Fuji Electric FRENIC-AQUA series, User Manual

Page: 555 / 751

6-274
J461 Motor Increase/Decrease Switching Judgment Non-responsive Area Width
■ Motor increase/decrease switching judgment non-responsive area width (J461)
In the PID control, no motor increase/decrease judgment will be performed as long as the
deviation between the PID command value (SV value) and the PID feedback value is less
than the specified value.
- Data setting range: OFF, 0.1 to 50.0%
Data for J461 Description
0.1 to 50.0% Deviation between PID command value (SV value) and PID feedback value,
assuming 100% of PID feedback full scale.
OFF Disable (Always perform motor increase/decrease judgment)
J462 Failure Inverter Judgment Time
In the communications-linked inverter drive motor floating system (J401 = 52), if PID control
comes to be at the hold state in the inverter running under PID control due to the limiter (e.g.,
current limit), then it is judged whether to exclude the PID control inverter.
If any other ready-to-run inverter exists in the system and the failure inverter judgment time
(J462) has elapsed, the current PID control inverter will be switched to the other one.
This switching does not involve increase/decrease of inverters or regular switching even if
their conditions are met.
If J462 = OFF, no switching occurs. During auto search for idling motor speed, no PID
control inverter will be switched even if PID control comes to be at the hold state.
- Data setting range: OFF, 0.5 to 600.0 s