L1, S/L2, T/L3
11
P/+, N/-
(DC feeding mode 1)
21
R/L1, S/L2, T/L3 - P/+, N/-
(DC feeding mode 2)
2
High power factor converter
(FR-HC, MT-HC), power
regeneration common
converter (FR-CV)
P/+, N/-
70
Special regenerative
brake duty
0%
01800 or
less
0 to 30%
Set the %ED of the built-in brake transistor operation.
02160 or
more
0 to 10%
Regeneration Unit
Power Supply to
the Inverter
Pr. 30
Setting
Pr. 70
Setting
Remarks
Built-in brake (00250 or less) ,
brake unit (FR-BU2
, FR-BU, BU)
R/L1, S/L2, T/L3
0
(initial value)
⎯
The regenerative brake duty is as follows.
⋅ FR-A740-00023 to 00250 . . . 2%
⋅ Other than the above . . . . . . 0%
(without built-in brake resistor)
P/+, N/- 10
R/L1, S/L2, T/L3 -
P/+, N/-
20
High-duty brake resistor (FR-ABR)
(00620 or less)
R/L1, S/L2, T/L3 1
10/6%
Change the setting according to the
capacity.
(00250 or less / 00310 or more)
P/+, N/- 11
R/L1, S/L2, T/L3 -
P/+, N/-
21
High power factor converter (FR-HC),
power regeneration common
converter (FR-CV)
P/+, N/- 2
0
(initial value)