Mitsubishi Electric FR-E710W-0.1K, Инструкция по эксплуатации

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138
Motor brake and stop operation
(4) Protective functions
If any of the following occurs during the brake sequence operation, the inverter results in a fault, trips, and turns OFF the
brake opening request signal (BOF).
Fault Display Description
E.MB4
Although more than 2s have elapsed after the start command (forward or reverse rotation) is input, the brake opening
request signal (BOF) does not turn ON.
E.MB5
Although more than 2s have elapsed after the brake opening request signal (BOF) turned on, the brake opening
completion signal (BRI) does not turn ON.
E.MB6
Although the inverter had turned ON the brake opening request signal (BOF), the brake opening completion signal (BRI)
turned OFF midway.
E.MB7
Although more than 2s have elapsed after the brake opening request signal (BOF) turned OFF at a stop, the brake
opening completion signal (BRI) does not turn OFF.
NOTE
During deceleration, inverter output is shut OFF when the frequency reaches
Pr.13 Starting frequency
or 0.5Hz,
whichever is lower. For
Pr.278 Brake opening frequency
, set
Pr.13
or a frequency equal to or higher than 0.5Hz.
Setting
Pr. 278 Brake opening frequency
too high activates stall prevention operation and may cause E.MB4.
If the sum of the time between
Pr. 13 Starting frequency
and
Pr. 278 Brake opening frequency
+
Pr. 280 Brake opening current
detection time
is more than 2s, E.MB4 occurs.
Parameters referred to
Pr. 80 Motor capacity, Pr. 81 Number of motor poles Refer to page 84
Pr. 180 to Pr. 184 (input terminal function selection) Refer to page 139
Pr. 190 to Pr. 192 (output terminal function selection) Refer to page 145
Pr. 800 Control method selection Refer to page 84
ON
Time
Output
frequency
(Hz)
Less than 2s
Output frequency (Hz)
Pr. 278
Pr. 13
Brake opening request
(BOF signal)
Pr. 280