Operation
Chapter 5
5-1 Protective and Diagnostic Functions
The 3G3EV has excellent protective and diagnostic functions. The RUN
and ALARM indicators on the front panel indicate the current Inverter sta-
tus, and the data display section also displays information about an error
that has occurred. These functions therefore enable the user to take the
appropriate actions to correct most errors.
H List of Error Codes
Indicator
Inverter
status
Data
display
Description
RUN
Flashes
Lit
ALARM
Not lit
Not lit
Normal
---
---
ef
Ready to run
Normal operation in progress
Simultaneous input of forward and re-
verse rotation commands
Warning
Flashes
Flashes
Lit
Flashes
Lit
Main circuit undervoltage (UV)
Main circuit overvoltage (OV)
Radiation fin overheated (OH)
Digital Operator stopped (STP)
Overcurrent (OC)
Main circuit overvoltage (OV)
Main circuit undervoltage (UV1)
Control power supply fault (UV2)
Radiation fin overheated (OH)
Motor overload (OL1)
Inverter overload (OL2)
External fault (EF1)
Initial memory error
ROM error
Constant error
A/D converter error
Option error
Control circuit error
uU
%U
%h
Protective Not lit
mecha-
%c
%U
nism actu-
ated
uU1
uU2
%h
%l1
%l2
ef1
f00
f01
f04
f05
f06
(Not lit)
Inverter
error
Not lit
Not lit
Lit
Not lit
5-2
OMRON [ OMRON ELECTRONICS LLC ]
