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Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual Page 178

Transistorized inverter, high function & low acoustic noise.
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<Operation example>
At start: When the start signal is input to the inverter, the inverter starts running. When the output frequency
z
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
z
(BOF) is switched off. When the time set in Pr. 283 elapses after the brake operation confirmation
signal (BRI) was activated, the inverter output is switched off.
* 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)
Pr.13
Output frequency
Output current
Brake opening request
(BOF signal)
Brake opening completion
(BRI signal)
Electromagnetic brake operation
2) Pr. 60 = "8" (mechanical brake opening completion signal not input)
Pr.13
Output frequency
Output current
Brake opening request
(BOF signal)
Electromagnetic brake operation
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Target
frequency
Pr.278
Pr.280
Pr.283
ON
STF
Pr.279
ON
ON
Closed
Opened
Target
frequency
Pr.278
Pr.280
Pr.281
ON
Pr.279
STF
ON
Closed
Opened
165
PARAMETERS
Pr.282
Pr.278
Pr.283
Closed
Time
Pr.282
Pr.278
Pr.283
Closed
Time

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