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15. (A) Application Parameters
15.1 Brake sequence function
• Set "15" in any parameter from
Pr.178 to Pr.189 (Input terminal function selection)
, and assign the Brake opening
completion (BRI) signal to the input terminal.
• Set "20" (positive logic) or "120" (negative logic) in any parameter from
Pr.190 to Pr.196 (Output terminal function
selection)
, and assign the brake opening request signal (BOF) to the output terminal.
• Use
Pr.639 Brake opening current selection
to select whether the output current or the motor torque is used as a
reference for the brake opening operation.
• Under Real sensorless vector control or Vector control, use
Pr.640 Brake operation frequency selection
to select
whether the frequency command or the actual motor speed (estimated value) is used as a reference for brake closing
operation. If the brake operation timing is different from the motor speed because of the load, set
Pr.640
= "1 (brake
operation with the actual motor speed (estimated value))".
• Under Advanced magnetic flux vector control or encoder feedback control, the frequency command is used as a reference
for brake operation regardless of the
Pr.640
setting.
NOTE
• Under torque control, the brake sequence function is disabled.
Operation with brake opening completion signal input (Pr.292 = "7")
• When the start signal is input to the inverter, the inverter starts running, and when the output frequency reaches the
frequency set in
Pr.278 Brake opening frequency
and the output current or the motor torque is equal to or greater than
the
Pr.279 Brake opening current
setting, the brake opening request signal (BOF) is output after the time set in
Pr.280
Brake opening current detection time
. The Brake opening completion (BRI) signal is input, and the output frequency is
increased to the set speed after the set time in
Pr.281 Brake operation time at start
.
• When the inverter decelerates to the frequency set in
Pr.282 Brake operation frequency
during deceleration, the inverter
turns OFF the brake opening request signal (BOF) and decelerates further to the frequency set in
Pr.278
. After
electromagnetic brake operation completes and the inverter recognizes the turn OFF of the BRI signal, the inverter holds
the frequency set in
Pr.278
for the time set in
Pr.283 Brake operation time at stop
. And after the time set in
Pr.283
passes, the inverter decelerates again. The inverter outputs is shut off when the frequency reaches
Pr.13 Starting
frequency
setting or 0.5 Hz, whichever is lower.
Operation without Brake opening completion (Pr.292 = "8") signal input
• When the start signal is input to the inverter, the inverter starts running, and when the output frequency reaches the
frequency set in
Pr.278 Brake opening frequency
and the output current or the motor torque is equal to or greater than
the
Pr.279 Brake opening current
setting, the brake opening request signal (BOF) is output after the time set in
Pr.280
Brake opening current detection time
.
After the BOF signal is output, the output frequency is increased to the set speed after the set time in
Pr.281 Brake
operation time at start
.
STF
ON
Output current or motor torque
(select by
Pr.639
)
Brake opening request
(BOF signal)
ON
Electromagnetic brake
operation
Opened
Closed
Closed
Time
Brake opening completion
(BRI signal)
ON
Pr.278
Pr.282
Target frequency
Pr.13
Pr.280
Pr.281
Output frequency(Hz)
Pr.283
Pr.279
Pr.13
setting
or 0.5Hz,
whichever is lower
Summary of Contents for FR-E800
Page 17: ...16 1 Introduction 1 3 Related manuals MEMO ...
Page 51: ...50 2 Basic Operation 2 8 I O terminal function assignment MEMO ...
Page 89: ...88 3 Parameters 3 4 Parameter list by function group number MEMO ...
Page 135: ...134 5 Speed Control 5 9 Troubleshooting in the speed control MEMO ...
Page 153: ...152 6 Torque Control 6 7 Troubleshooting in torque control MEMO ...
Page 195: ...194 8 E Environment Setting Parameters 8 18 Current average value monitor signal MEMO ...
Page 237: ...236 10 D Operation Command and Frequency Command 10 6 Operation by multi speed setting MEMO ...
Page 339: ...338 13 T Multi Function Input Terminal Parameters 13 9 Start signal operation selection MEMO ...
Page 455: ...454 16 G Control Parameters 16 13 Speed smoothing control MEMO ...