Selection Of A Regenerative Brake And Dc Feeding (Pr. 30, Pr. 70) - Mitsubishi F700 Series Instruction Manual

Motor brake and stop operation
4.9.2

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

When making frequent starts/stops, use the optional brake unit (FR-BU2, BU, FR-BU, MT-BU5) 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 DC feeding mode 1, which operates with DC power supply (terminal P/+, N/-), or DC feeding
mode 2, which normally operates with AC power supply (terminal R/L1, S/L2, T/L3) and with DC power supply
such as battery at power failure occurrence.
Parameter
Name
Number
Regenerative
30
function
selection
Special
70 regenerative
brake duty
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 185)
*1 Used in combination with GZG, GRZG, or FR-BR.
*2 Used in combination with MT-BR5
<01160 or less>
Regeneration Unit
Inverter without regenerative function, brake
,
unit (FR-BU2 FR-BU, BU)
*1
High power factor converter (FR-HC), power
regeneration common converter (FR-CV)
<01800 or more>
Regeneration Unit
Brake unit (FR-BU2 )
*2
Power regeneration converter (MT-RC)
Brake unit (MT-BU5)
High power factor converter (MT-HC)
*1 Used in combination with GZG, GRZG, or FR-BR.
*2 Used in combination with MT-BR5
108
Initial Setting
Value Range
Regeneration unit
0
100
Inverter without regenerative
10 function, brake unit (FR-BU2
, FR-BU, BU type)
*1
20
120
1
0
101
Brake unit (FR-BU2
11 BU5), power regeneration
converter (MT-RC)
21
121
High power factor converter
(FR-HC, MT-HC), power
2
regeneration common
converter (FR-CV)
Set the %ED of the brake transistor operation when using a brake unit (MT-BU5).
0% 0 to 10%
(Setting is available only for the 01800 or more)
Power Supply to the
Inverter
R/L1, S/L2, T/L3
P/+, N/-
R/L1, S/L2, T/L3 - P/+, N/-
P/+, N/-
Power Supply to the
Inverter
R/L1, S/L2, T/L3
P/+, N/-
R/L1, S/L2, T/L3 - P/+, N/-
R/L1, S/L2, T/L3
R/L1, S/L2, T/L3
P/+, N/-
R/L1, S/L2, T/L3 - P/+, N/-
P/+, N/-
Description
Terminal for power
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 feeding mode 2)
R/L1, S/L2, T/L3
, MT-
*2
P/+, N/-
(DC feeding mode 1)
R/L1, S/L2, T/L3 - P/+, N/-
(DC feeding mode 2)
P/+, N/-
Pr. 30 Setting
0 (initial value), 100
10
20, 120
2
Pr. 30 Setting
0 (initial value), 100
10
20, 120
1, 101
1, 101
11
21, 121
2
Reset at main circuit
power supply ON
Reset
Not reset
-
Reset
Not reset
Reset
Not reset
-
Reset
Not reset
-
Pr. 70 Setting

0% (initial value)
10%
