Power-Failure Deceleration Stop Function (Pr. 261) <V/F><Gp Mfvc - Mitsubishi Electric FR-F700PJ Instruction Manual

Air-conditioning inverter
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Operation selection at power failure and instantaneous power failure
4.13.3 Power-failure deceleration stop function (Pr. 261)
When a power failure or undervoltage occurs, the inverter can be decelerated to a stop or can be decelerated and re-
accelerated to the set frequency.
Parameter
Number
Power failure stop
261
selection
The above parameter can be set when Pr. 160 Extended function display selection = "0". (Refer to page 197)
Power
ON
Pr. 261 = 1
Power
During deceleration
at occurrence of power failure
During stop
at occurrence
of power failure
STF
Y46
Turn OFF STF once to make acceleration again
REMARKS
 When automatic restart after instantaneous power failure is selected (Pr. 57
invalid and automatic restart operation after instantaneous power failure is valid.
 When the power failure deceleration stop function is active (Pr. 261
ON with the start signal (STF/STR) ON. After switching ON the power, turn OFF the start signal once and then ON again to
make a start.
168
Initial
Name
Value
0
OFF
Pr. 261 = 0
Pr. 261 = 1, 2
Time
Time
Power
STF
Y46
Setting
Range
Coasts to stop.
0
When undervoltage or power failure occurs, the inverter output
is shut off.
When undervoltage or a power failure occurs, the inverter can
1
be decelerated to a stop.
When undervoltage or a power failure occurs, the inverter can
be decelerated to a stop.
2
If power is restored during a power failure, the inverter
accelerates again.
(1) Parameter setting
When Pr. 261 is set to "1 or 2", the inverter decelerates to a stop
if an undervoltage or power failure occurs.
(2) Operation outline of deceleration to stop at power
failure
When undervoltage or power failure occurs, the output
frequency is decreased and controlled so that the converter
circuit (DC bus) voltage is constant and decreased to 0Hz to
stop.
(3) Power failure stop function (Pr. 261 = "1")
If power is restored during power failure deceleration,
deceleration to a stop is continued and the motor remains
stopped. To restart, turn OFF the start signal once, then turn it
ON again.
 "1"), the inverter will not start even if the power is turned
ON
Not started as inverter
Output frequency
is stopped due to
power failure
OFF
ON
ON
GP
GP
GP
V/F
V/F
V/F
MFVC
MFVC
MFVC
<V/F><GP MFVC>
Description
 "9999"), power failure stop function is made
Time

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