Fuji Electric FRENIC-AQUA series, User Manual

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6.3 Details of Function Codes
6-273
Chap. 6
FUNCTION C
ODES
J458
J459
J460
Motor Decrease Switching Time (Acceleration time)
Motor Decrease Switching Level
Motor Decrease PID Control Start Frequency
■ Motor decrease switching time (Acceleration time) (J458)
During motor decrease during cascade operation, the inverter-driven motor is accelerated at
motor deceleration switching time (acceleration time) (J458). After the commercial driven
motor is interrupted, acceleration stops when output frequency reaches the motor decrease
PID start frequency (J460). At this point, PID control recommences, and the inverter-driven
motor operates with the PID control MV frequency.
- Data setting range: Inherit, 0.01 to 3600.00 s
Data for J458 Description
0.01 to
3600.00 s
The acceleration time of inverter-driven motor before stopping the
commercial power-driven motor with motor decrease judgment.
Inherit
F07: Depends on acceleration time 1 (When RT1 is turned ON, E10:
acceleration time 2)
■ Motor decrease switching level (J459)
When motors are decreased ruing cascade operation, if the output frequency of the
inverter-driven motor is above that of the motor decrease switching level (J459), the contacts
for the decreased units are turned OFF.
- Data setting range: 0 to 100%, Inherit
Data for J459 Description
0 to 100%
The inverter-driven motor frequency level when the commercial power-driven
motor is stopped with motor decrease judgment.
Inherit
The motor increase switching level (J456) depends on the motor decrease
switching level (J459).
Switching frequency [Hz] = (J459/100%) × ((J119/219) - (J118/219)) + J19
■ Motor decrease PID control start frequency (J460)
When motors are decreased ruing cascade operation, the PID control start frequency is
specified.
- Data setting range: 0 to 120 Hz, Inherit
Data for J460 Description
0 to 120 Hz
The PID control start frequency after the commercial power-driven motor is
stopped with motor decrease judgment.
Inherit Depends on the motor increase judgment (judgment frequency) (J450)