Fuji Electric FRENIC-AQUA series, User Manual

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6-252
Function code Name Data Description
J452 Motor decrease
judgment
(Judgment
frequency)
0 to 120 Hz, Inherit
J453 Motor decrease
judgment
(Duration time)
0.00 to 3600 s
This function code adjusts the motor
subtracting conditions.
If the frequency of the inverter-driven pump
drops below the setting of J452 and keeps it for
the setting of J453, commercial power-driven
motor subtracting conditions are met.
The default is that if the frequency reaches the
setting of J119 (PID lower limiter), the
subtracting conditions are immediately met.
J461 Motor increase/
decrease
switching
judgment
non-responsive
area width
OFF, 0.1 to 50.0% If the deviation between SV and PV values is
less than the setting of J461, no increase/
decrease judgment is made.
J454 Contact restart
time when
switching the
motor
0.01 to 2.00 s Taking into account the contactor delay at the
time of adding motors, the start of an inverter
output can be delayed. Adjust this value when
the inverter trips due to a contactor delay.
J455 Motor increase
switching time
(Deceleration
time)
0.00 to 3600 s, Inherit
J456 Motor increase
switching level
0 to 100%
J457 Motor increase
PID control
start frequency
0 to 120 Hz, Inherit
This function code adjusts the sequence to
apply at the time of adding motors. If the
adding conditions of commercial power-driven
pumps are met, the inverter decelerates
according to the setting of J455. If the inverter
decelerates to the setting of J456, it turns the
commercial power-driven pump start signal
ON. After that, the inverter continues to
decelerate. When it reaches the setting of J457,
it restarts PID control.
J456 is a percentage within the PID control
range (lower to upper limits).
The initial speed decelerates according to the
deceleration time selected. When it drops to
the PID lower limit frequency, the start signal
comes ON.
J458 Motor decrease
switching time
(Acceleration
time)
0.00 to 3600 s, Inherit
J459 Motor decrease
switching level
0 to 100%
J460 Motor decrease
PID control
start frequency
0 to 120 Hz, Inherit
This function code adjusts the sequence to
apply at the time of motor decrease. If the
subtracting conditions of commercial
power-driven pumps are met, the inverter
accelerates according to the setting of J458. If
the inverter accelerates to the setting of J459, it
turns the commercial power-driven pump start
signal ON. After that, the inverter continues to
accelerate. When it reaches the setting of J460,
it restarts PID control.
J459 is a percentage within the PID control
range (lower to upper limits).
The initial speed accelerates according to the
acceleration time selected. When it rises to the
PID upper limit frequency, the start signal
comes ON.