119
Motor brake and stop operation
4
⋅
Operation example 2 at power failure (when DC power is restored)
⋅
Operation example 3 at power failure (when continuous operation is performed)
(7) Power supply specification at DC feeding
(8) Regenerative brake duty alarm output and alarm signal (RBP signal) (FR-F720-03160 (FR-
F740-01800) or higher)
200V class
Rated input DC voltage
283VDC to 339VDC
Permissible fluctuation
240VDC to 373VDC
400V class
Rated input DC voltage
537VDC to 679VDC
Permissible fluctuation
457VDC to 740VDC
CAUTION
⋅
As voltage between P/+ and N/- becomes 415VDC (830VDC) or more temporarily at regeneration, make selection of DC power
supply carefully.
100%: regenerative overvoltage protection operation value
⋅
[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)
.
Time
ON
ON
Back up operation
Motor
coasting
Output
frequency
(Hz)
STF(STR)
DC
AC
AC
Control power
supply
ON
Power restoration
AC power supply
ON
Y85(MC)
ON
OFF
X70
X71
Turns OFF after
stop while running
Approx. 150ms
Time
ON
Back up operation
Output
frequency
(Hz)
STF(STR)
DC
AC
AC
Control power
supply
ON
Power restoration
AC power supply
ON
Y85(MC)
ON
OFF
X70
X71
Remains ON while running
Ratio of brake duty
to the Pr. 70 setting
Regenerative
brake prealarm
(RBP)
OFF
ON
100%
85%
Tim
ON
Summary of Contents for -NAFR-F720-00167-NA
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