Mitsubishi Electric FR-E720-600 Instruction Manual page 131

(3) With brake opening completion signal input (Pr.292 = "8")
When the start signal is input to the inverter, the inverter starts running. When the internal speed command reaches the
value set in Pr. 278 and the output current is not less than the value set in Pr. 279 , the inverter outputs the brake opening
request signal (BOF) after the time set in Pr. 280 has elapsed.
When the time set in Pr. 281 elapses after the BOF signal is output, the inverter increases the output frequency to the set
speed.
When the speed has decreased to the frequency set in Pr. 282 during deceleration, the brake opening request signal (BOF) is
turned off. When the time set in Pr. 283 has elapsed after the BOF signal is turned off, the inverter output is switched off.
frequency
Brake opening request
(BOF signal)
Electromagnetic brake operation
REMARKS
If brake sequence mode has been selected, inputting the jog signal (jog operation) or RT signal (second function selection)
during an inverter stop will make brake sequence mode invalid and give priority to jog operation or second function selection.
Note that JOG and RT signal input is invalid even if JOG signal and RT signal are input during operation in brake sequence
mode.
Target
Pr. 280
Pr. 282
Pr. 278
Pr. 13
STF
Pr. 279
Output I
Closed
Motor brake and stop operation
Pr. 281
ON
ON
Opened
Time
Pr. 283
Closed
129
4