Mitsubishi FR-F720-00046-NA Instruction Manual page 129

⋅ Operation example 2 at power failure (when DC power is restored)
Control power
AC power supply
⋅ Operation example 3 at power failure (when continuous operation is performed)
Control power
AC power supply
(7) Power supply specification at DC feeding
Rated input DC voltage
200V class
Permissible fluctuation
Rated input DC voltage
400V class
Permissible fluctuation
CAUTION
⋅ As voltage between P/+ and N/- becomes 415VDC (830VDC) or more temporarily at regeneration, make selection of DC power
supply carefully.
(8) Regenerative brake duty alarm output and alarm signal (RBP signal) (FR-F720-03160 (FR-
F740-01800) or higher)
100%: regenerative overvoltage protection operation value
Ratio of brake duty
to the Pr. 70 setting
Regenerative
brake prealarm
(RBP)
OFF
AC
supply
ON
Y85(MC)
X70
OFF
X71
ON
STF(STR)
Output
frequency
(Hz)
AC
supply
ON
Y85(MC)
ON
X70
OFF
X71
ON
STF(STR)
Output
frequency
(Hz)
100%
85%
ON
ON
Tim
Motor brake and stop operation
DC AC
Power restoration
Turns OFF after
stop while running
ON
ON
ON
Motor
coasting
Time
Approx. 150ms
Back up operation
DC
AC
Power restoration
ON Remains ON while running
Time
Back up operation
283VDC to 339VDC
240VDC to 373VDC
537VDC to 679VDC
457VDC to 740VDC
⋅ [RB] appears on the operation panel and an alarm signal (RBP) is
output when 85% of the regenerative brake duty set in Pr. 70 is
reached. If the regenerative brake duty reaches 100% of the Pr.
70 setting, a regenerative overvoltage (E.OV1 to E.OV3) occurs.
⋅ The inverter does not shut off the output when the alarm signal is
output.
⋅ For the terminal used for the RBP signal output, assign the
function by setting "7" (positive logic) or "107" (negative logic) in
any of Pr. 190 to Pr. 196 (output terminal function selection).
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