Fuji Electric FRENIC-AQUA series, User Manual

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DC fan lock detection (Bit 5) (for IP00-rated inverters of 110 kW or above, IP21-rated ones
of 45 kW or above, and IP55-rated ones of 11 kW or above)
The inverter contains an internal air circulation DC fan. When the inverter detects that the DC
fan is locked by a failure or other cause, you can select either continuing the inverter
operation or having the inverter enter into the alarm state.
Entering alarm state: The inverter issues the alarm OH1 and allows the motor to coast to a
stop.
Continuing operation: The inverter does not enter the alarm state and continues to run the
motor.
Note that, however, the inverter turns ON the
OH and LIFE signals on the transistor output
terminals whenever the DC fan lock is detected regardless of your selection.
If the ON/OFF control of the cooling fan is enabled (H06 = 1), the cooling fan may
stop depending on the operating condition of the inverter. In this case, the DC fan
lock detection feature is considered normal (e.g., the cooling fan is normally
stopped by the stop fan command.) so that the inverter may turn OFF the LIFE or
OH signal output, or enable to cancel the alarm OH1, even if the internal air
circulation DC fan is locked due to a failure etc. (When you start the inverter in this
state, it automatically issues the run fan command. Then the inverter detects the DC
fan lock state, and turns ON the LIFE or OH output or enters the alarm OH1 state.)
Note that, operating the inverter with the DC fan being locked for a long time may shorten the
service life of electrolytic capacitors on the PCBs due to local high temperature inside the
inverter. Be sure to check with the
LIFE signal etc., and replace the broken fan as soon as
possible.
IP21/IP55 switch (Bit 7)
Switch this when changing the protection structure from IP21 to IP55. With respect to
protection coordination, a protection level which suits for IP55 is resulted.
To set data of function code H98, assign the setting of each function to each bit and then
convert the 8-bit binary to the decimal number.
Refer to the assignment of each function to each bit and a conversion example below.
Factory default
Bit Function Data setting range
IP21 IP55
0
Lower the carrier
frequency automatically
0: Disable
1: Enable
1: Enable 1: Enable
1 Detect input phase loss
0: Continue to run
1: Enter alarm
processing
1: Enter alarm
processing
1: Enter alarm
processing
2 Detect output phase loss
0: Continue to run
1: Enter alarm
processing
0: Continue to
run
0: Continue to
run
3
Select life judgment
threshold of DC link bus
capacitor
0: Factory default
1: User-defined setting 0: Factory default 0: Factory default
4
Judge the life of DC link
bus capacitor
0: Disable
1: Enable
1: Enable 1: Enable
5
DC fan lock detection
(Available for IP00-rated
inverters of 110 kW or
above, IP21-rated ones of
45 kW or above, and
IP55-rated ones of 11 kW
or above)
0: Enable
1: Disable
0: Enable 0: Enable
6 -- -- -- --
7
Switch IP21/IP55
enclosure
0: IP21
1: IP55
0: IP21 1: IP55