Mitsubishi Electric FR-A700 Series, Technical Manual

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334
PARAMETER
(12) Power supply specification at DC feeding
As voltage between P and N becomes 415VDC
(830VDC) or more temporarily at regeneration, select
DC power supply carefully.
Signal Name Description Parameter Setting
Input
X70
DC feeding operation
permission signal
When performing operation with DC feeding, turn ON the X70 signal.
When the inverter output is shut off because of power failure, the
inverter starts about 150ms after switching ON X70 signal. (When
automatic restart operation is valid, the inverter starts after additional
[
Pr. 57 ] set time has elapsed.)
When the X70 signal turns OFF during inverter operation, output is
shutoff ([
Pr. 261 = 0]) or the inverter is decelerated to a stop ([ Pr. 261
≠
0]).
Set 70 in any of [ Pr.
178 to 189 ].
X71
DC feeding cancel
signal
Turn this signal ON to stop DC feeding.
When the X71 signal is turned ON during inverter operation with
turning ON the X70 signal, output is shutoff ([
Pr. 261 = 0]) or the
inverter is decelerated to a stop ([ Pr. 261
≠
0]), then the X85 signal
turns OFF after the inverter stop.
After turning ON of the X71 signal, operation can not be performed
even if the X70 signal is turned ON.
Set 71 in any of [ Pr.
178 to 189 ].
Output Y85
DC feeding signal
This signal turns ON during power failure or under voltage of AC
power. The signal turns OFF when the X71 signal turns ON or power
is restored.
The Y85 signal does not turn OFF during inverter operation even if the
power is restored and turns OFF after an inverter stop.
When the Y85 signal turns ON because of undervoltage, the Y85
signal does not turn OFF even if undervoltage is eliminated.
ON/OFF status is retained at an inverter reset.
Set 85 (positive logic)
or 185 (negative logic)
in any of [
Pr. 190 to
196 ] .
ON
ON
STF (STR)
ON
ON
Y85(MC)
ON
X70
ON
X71
Time
Back up operation
Motor
coasting
Output
frequency
(Hz)
AC power supply
DC power supply
About 150ms
Operation example 1 at power failure
ON
ON
ON
ON
ON
OFF
STF (STR)
Y85(MC)
X70
X71
Time
Back up operation
Output
frequency
(Hz)
AC power supply
DC power supply
Power restoration
Turns OFF after stop
while running
Motor
coasting
About 150ms
Operation example 2 at power failure (when AC
power is restored)
200V
class
Rated input DC voltage 283 VDC to 339 VDC
Permissible fluctuation
240VDC to 373VDC
400V
class
Rated input DC voltage 537VDC to 679 VDC
Permissible fluctuation
457VDC to 740VDC
ON
ON
ON
ON
OFF
STF (STR)
Y85(MC)
X70
X71
Output
frequency
(Hz)
AC power supply
DC power supply
Time
Back up operation
Power restoration
Remains ON while running
Operation example 3 at power failure (when
continuous operation is performed)
A700