sửa biến tần Fuji, bán biến tần cũ, mới. Sửa Biến tần SERVO HMI PLC Đồng Nai Bình Dương 0946

Keypad panel display

Alarm Name

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Contents of operation

LED LCD Over current OC1 OC DURING ACC

During
acceleration

If the inverter output current momentarily exceeds the overcurrent
detection level due to an overcurrent in the motor, or a short-circuit
or a ground fault in the output circuit, the protective function is
activated.

OC2 OC DURING DEC

During
deceleration

OC3 OC AT SET SPD

Running at
constant speed

Ground fault EF GROUND FAULT

If a ground fault in the inverter output circuit is detected, the protective function is
activated (for 40HP or more only). If a ground fault occurs in an inverter rated at
30HP or less, the inverter is protected by the overcurrent protection. If protection
against personal injury or property damage is required, install a ground-fault
protective relay or earth-leakage circuit breaker separately.

Overvoltage OU1 OV DURING ACC

During
acceleration

If the DC link circuit voltage of the main circuit exceeds the
overvoltage detection level (230V series: 400V DC,460V series:
800V DC) due to an increase in the regenerating current from the
motor, the output is shut down.
However, protection against inadvertent overvoltage apply (e.g.,
high-voltage line) may not be provided.

OU2 OV DURING DEC

During
deceleration

OU3 OV AT SET SPD

Running at
constant speed

Undervoltage LU UNDERVOLTAGE

If the DC link circuit voltage of the main circuit falls below the undervoltage detection
level (230V series: 200V DC,460V series: 400V DC) due to a lowered power supply,
the output is shut down. If function code F14 (Restart after momentary power failure)
is selected, an alarm is not displayed. In addition, if the supply voltage falls to a
level unable to maintain control power, an alarm may not be displayed.

Input open-phase Lin PHASE LOSS

If the inverter is driven with any one of the three phases connected to L1/R, L2/S and L3/T
of the main circuit power supply “open”, the rectifying diodes or smoothing capacitors may
be damaged, at such time an alarm is issued and the inverter is tripped.

Overheating of heat
sink

OH1 FIN OVERHEAT

If the temperature of the heat sink rises due to a cooling fan failure, etc., the
protective function is activated.

External alarm OH2 EXT ALARM

If the external alarm contacts of the braking unit, braking resistor or external thermal
O/L relay are connected to the control circuit terminals (THR), this alarm will be
actuated according to contact off signal.
When the PCT thermal protection is activated(H26:1), it operates when the detected
temperature is increased.

Inverter internal
overheating

OH3

HIGH AMB TEMP

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If the temperature inside the inverter rises due to poor ventilation, etc., the protective
function is activated.
Overcurrent of the terminal 13(20mA or more) due to the short circuit between the
terminal 13 and 11, etc., the protective function is activated.

Overheating of
braking resistor

dbH DBR OVERHEAT

If electronic thermal O/L relay (for braking resistor) function code F13 is selected, the
protective function is activated to prevent the resistor from burning due to overheating
following frequent use of the braking resistor.

Motor 1 overload OL1 MOTOR1 OL

The protective function is activated if the motor current exceeds the preset level,
provided that electronic thermal O/L relay 1 function code F10 has been selected.

Motor 2 overload OL2 MOTOR2 OL

If the second motor current exceeds the preset level when the operation is switched
to drive the second motor, the protective function is activated, provided that
electronic thermal O/L relay 2 of function code A04 is selected.

Inverter overload OLU INVERTER OL

If the output current exceeds the rated overload current, the protective function is
activated to provide thermal protection against semiconductor element overheating in
the inverter main circuit.

Blown fuse FUS DC FUSE OPEN

If the fuse in the inverter is blown out following a short-circuit or damage to the
internal circuit, the protective function is activated (for 40HP or more only).

Memory error Er1 MEMORY ERROR

If a memory error occurs, such as missing or invalid data, the protective function is
activated.

Keypad panel
communication
error

Er2 KEYPD COM ERR

If a communication error or interrupt between the keypad panel and control circuit is
detected, the protective function is activated.

CPU error Er3 CPU ERROR If an CPU error occurs due to noise, etc., the protective function is activated . Option error

Er4
Er5

OPTN COM ERR
OPTION ERROR

Error when using an optional unit Forced stop Er6 OPR PROCD ERR Error when using the forced stop command Output wiring error Er7 TUNING ERROR

If there is an open circuit or a connection error in the inverter output wiring during
performing auto-tuning, the protective function is activated.

RS-485
communication error

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Er8 RS-485 COM ERR