User`s manual

90 FP5/GP5 User’s Manual
*oH1
Overheat
1
Heatsink overheat (OH1)
The transistor heatsink temperature
exceeded the allowable value
(Fin temperature > OH1 detection level).
Check the fan and ambient
temperature.
oH2
Overheat
2
Heatsink overheat (OH2)
The transistor heatsink temperature
exceeded the allowable value
(Fin temperature > OH2 detection level).
oL1
Overload 1
Motor overload (OL1)
Inverter output exceeded the motor
overload level (see n012).
Reduce the load.
oL2
Overload 2
Inverter overload (OL2)
Inverter output exceeded the inverter
overload level.
Reduce the load, extend the
acceleration time.
*oL3
Overload 3
Overtorque detection (OL3)
Inverter output current exceeded the
overtorque detection level (n078).
SC
Short Cir-
cuit
Load short-circuit (SC) Inverter output (load) is short-circuited.
·Check the motor coil resis-
tance.
·Check the motor installa-
tion.
EF0
Opt Exter-
nal Flt
External fault from serial
communication
Fault occurred in the external control
circuit.
Check the external control
circuit.
EF2
External
Fault 2
External fault at terminal S2
Fault occurred in the external control
circuit.
Check the condition of the
input terminal. If the LED
lights when terminal is not
connected, replace the
inverter.
EF3
External
Fault 3
External fault at terminal S3
EF4
External
Fault 4
External fault at terminal S4
EF5
External
Fault 5
External fault at terminal S5
EF6
External
Fault 6
External fault at terminal S6
SPI
Input Pha
Loss
Excessive ripple in the DC
bus
·Inverter input power supply has open
phase.
·Large unbalance in input line voltage.
·Check the line voltage.
·Re-tighten the output
terminal screws.
SPo
Output
Pha Loss
Output open-phase Inverter output has open phase. ·Check the output wiring.
LCD
Operator-
Fault
Display
Name Description Corrective Action
Chapter 4 - Diagnostics
Alarm & Fault Displays
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