Toshiba Tosvert VF-A5 Manual de usuario descargar pdf (Pagina 104)

Table 11-1 Fault displays, details, and remedies

Display Details Presumed causes

Remedies

Reference

page

ПРЭ

Overvoltage during

constant speed run

• The input voltage fluctuated abnormally.

© The power source capacity is SOOkVA

or more.

® Power-factor improvement capacitors

went on-line/off-line.

® A device using thyristors is connected

to the same power line.

Try inserting an input AC reactor.

13

• The motor is rotating at a frequency

higher than the inverter output frequency

due to a force on the load, and is in a

regenerative state.

© There are multiple machanioaily-

coupled motors.

® The load undergoes piston-type cyclic

movement

Change the load so that a regenerative

state is not entered.

Install a dynamic braking resistor.

17

DL In

Inverter overload

• Sudden motor acceleration was

attempted.

Decrease the acceleration time

[ЯСС 1 •

48

-

• The DC injection current (time) is set too

high Oong).

Decrease the DC injection current

1 cfb C 1 DC injection time

74, 75, 76

1db fc 1 '

• Start was attempted on a rotating motor

after momentary power failure, etc.

Use auto-restart or regeneration power

ride-through control.

79

• The load is too large. Increase the inverter rating.

90

DL ЛЬ

Motor overload

• V/f is incorrect

Check the V/f pattern setting.

45

• The motor is constrained.

Check the load equipment.

5

• Continuous running at low speeds.

• Motor is being operated in the overload

area.

Adjust I D L Г" i according to the

motor's overload handling characteristics

at low speeds.

72

DCr Dynamic braking

resistor overcurrent

trip

• The motor decelerated suddenly.

Decrease the deceleration time

1 oLEL l •

48

OLr

Dynamic braking

resistor overload

• The DC injection current is too high.

Decrease the DC injection current

1 cf ЫГ 1 and DC injection time

74, 75, 76

trip

1dbb 1 •

DH

Overheat

• The cooling fan is not working.

Check the cooling fan.

—

• The fan ventilation inlet is blocked.

• Another heat-generating device is located

nearby.

Check the inverter installation space.

Do not place heat-generating devices near

the inverter.

2

• The thermistor in the unit is dislocated.

Check the main circuit PCB CN6.

£ Emergency stop

• Motor was stopped during automatic run

or remote operation with the panel.

Reset.

43, 44

EEP 1

EEPROM fault

• An error occurred during writing of data

to the EEPROM.

Cycle power to the unit OFF/ON. If the

error persists, repair is required.

44

ЕЕРБ

Initial read fault

• Fault in the internal data.

Repair is required.

—

Er r S

RAM fault

• Fault in the microcontroller RAM.

Repair is required.

—

Er г 3

ROM fault

• Fault in the microcontroller ROM.

Repair is required.

Er г Ч

CPU fault

• Fault in the microcontroller CPU.

Repair is required.

—

ErrS

Communication

• A fault occurred during communication

Check the communication device and

_

operating

command fault

operation.

wiring, etc.

ЕггБ

Gate array fault

• Fault in the main gate array.

Repair is required.

_

Err!

Output current

detection device

fault

• Fault in the output current detection

device

Repair is required.

—

Er r В

Option PCB fault

• Fault in an option PCB.

Check the option PCB connections, etc.

*UE Low current run

condition trip

• The output current dropped to the low

current detection level while running.

—

98 -

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