Failure Indication And Details - YASKAWA Varispeed-616GII Instruction Manual

8. FAILURE INDICATION AND DETAILS
As Table 7 shows, the failure that the VS-616GII detects is classi-
fied into trouble and alarm . When trouble occurs, the failure contact is
output and the operation stops after coasting . When an alarm is
issued, the digital operator indicates the alarm for warning . (An
alarm is not stored in the inverter .)
Table 7 Failure Indication and Details
Indication Failure Indication Item Description
Failure
Classification
UU Blink A low voltage being detected
Two seconds are being counted after
Alarm
the detection of low voltage
OU Blink
Overvoltage during stop
The DC voltage is higher than the
Alarm
specified value
An overheat signal is entered from the
OH2 Blink Inverter overheat is predicted Alarm
external terminal
OL3 Blink Overtorque being detected
Operation continues despite over-
Alarm
torque
Eb Blink
Both forward run and reverse run Deceleration stop (Not stored
Alarm
commands are closed internally )
The DC voltage is lower than the
UU Low voltage
specified value
Trouble
FU
Fuse blown The main circuit fuse is blown Trouble
OC
Overcurrent
A current surge of about 200° or
Trouble
more occurs
The DC voltage is higher than the
OU
Overvoltage
specified value
Trouble
The thermo-switch for the radi-
OH
The radiation fin overheated
fin
Trouble
ation operates
OL 1 Overload
Protect the motor Trouble
OL 2
Overload
Protect the inverter Trouble
OL 3
Overtorque
Overtorque cau$es the operation to
Trouble
stop after coasting .
An external failure signal stops
Eb
External failure
Trouble
operation
CPF
Control function self-diagnosis
When DSPL/ENTR key is depressed .
Trouble
function is faulty. CPF content appears
OPE
Illegal constant is set"
Constant logic is not coincident Trouble
. . . . . Control function hardware is faulty .
Watchdog error Trouble