Omron SYSDRIVE 3G3SV-B2002-E User Manual page 61

Protection function
Low Main Inverter capacity is too small.
voltage circuit Voltage drop due to wiring.
protection voltage A motor of large capacity (11 kW or
low greater) connected to the same power
system has been started.
Rapid acceleration with generator power
supply
Operation sequence when power is off
Defective electromagnetic contactor
Overcurrent Extremely rapid accel/decel
protection Motor on/off switching at the inverter out-
put side
Short-circuit at the inverter output side
Motor of a capacity greater than the in-
verter rating has been started.
High-speed motor or pulse motor has
been started.
Ground-fault Ground-fault at the inverter output side
protection
Overvoltage Over voltage
protection Insufficient deceleration time
Regenerative load (Motor is turned by the
load.)
High input voltage compared to motor
rated voltage
Fuse blown Repeated overcurrent protection (OC)
Repeated overload protection (OL2) pow-
er reset
Rapid deceleration in excess excitation
(improper V/f characteristic setting)
Cooling fin overheat Defective cooling fan
Ambient temperature rise
Clogged filter
Overload Motor Overload, low speed operation or ex-
protection tended acceleration time, improper V/f
characteristic setting
Inverter
Over Motor current exceeds the preset value
torque because of machine error or overload
detection
External fault signal External fault condition occurred.
input
Control circuit fault External noise
thermistor fault Excess vibration or shock
Error causes Action to be taken
Check the power capacity and power
system.
UV display appears when the inverter
power is turned off while operation signal
is input. Remove the power after stop-
ping the inverter.
(Set the third bit of constant 1 to 01.)
Transistor error may occur. Investigate
the error cause, correct it, then restart.
If braking torque is not proper, extend the
decel time or use a braking resistor.
Turn off the power supply once and turn
it on again.
If the fault occurs again after replace-
ment, replace the inverter.
Replace the cooling fan and clean the
filter.
Ambient temperature: 122
less
Investigate the cause of overload and
review the operation pattern, V/f charac-
teristic, and motor/inverter capacities.
(If inverter is repeatedly reset after an
overload occurs, the inverter may fault. overload occurs the inverter may fault
Investigate and correct the cause of
overload.)
Check the use of the machine. Correct
the overload cause or set a higher detec-
tion level which is within the allowable
range.
Correct the cause of the fault input.

Record all data of and
make initialization.
Turn off power, then turn on again. If er-
ror is persistent, replace the inverter.
Section 2-11
 
F (50 C) or
 
, then