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PARAMETERS
75
"
Regenerative brake duty (Pr. 30, Pr. 70)
4.2.12 Regenerative brake duty (Pr. 30, Pr. 70)
Pr. 30 "regenerative function selection"
Pr. 70 "special regenerative brake duty"
!
When making frequent starts/stops, use the optional "brake resistor" to increase the
regenerative brake duty. (0.4K or more)
Parameter
Number
Factory
Setting
Setting
Range
30 0 0,1
70 0% 0 to 30%
<Setting>
(1) When using the brake resistor (MRS), brake unit, high power factor
converter
!
Set "0" in Pr. 30.
!
The Pr. 70 setting is made invalid.
(2) When using the brake resistors (2 MYSs in parallel) (3.7K is only
allowed)
!
Set "1" in Pr. 30.
!
Set "6%" in Pr. 70.
(3) When using the high-duty brake resistor (FR-ABR)
!
Set "1" in Pr. 30.
!
Set "10%" in Pr. 70.
Note:1. Pr. 70 "regenerative brake duty" indicates the %ED of the built-in brake
transistor operation. The setting should not be higher than the permissible
value of the brake resistor used. Otherwise, the resistor can overheat.
2. When Pr. 30 = "0", Pr. 70 is not displayed but the brake duty is fixed at 3%.
(Fixed at 2% for 5.5K, 7.5K)
3. The brake resistor cannot be connected to 0.1K and 0.2K inverters.
WARNING
The value set in Pr. 70 should not exceed the value set to the brake
resistor used.
Otherwise, the resistor can overheat.