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(3) Without brake opening completion signal input (Pr.292 = "8 or 18")
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 inverter decelerates to the frequency set in Pr.282 during deceleration, the inverter turns OFF the BOF
signal and decelerates further to the frequency set in Pr.278. After the turn OFF of BOF signal, the inverter holds
the frequency set in Pr.278 for the time set in Pr.283. And after the time set in Pr.283 passes, the inverter
decelerates again. The inverter finally stops when its frequency reaches to Pr.13 Starting frequency setting or 0.5Hz,
whichever is lower.
(4) Relation between Pr.292 Automatic acceleration/deceleration and the RT, X9, or JOG signal
The table below shows when the function of each input signal becomes available depending on the Pr.292 setting.
The table below shows the relation between each input signal and the operating status depending on the Pr.292
setting.
Pr.292 setting RT signal / X9 signal JOG signal
0 Depending on the Pr.155 setting Always available
3, 5 to 8, 11 Only during an inverter stop Only during an inverter stop
17, 18 Depending on the Pr.155 setting Only during an inverter stop
Pr.292 setting Input signal status
Operating status (Automatic acceleration/deceleration / Normal operation)
During an inverter stop During inverter operation
0
Normal operation Normal operation
3, 5 to 8, 11
JOG signal
OFF
Automatic acceleration/deceleration
(JOG invalid)
Maintains the operating status before
switching of the signal
ON Normal operation (JOG valid)
RT/X9 signal
OFF
Automatic acceleration/deceleration (RT/
X9 invalid)
Maintains the operating status before
switching of the signal
ON Normal operation (RT/X9 valid)
17, 18
JOG signal
OFF
Automatic acceleration/deceleration
(JOG invalid)
Maintains the operating status before
switching of the signal
ON Normal operation (JOG valid)
RT/X9 signal
OFF
Automatic acceleration/deceleration (RT/
X9 invalid)
Automatic acceleration/deceleration (RT/
X9 invalid)
ON
Automatic acceleration/deceleration (RT/
X9 valid)
Automatic acceleration/deceleration (RT/
X9 valid)
Pr.281
Pr.280
ON
ON
Pr.283
Pr.279
Time
Closed
Opened
Closed
STF
Pr.278
Pr.282
Target frequency
(Hz)
Pr.13
Output frequency
Output current
Brake opening request
(BOF signal)
Pr.13 setting or 0.5Hz,
whichever is lower
Electromagnetic brake
operation
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