6.3 If an Alarm Code Appears on the LED Monitor
6-5
TROUBLESHOOTING
Chap 6
Continuation of Table 6.3-1
Alarm code Alarm code name
Heavy
failure
object
Light
alarm
selectable
Alarm subcode* Alarm subcode name
page
0c1
Instantaneous overcurrent Y — Y 1 to 5001 For manufacturer 6-16
0c2
0c3
0h1
Cooling fin overheat Y Y Y
6 Detection of fan stop
6-16
Other than above For manufacturer
0h2
External alarm Y Y — — — 6-17
0h3
Inverter internal overheat Y Y Y
0 Internal air overheat
6-17 1 Charging resistor overheat
Other than above For manufacturer
0h4
Motor protection (PTC
thermistor)
Y — Y — — 6-18
0h6
Charging resistor overheat
Y
Y
Y — — 6-18
0l1
Motor 1 overload
Y
Y — —
6-19
0l2
Motor 2 overload
Y
Y Y
— —
0lu
Inverter overload Y — Y
1 IGBT protection
6-20 2 Inverter overload
10 For manufacturer
0pl
Output phase-failure
detection
Y — — 1 to 10 For manufacturer 6-20
0s
Overspeed protection Y — — — — 6-21
0u1
Overvoltage Y — Y 1 to 12 For manufacturer 6-21
0u2
0u3
pbf
Charger circuit fault
(FRN0203E2■-4 or
above)
Y
— — 1 to 2 For manufacturer 6-22
pg
PG wire break
Y
— — 10 to 20 For manufacturer 6-22
cnT
Inverter life (Number of
startups)
— Y
— — —
6-23
fal
Detect DC fan lock
— Y
— — —
lif
Lifetime alarm
—
Y
— — —
0h
Cooling fin overheat early
warning
— Y
— — —
0l
Overload early warning
—
Y
— — —
pid
PID alarm output
— Y
— — —
pTc
PTC thermistor activated
—
Y
— — —
ref
Reference command loss
detected
— Y
— — —
rTe
Machine life (Cumulative
motor running hours)
—
Y
— — —
uTl
Low torque detection
— Y
— — —
NB) • If a control power supply voltage drops to such a level that the operation of the inverter control circuit
cannot be maintained, all protective functions are automatically reset.
• By OFF ON operation of
key or X terminal (assigned to RST) the protection stop state can be
released. In a state that an alarm cause is not removed, however, resetting operation is not effective.
• If two or more alarms are occurring, the resetting operation remains ineffective until all the alarm causes
are removed. Alarm factors not removed can be checked from the keypad.
• When assigned to light alarms, “30A/B/C” do not work.