MITSUBISHI ELECTRIC FR-S520E - Manual (Page 140)

130
Brake parameters (FR-S520E-0.4K to 3.7K only)
2.13 Brake parameters (FR-S520E-0.4K to 3.7K only)
2.13.1 Regenerative braking operation (b1 , b2 )
· The parameter numbers in parentheses are those for use with the parameter unit
(FR-PU04).
· Setting is enabled when Pr. 30="1".
<Setting>
(1) When using the brake resistor (MRS/MYS type), brake unit (BU type), high power
factor converter (FR-HC), power regenerative common converter (FR-CV)
Set the brake parameter b1 to "0". In this case, the brake parameter b2 is
disabled.
The regenerative braking duty when using the brake resistor is 3%.
(2) When using the high-duty brake resistor (FR-ABR)
Set the brake parameter b1 to "1".
Set the brake parameter b2 to "10%".
When making frequent starts/stops in the FR-S520E-0.4K to 3.7K inverter, use
the optional brake resistor to increase the regenerative brake duty.
Para
meter
Name
Factory
Setting
Setting
Range
Remarks
b1
(560)
Regenerative
function selection
0
0
When using the brake resistor (MRS/MYS type),
brake unit (BU type),
high power factor converter (FR-HC),
power regenerative common converter (FR-CV)
1
When using the high-duty brake resistor
(FR-ABR)
b2
(561)
Special regenerative
brake duty
0% 0 to 30% %ED of the built-in brake transistor operation
REMARKS
•Can be connected to the FR-S520E-0.4K to 3.7K only.
•The brake unit (BU type), high power factor converter (FR-HC), power regenerative common
converter (FR-CV) can not be connected to the FR-S520E-0.1K to 0.75K.
WARNING
The brake parameter b2 value must not exceed the setting of the brake
resistor used.
Otherwise, the resistor can overheat.