Mitsubishi Electric FR-A800, Instruction Manual

Page: 846 / 1042

(G) Control parameters Parameters
5 - 666
Setting of operation voltage (torque) (Pr. 12)
●
Pr. 12 "DC injection brake operation voltage" will set the percent against the power supply voltage.
(Not used at the time of zero speed control or servo lock)
●
DC injection brake will not operate with setting of Pr. 12 = "0%". (The motor will coast to stop.)
NOTES When the initial value is set in Pr. 12, the setting corresponding to the motor is set according to
the Pr. 71 "Applied motor" setting. (Refer to page 5-438.)
However, when an energy saving motor (SF-HR or SF-HRCA) is used, change the Pr. 12 setting as
shown below.
Even if the setting value of Pr. 12 is made larger, braking torque will be limited so the output cur-
rent will be within the rated current of the inverter.
Inverter Pr. 12 setting
FR-A820-00250(3.7K) or lower
FR-A840-00126(3.7K) or lower
4%
FR-A820-00340(5.5K), FR-A820-00490(7.5K)
FR-A840-00170(5.5K), FR-A840-00250(7.5K)
3%
FR-A820-00630(11K) to FR-A820-01250(22K), FR-A820-01870(37K) or higher
FR-A840-00310(11K) to FR-A840-00620(22K), FR-A840-00930(37K) or higher
2%
FR-A820-01540(30K)
FR-A840-00770(30K)
1.5%