Specifications
62
Alarm Detection
Alarms are detected as a type of inverter protection function that do not operate the fault contact output. The system will
automatically returned to its original status once the cause of the alarm has been removed.
Alarm
Forward/Reverse Run
Commands Input
Together （EF）
Main Circuit
Undervoltage （UV）
Main circuit
Overvoltage （OV）
Cooling Fin
Overheating （OH）
Inverter Overheating
Pre-alarm （OH2）
Motor Overheating （OH3）
Overtorque 1 （OL3）
Overtorque 2 （OL4）
Undertorque 1 （UL3）
Undertorque 2 （UL4）
Overspeed （OS）
PG Disconnected （PGO）
Excessive Speed
Deviation （DEV）
External Fault
(Input Terminal S3) （EF3）
External Fault
(Input Terminal S4) （EF4）
External Fault
(Input Terminal S5) （EF5）
External Fault
(Input Terminal S6) （EF6）
External Fault
(Input Terminal S7) （EF7）
External Fault
(Input Terminal S8) （EF8）
External Fault
(Input Terminal S9) （EF9）
External Fault
(Input Terminal S10) （EF10）
External Fault
(Input Terminal S11) （EF11）
External Fault
(Input Terminal S12) （EF12）
PID Feedback
Reference Lost （FbL）
MEMOBUS Communications
Error
（CE）
Option Card
Communications Error
（BUS）
Communications on
Standby （CALL）
Both the forward and reverse run commands have been ON for more than 5 seconds.
Display Meaning
The following conditions occurred when there was no Run signal.
・The main circuit DC voltage was below the undervoltage detection level setting (L2-05).
・The inrush current limit contactor opened.
・The control power supply voltage was below the CUV level.
The main circuit DC voltage exceeded the overvoltage detection level.
200 V class: approx. 410 V, 400 V class: approx. 820 V
The temperature of cooling fins exceeded the setting in L8-02. (Factory setting: L8-03)
An OH2 alarm signal (inverter overheating alarm signal) was input from a multi-function input
terminal (S3 to S12).
E was set in H3-09 and the motor temperature thermistor input exceeded the alarm detection level.
There has been a current greater than the setting in L6-02 for longer than the time set in L6-03.
There has been a current greater than the setting in L6-05 for longer than the time set in L6-06.
There has been a current less than the setting in L6-02 for longer than the time set in L6-03.
There has been a current less than the setting in L6-05 for longer than the time set in L6-06.
The speed has been greater than the setting in F1-08 for longer than the time set in F1-09.
PG pulses were not input when the inverter was outputting a frequency.
The speed deviation has been greater than the setting in F1-10 for longer the time set in F1-11.
An
“
external fault
”
was input from a multi-function input terminal.
A PID feedback reference loss was detected (b5-12 = 2) and the PID feedback input was less than
b5-13 (PID feedback loss detection level) for longer than the time set in b5-14 (PID feedback loss
detection time).
A normal reception was not possible for 2 seconds or longer after control data was received once.
A communications error was detected during a run command or a frequency reference mode from
a communications option card.
Data was not received properly when the power supply was turned on.
EF (blinking)
External Fault
UV (blinking)
DC Bus Undervolt
OV (blinking)
DC Bus Overvolt
OH (blinking)
Heatsink Overtemp
OH2 (blinking)
Over Heat 2
OH3 (blinking)
Motor Overheat 1
OL3 (blinking)
Overtorque Det 1
OL4 (blinking)
Overtorque Det 2
UL3 (blinking)
Undertorq Det 1
UL3 (blinking)
Undertorq Det 2
OS (blinking)
Overspeed Det
PGO (blinking)
PG Open
DEV (blinking)
Speed Deviation
EF3 (blinking)
Ext Fault S3
EF4 (blinking)
Ext Fault S4
EF5 (blinking)
Ext Fault S5
EF6 (blinking)
Ext Fault S6
EF7 (blinking)
Ext Fault S7
EF8 (blinking)
Ext Fault S8
EF9 (blinking)
Ext Fault S9
EF10 (blinking)
Ext Fault S10
EF11 (blinking)
Ext Fault S11
EF12 (blinking)
Ext Fault S12
FBL (blinking)
Feedback Loss
CE (blinking)
MEMOBUS
Com Err
BUS (blinking)
Option Com Err
CALL (blinking)
Com Call
Current Alarm
#
（HCA）
The output current has exceeded the
overcurrent alarm level (over 150% of the rated current).
HCA (blinking)
High Current Alarm
Cooling Fan
Maintenance Timer
#
（LT-F）
Monitor U1-63 has reached 100%.
LT-F (blinking)
Fan Maintenance
Electrolytic Capacitor
Maintenance Timer
#
（LT-C）
Monitor U1-61 has reached 100%.
LT-C (blinking)
C Maintenance
# Available only for PRG:1039 or later.