Mitsubishi Electric FR-A500 Instruction Manual page 187

<Operation example>
At start: When the start signal is input to the inverter, the inverter starts running. When the output
frequency 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 brake opening completion signal (BRI) was
activated, the inverter increases the output frequency to the set speed.
At stop: When the speed has decreased to the frequency set in Pr. 282, the brake opening request
signal (BOF) is switched off. When the time set in Pr. 283 elapses after the brake operation
confirmation signal (BRI) was activated, the motor decelerates to a stop.
*If Pr. 60 = "8" (mechanical brake opening completion signal not input), this time is the time after
the brake opening request signal is output.
1) Pr. 60 = "7" (brake opening completion signal input)
Brake opening request
Brake opening completion
Electromagnetic brake operation
2) Pr. 60 = "8" (mechanical brake opening completion signal not input)
Brake opening request
Electromagnetic brake operation
Pr.278 Pr.280
Pr.13
Output frequency
STF
Output current
(BOF signal)
(BRI signal)
Closed
Pr.278 Pr.280
Pr.13
Output frequency
STF
Output current
(BOF signal)
Closed
Target
frequency
Pr.282
Pr.281
ON
Pr.279
ON
ON
Opened
Target
frequency
Pr.282
Pr.281
ON
Pr.279
ON
Opened
178
PARAMETERS
Pr.278
Pr.283
Closed
Time
Pr.278
Pr.283
Closed
Time