Omron SYSDRIVE 3G3EV User Manual page 85

Operation
H Data Display and Action to be Taken when Warning Status
Arises
The ALARM indicator flashes when warning status arises. The data display section also
flashes.
When warning status arises, no error code is output.
Eliminating the cause recovers the system automatically.
Data
display
ef
Simultaneous input of forward and
reverse rotation commands
flashing
Forward and reverse rotation
commands were simultaneously input
for 0.5 second or more.
uU
Main circuit undervoltage (UV)
flashing
The DC voltage of the main circuit
dropped below the low-voltage
detection level when the Inverter was
stopped.
%U
Main circuit overvoltage (OV)
flashing
The DC voltage of the main circuit
exceeded the overvoltage detection
level when the Inverter was stopped.
%h
Radiation fin overheated (OH)
flashing
The radiation fin overheated when the
Inverter was stopped.
Digital Operator stopped (STP)
flashing
The STOP/RESET Key on the Digital
(see note)
Operator was pressed while the
Inverter was being operated using
control circuit terminals SF and SR.
%l3
Over-torque (OL3)
flashing
The flow of current exceeded the
value determined with the constant
set in n51 for more than the specified
period determined with the constant
set in n52.
bb
External base block in progress
(bb)
flashing
An external base block signal was
input.
Description Action
• Review the sequence.
• Check the power voltage.
• Check the power input line for discon-
nection.
• Check the terminal block screws for
looseness.
• Check the power voltage.
• Check the ambient temperature.
• Install a cooling fan or air conditioner.
• Open both SF and SR.
• Make sure that the n51 and n52 set-
tings are appropriate.
• Check the operating status of the me-
chanical system and remove the
cause of the error.
• Make sure that the sequence circuit is
appropriate.
Chapter 5
5-3