Table of Contents
Advertisement
Fault Display
PF
Input Pha Loss
LF
Output Pha Loss
RR
Dyn Brk Transistr
RH
Dyn Brk Resistor
OS
OS
Overspeed Det
PGO
PG open
DEV
Speed Deviation
OPR
Oper Disconnect
ERR
EEPROM R/W Err
CALL
Serial Com Call
CE
Memobus Com Err
CF
Out of Control
SVE
Zero Servo Fault
EF
External Fault
EF3
External Fault 3
EF4
External Fault 4
EF5
External Fault 5
EF6
External Fault 6
64
Table 31
Fault Diagnosis and Corrective Actions (Cont'd)
Description
⋅Inverter input power supply has open−
phase.
Input open−phase
⋅Large unbalance in input voltage.
Output open−phase
Inverter output has open−phase.
Braking transistor
The braking transistor has failed.
failure
The braking resistor unit temperature has
Braking resistor unit
exceeded the allowable value.
overheat
(Protects only inverter built−in type)
The motor speed exceeded the overspeed
The motor speed exceeded the overspeed
Overspeed (OS)
Overspeed (OS)
level.
PG open circuit (PGO)
The PG line is broken.
The deviation of the speed reference and
speed feedback exceeded the regulation
Speed deviation (DEV)
level.
The digital operator was disconnected
Digital operator
during operation by run command from
connection fault
the digital operator.
EEPROM writing fault
EEPROM internal data did not match
(ERR)
when initializing the constant.
Control data was not received normally
SI−B transmission error
when power supply is turned ON.
Control data was not received normally
Transmission error
when power supply is turned ON.
In open loop vector control, it took 3
seconds or more for torque limit during
Control fault
deceleration to stop.
The rotation position deviated by 10000
r/min or more during zero−servo opera-
Zero−servo fault
tion.
Operation reference
Both FWD and REV run commands were
fault (External)
closed for 500 ms or more.
External fault at
terminal 3
External fault at
terminal 4
Fault occurred in the external control
Fault occurred in the external control
circuit.
External fault at
terminal 5
External fault at
terminal 6
Details
⋅Check the line voltage.
⋅Re−tighten the input terminal
screws.
⋅Check the output wiring.
⋅Check the motor impedance.
⋅Re−tighten the output terminal
screws.
Replace the inverter.
Reduce the regenerative load.
⋅Check the PG line.
⋅Check the condition of the motor
lock or the load.
Check the load.
Check the operator connection.
Replace the control card.
Check transmission devices and
transmission signals.
Check transmission devices and
transmission signals.
Check the motor−related
constants.
⋅Check that the torque limit value
is not too low.
⋅Check that the load torque is not
excessive.
⋅Check the noise of PG signals.
Check sequence circuit.
Check the condition of the input
terminal.
If the fault is displayed when
If the fault is displayed when
terminal is not connected, replace
the inverter.
Rank*
Corrective Action
(Standard
Value)
A
A
A
A
A
A
A
B
A
A
C
A
A
A
B
A
B
B
B
Hide quick links:
Advertisement
Table of Contents
