58
* When faulted, drive output shuts off and motor coasts to a stop.
4
4..4
4 F
FA
AU
UL
LT
T D
DIIS
SP
PL
LA
AY
YS
S..
Digital
Operator
Display
Status LEDs
RUN
(green)
ALARM
(red)
Description
Possible Causes /
Corrective Actions
OFF
ON *
oC
Overcurrent – drive output
current momentarily
exceeded 250% of rated
current.
ou
Main circuit overvoltage –
DC voltage exceeded 410V
for a 230V rated drive, or
exceeded 820V for a 460V
rated drive.
• Short circuit at drive
output
• Excessive load inertia
• Accel/decel time (
n20 to
n23 ) too short
• Special motor use
• Starting a coasting motor
• Motor with larger capacity
than drive
• Magnetic contactor at
drive output is ON/OFF
Check main circuit power
supply voltage. If fault
occured during decel, may
be due to excessive
regenerative energy from
the motor – increase decel
time (
n21 or n23 ) or
connect a braking resistor.
Uu2
IGBT module control power
supply fault.
Turn the power supply off,
then on again. If the fault
remains, replace the drive.
Uu1
Main circuit under voltage –
DC voltage dropped below
210V for a 230V drive, or
below 420V for a 460V rated
drive.
Input power supply voltage
is reduced, phases are
opened or momentary
power loss occurs. Check
the voltage, verify that main
circuit power supply wiring
is connected and terminal
screws are securely
tightened.
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