Fuji Electric FRENIC MEGA G2 Series - Page 643

6.4 If a Warning Code is Displayed
6-29
TROUBLESHOOOTING
Chap 6
6.4 If a Warning Code is Displayed
6.4.1 Warning code list
It is possible to display a warning cause code while the inverter continues to run, and output a warning signal from
the Y terminal. To display the warning, select with function codes H81, H82, or H83. (See Chapter 5 “FUNCTION
CODES”.)
If outputting warning signals from the Y terminal, set 98 L-ALM for the function codes corresponding to E20 to E24.
Table 6.4-1 Warning code list
Warning
code
Warning name
Mode selection
Function code
Setting method
Ref.
page
CnT
Machine life (Number of startups)
H82
Bit 13
Refer to Chapter 5 “FUNCTION CODES” -
“5.3.5 H codes (High performance functions)”.
-
iGb
IGBT lifetime alarm
H83
Bit 13
lif
Lifetime alarm
H82
Bit 7
0H
Cooling fin overheat early warning
H82
Bit 6
0l
Motor overload early warning
H82
Bit 5
pid
PID alarm output
H82
Bit 9
pTc
PTC thermistor activated
H82
Bit 11
rAF
Cooling capability drop
H83
Bit 14
ref
Reference loss
H82
Bit 8
rTe
Machine life (Cumulative motor running hours)
H82
Bit 12
UTL
Low torque detection
H82
Bit 10
Lob
Low battery warning
H82
Bit 15
6.4.2 Warning cause and check
[ 1 ] CnT Machine life (Number of startups)
Possible cause
Check and measures
(1) Inverter life (Number of
startups)
This is displayed when the number of times that the motor is started
reaches the number of times set with function code H79 (maintenance
setting startup count).
Furthermore, the current startup count can be checked at function code
H44 (startup count), and therefore the H44 data should be set to “0000”
to reset the count.
[ 2 ] iGb IGBT lifetime alarm
Possible cause
Check and measures
(1) IGBT power cycle life
The element temperature power cycle life for the main circuit
semiconductor IGBT due to frequent acceleration and deceleration
stoppages is estimated, and this is displayed before the design life is
reached.
[ 3 ] lif Lifetime alarm
Possible cause
Check and measures
(1) Lifetime alarm
It is judged that the service life of any one of the capacitors (DC link bus
capacitors or electrolytic capacitors on PCBs), the cooling fan, or the
IGBT has expired.
(Refer to “7.4.1 Judgment on service life” in Chapter 7, and check the
part service life status in the keypad maintenance information.)