Fuji Electric FRENIC-Ace series - Page 292

5.3 Description of Function Codes
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■ Lifetime alarm – “LIFE” (Function code data = 30)
This output signal comes ON when it is judged that the service life of any one of capacitors (DC link bus capacitors
or electrolytic capacitors on the printed circuit boards) or cooling fan has expired. This signal should be used as a
guide for replacement of the capacitors and cooling fan. If this signal comes ON, use the specified maintenance
procedure to check the service life of these parts and determine whether the parts should be replaced or not.
( Function code H42)
This signal comes ON also when the internal air circulation DC fan (FRN0203 E2-4 or above for 400 V class
series) is locked.
■ Reference loss detected – “REF OFF” (Function code data = 33)
This output signal comes ON when an analog input used as a frequency command source is in a reference loss
state (as specified by E65) due to a wire break or a weak connection. This signal goes OFF when the normal
operation under the analog input is resumed. ( Function code E65)
■ Overload prevention controlling – “OLP” (Function code data = 36)
This output signal comes ON when overload prevention control is activated.
(The minimum ON-duration is 100 ms.) ( Function code H70)
■ Current detected – “ID” (Function code data = 37), Current detected 2 – “ID2” (Function code data =
38), Current detected 3 – “ID3” (Function code data = 39)
When the inverter output current exceeds the level specified by E34, E37 or E55 for the period specified by E35,
E38 or E56, the ID, ID2 or ID3 signal turns ON, respectively. (The minimum ON-duration is 100 ms.)
( Function code E34)
■ Low current detected – “IDL” (Function code data = 41)
When the inverter output current falls to or below the level specified by E34, E37 or E55 for the period specified by
E35, E38 or E56, the ID, ID2 or ID3 signal turns ON, respectively. (The minimum ON-duration is 100 ms.)
( Function code E34)
■ PID alarm – “PID-ALM” (Function code data = 42)
Assigning this output signal enables PID control to output absolute-value alarm or deviation alarm.
( Function codes J11 to J13)
■ Under PID control – “PID-CTL” (Function code data = 43)
This output signal comes ON when PID control is enabled (“Cancel PID control” (Hz/PID) = OFF) and a run
command is ON. ( Function code J01)
When PID control is enabled, the inverter may stop due to the slow flowrate stopping function or other
reasons. If that happens, the
“PID-CTL” signal remains ON. As long as the “PID-CTL” signal is ON, PID
control is effective, so the inverter may abruptly resume its operation, depending on the feedba
ck value
in PID control.
When PID control is enabled, even if the inverter stops its output during operation because of sensor signals or
other reasons, operation will resume automatically. Design your machinery so that safety is ensured even in
such cases.
Otherwise an accident could occur.
■ Under sleep mode of PID control – “PID-STP” (Function code data = 44)
This output signal is ON when the inverter is in a stopped state due to the slow flowrate stopping function under
PID control.) ( Function codes J15 to J17, J23 J24)
■ Low torque detected – “U-TL” (Function code data = 45)
This output signal comes ON when the torque value calculated by the inverter or torque command drops below the
level specified by E80 (Low torque detection (Level)) for the period specified by E81 (Low torque detection (Timer)).
(minimum width of the output signal: 100 ms) ( Function codes E78 to E81)