Fuji Electric FRENIC MEGA G2 Series - Page 466

5.3 Description of Function Codes 5.3.8 J codes (Applied functions)
5-282
J18, J19
PID control (PID output limiter upper limit, PID output limiter lower limit)
The upper and lower limiters can be specified to the PID output, exclusively used for PID control. The settings are
ignored when PID cancel “Hz/PID” is enabled and the inverter is operated at the reference frequency previously
specified.
( Function codes E01 to E09 data = 20)
 PID Control (Upper limit of PID process output) (J18)
J18 specifies the upper limit of the PID processor output limiter in %. If the value of “999” is specified to J18, the
setting of the frequency limiter (Upper) (F15) will serve as the upper limit.
 PID Control (Lower limit of PID process output) (J19)
J19 specifies the lower limit of the PID processor output limiter in %. If the value of “999” is specified to J19, the
setting of the frequency limiter (Lower) (F16) will serve as the lower limit.
J21
Condensation prevention (Duty)
The motor temperature can be raised while the inverter is stopped to prevent condensation forming by supplying
DC current for a fixed period of time.
This function does not work when a synchronous motor is selected.
 Enable conditions
By turning on condensation prevention “DWP” while the inverter is stopped, the condensation prevention function
is started.
(Function codes E01 to E09, data = 39)
 Condensation prevention (Duty) (J21)
The current flowing to the motor is based on DC braking 1 (operation level) (F21), and duty control is performed
based on the condensation prevention duty (J21) ratio corresponding to DC braking 1 (time) (F22).
100×
T
(F22)(time)brake DC
(J21)duty prevention oncondensatiDew =
Fig. 5.3-33 Condensation prevention operation
J22
Switch to commercial power sequence (Refer to E01 to E09)
Refer to the function code E01 to E09 switch to commercial power built-in sequence “ISW50” and “ISW60” items
for a detailed explanation of the switch to commercial power sequence setting.
J23, J24
PID control (Low liquid level stop starting feedback deviation, Low liquid level stop
startup delay time)
Refer to the J08 item.