Mitsubishi Electric FR-A820-00046 Instruction Manual page 110

Connection of stand-alone option units
When using a brake resistor (excluding FR-ABR)
A brake resistor can be applied to FR-A820-01250(22K) or lower and FR-A840-01800(55K) or lower.
Use a brake resistor that has resistance and power consumption values higher than the following. Al-
so, the brake resistor must have a sufficient capacity to consume the regenerative power.
Inverter
resistance [Ω]
FR-A820-00046(0.4K)
FR-A820-00077(0.75K)
FR-A820-00105(1.5K)
FR-A820-00167(2.2K)
FR-A820-00250(3.7K)
FR-A820-00340(5.5K)
FR-A820-00490(7.5K)
FR-A820-00630(11K)
FR-A820-00770(15K)
FR-A820-00930(18.5K)
FR-A820-01250(22K)
Tab. 2-45: Minimum specifications of the brake resistor
Set parameters as below.
● Pr. 30 "Regenerative function selection" = 1
● Set Pr. 70 "Special regenerative brake duty" according to the amount and frequency of the
regenerative driving, and make sure that the resistor can consume the regenerative power
properly.
(Refer to page 5-675.)
2 - 80
Minimum Power
consumption [kW]
100 1.44
80 1.81
50 2.89
33 4.38
30 4.81
18 8.02
18 8.02
12 12.0
8.5 17.0
6.5 22.2
6.5 22.2
Minimum
Inverter
resistance [Ω]
FR-A840-00023(0.4K)
FR-A840-00038(0.75K)
FR-A840-00052(1.5K)
FR-A840-00083(2.2K)
FR-A840-00126(3.7K)
FR-A840-00170(5.5K)
FR-A840-00250(7.5K)
FR-A840-00310(11K)
FR-A840-00380(15K)
FR-A840-00470(18.5K)
FR-A840-00620(22K)
FR-A840-00770(30K)
FR-A840-00930(37K)
FR-A840-01160(45K)
FR-A840-01800(55K)
Installation and wiring
Power
consumption [kW]
371 1.66
236 2.61
190 3.24
130 4.74
83 7.42
66 9.34
45 13.7
34 18.1
34 18.1
21 29.3
21 29.3
13.5 45.6
13.5 45.6
13.5 45.6
13.5 45.6