Trend NX Variable Speed Drives Manuale Utente Scaricare il pdf (Pagina 96)

CONTROL KEYPAD vacon • 79

24-hour support +358 (0)40 837 1150 • Email: [email protected]

7.3.4.2 Fault codes

The fault codes, their causes and correcting actions are presented in the table below. The shadowed faults

are A faults only. The items written in white on black background present faults for which you can program

different responses in the application. See parameter group Protections.

Note: When contacting distributor or factory because of a fault condition, always write down all texts and

codes on the keypad display.

Fault

code

Fault Possible cause Correcting measures

1 Overcurrent Frequency converter has detected too

high a current (>4*I

) in the motor cable:

− sudden heavy load increase

− short circuit in motor cables

− unsuitable motor

Check loading.

Check motor.

Check cables.

2 Overvoltage The DC-link voltage has exceeded the

limits defined in Table 4-7.

− too short a deceleration time

− high overvoltage spikes in supply

Make the deceleration time longer. Use

brake chopper or brake resistor (avail-

able as options)

3 Earth fault Current measurement has detected that

the sum of motor phase current is not

zero.

− insulation failure in cables or motor

Check motor cables and motor.

5 Charging

switch

The charging switch is open, when the

START command has been given.

− faulty operation

− component failure

Reset the fault

and restart.

Should the fault re-occur, contact the

distributor near to you.

Please visit:

http://www.vacon.com/wwcontacts.html

6 Emergency

stop

Stop signal has been given from the

option board.

7 Saturation trip Various causes:

− defective component

− brake resistor short-circuit or

overload

Cannot be reset from the keypad.

Switch off power.

DO NOT RE-CONNECT POWER!

Contact factory.

If this fault appears simultaneously with

Fault 1, check motor cables and motor

8 System fault - component failure

- faulty operation

Note exceptional fault data record, see

7.3.4.3.

S1 = Feedback of motor voltage

S2 = Reserved

S3 = Reserved

S4 = ASIC trip

S5 = Disturbance in VaconBus

S6 = Feedback of charging switch

S7 = Charging switch

S8 = No power to driver card

S9 = Power unit communication (TX)

S10 = Power unit communication (Trip)

S11 = Power unit comm. (Measurement)

Reset the fault

and restart.

Should the fault re-occur, contact the

distributor near to you.

Please visit:

http://www.vacon.com/wwcontacts.html

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