Mitsubishi Electric FR-A800, Instruction Manual

Page: 857 / 1042

Parameters (G) Control parameters
FR-A800 5 - 677
When using built-in brake resistor, brake unit (FR-BU2, BU, FR-BU)
(FR-A820-03160(55K) or lower, FR-A840-01800(55K) or lower)
When using the built-in brake, using FR-BU2 in combination with GZG/GRZG/FR-BR, or using BU or
FR-BU, set Pr. 30 = "0 (initial value), 10, 20, 100, 110, 120". Setting of Pr. 70 will become disabled.
At this time, the regenerative brake duty is as follows. (The built-in brake resistor is equipped for the
7.5K or lower.)
– FR-A820-00250(3.7K) or lower . . . . . . . . . . . . . . . . . . 3%
– FR-A820-00340(5.5K), FR-A820-00490(7.5K) . . . . . 2%
– FR-A840-00250(7.5K) or lower . . . . . . . . . . . . . . . . . . 2%
– Other than above . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0% (without built-in brake resistor)
When using high-duty brake resistor (FR-ABR)
(FR-A820-01250(22K) or lower, FR-A840-00620(22K) or lower)
●
Set Pr. 30 = "1, 11, 21".
●
Set Pr. 70 as follows.
– FR-A820-00490(7.5K) or lower, FR-A840-00250(7.5K) or lower . . . . . . . . . . 10%
– FR-A820-00630(11K) or higher, FR-A840-00310(11K) or higher. . . . . . . . . . 6%
When using brake unit (FR-BU2)
(FR-A820-03800(75K) or higher, FR-A840-02160(75K) or higher)
To use FR-BU2 in combination with MT-BR5, set as follows.
●
Set Pr. 30 = "1, 11, 21".
●
Set Pr. 70 = "0% (initial value)".
●
Set the brake unit FR-BU2, Pr. 0 "Brake mode selection" = "2".
When using power regeneration converter (MT-RC)
●
Set Pr. 30 = "1, 11, 21".
●
Set Pr. 70 = "0% (initial value)".
NOTE The built-in brake resistor is equipped for the FR-A820-00490(7.5K) or lower, and the FR-A840-
00250(7.5K) or lower.
NOTE When Pr. 30 = "1, 11, 21", oL (stall prevention (overvoltage)) does not operate.