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Table 13 — VFD Trip Messages for 50XJ Unit
LED MESSAGE
nErr
Displayed in the trip history in standard monitor mode when no trip has been recorded
since the last VFD reset or trip clear.
OC1
Overcurrent during acceleration trip
OC2
Overcurrent during deceleration trip
OC3
Overcurrent during normal (constant speed) run trip
OC1P
Overcurrent in DC section during acceleration trip
OC2P
Overcurrent in DC section during deceleration trip
OC3P
Overcurrent in DC section during normal (constant speed) run trip
OCL
Load end over current trip detected at start-up (output terminals, motor wiring, etc.)
OCA1
U-phase short circuit trip detected at start-up
OCA2
V-phase short circuit trip detected at start-up
OCA3
W-phase short circuit trip detected at start-up
OP1
Overvoltage during acceleration trip
OP2
Overvoltage during deceleration trip
OP3
Overvoltage during normal (constant speed) run trip
OLIn
VFD overloaded trip
OLnt
Motor overloaded trip
OCr
Dynamic braking resistor overcurrent trip
OLr
Dynamic braking resistor overload trip
OH
Inverter overheat trip
E
Emergency off trip message. Displayed after the STOP/RESET key has been pressed
once when in Auto Control mode, or press STOP/RESET key twice within one second
in Manual control mode.
EEP1
EEPROM failure during write cycle
EEP2
EEPROM abnormality during initial reading
Err2
RAM error
Err3
ROM error
Err4
CPU error
Err5
Communication interruption error
Err6
Gate array error
Err7
Output current detection circuit error
Err8
Option PCB error trip
Err9
Option ROM error
UC
Low operating current trip
UP1
Main circuit undervoltage trip
Ot
Overtorque trip
EF1
Software detected earth fault trip
EF2
Hardware detected earth fault trip
Etn
Auto-tuning error
EtYP
Inverter typeform and EEPROM typeform mismatch error
dANP
Damper trip. When damper function is selected, and damper is closed while the motor
is running.
LOSS
IV analog input loss. Valid when LA15 = 3 and frequency command is selected from
IV analog input terminal.
LEGEND
CPU
— Central Processing Unit
IV
— Analog Input Terminal
PCB
— Printed Circuit Board
RAM
— Random Access Memory
ROM
— Read-Only Memory
U-phase
— Phase 1 Output (T1)
V-phase
— Phase 2 Output (T2)
W-phase — Phase 3 Output (T3)
EXPLANATION
21
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