Mitsubishi Electronics FR-A500 ユーザーズマニュアル
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4.2.63 Brake sequence function (Pr. 278 to Pr. 285)
Pr. 278 "brake opening frequency"
Pr. 279 "brake opening current"
Pr. 280 "brake opening current detection time"
Pr. 281 "brake operation time at start"
Pr. 282 "brake operation frequency"
Pr. 283 "brake operation time at stop"
Pr. 284 "deceleration detection function selection"
Pr. 285 "overspeed detection frequency"
This function is used to output from the inverter the mechanical brake opening completion signal timing
signal in vertical lift and other applications.
This function prevents the load from dropping with gravity at starting due to the operation timing fault of the
mechanical brake or an overcurrent alarm at a stop, ensuring secure operation.
signal in vertical lift and other applications.
This function prevents the load from dropping with gravity at starting due to the operation timing fault of the
mechanical brake or an overcurrent alarm at a stop, ensuring secure operation.
z
The mechanical brake opening completion signal may either be entered or not entered into the inverter.
z
This function is only valid when "7" or "8" is set in Pr. 60 to select advanced magnetic flux vector control in
the external operation mode. (With the exception of Pr. 285)
(Note) When the brake sequence function is selected, automatic restart after instantaneous power failure
function is invalid.
<Wiring example>
• Sink logic
• Pr. 184 = 15
• Pr. 190 = 20
• Pr. 184 = 15
• Pr. 190 = 20
Parameter
Number
Factory
Setting
Setting Range
278
3Hz
0 to 30Hz
279
130%
0 to 200%
280
0.3 s
0 to 2 s
281
0.3 s
0 to 5 s
282
6Hz
0 to 30Hz
283
0.3 s
0 to 5 s
284
0
0, 1
285
9999
0 to 30Hz, 9999
Note: 1. The input signal terminal used depends on the Pr. 180 to Pr. 186 settings.
2. The output signal terminal used depends on the Pr. 190 to Pr. 195 settings.
R elated param eters
Pr. 60 "intelligent mode selection"
Pr. 80 "motor capacity"
Pr. 81 "number of motor poles"
Pr. 180 to Pr. 186
(input terminal function selection)
Pr. 190 to Pr. 195
(output terminal function selection)
Pr. 80 "motor capacity"
Pr. 81 "number of motor poles"
Pr. 180 to Pr. 186
(input terminal function selection)
Pr. 190 to Pr. 195
(output terminal function selection)
Brake opening request signal (BOF signal)
*Note the permissible current of the
inverter's internal transistor.
(24VDC 0.1A)
*Note the permissible current of the
inverter's internal transistor.
(24VDC 0.1A)
U
V
W
MC
STF
RH
SD
SE
MC
MC
24VDC
NFB
Start signal
Multi-speed signal
Brake opening completion signal
(Note 2) RUN
AU (Note 1)
Mechanical
brake
Motor
(BRI signal)
Power supply
*
R
S
T