Danfoss VLT 5000 FLUX Instructions d'exploitation télécharger pdf (Page 131)

VLT

5000 FLUX

(BRAKE IGBT FAULT) [2]

The brake IGBT has short-circuited. This fault means

that the unit is not able to stop the brake and that,

consequently, the resistor is constant being energized.

WARNING/ALARM: 44

Encoder loss (ENCODER FAULT)

The encoder signal is interrupted from terminal

32 or 33. Check the connections.

LEDs on encoder board:

When all LEDs are ON the connection to encoder

and encoder condition are OK.

LED 403 OFF: 5 V supply missing

LED 400 OFF: Channel A or inv. A missing

or shortcircuited

LED 401 OFF: Channel B or inv. B missing

or shortcircuited

LED 402 OFF: Channel Z or inv. Z missing

or shortcircuited.

ALARM 48:

Tracking fault

The following events can generate Alarm 48:

• Parameter 361 set too low: Extend the range

• Wrong encoder direction: Motor goes one way,

the encoder goes the other way

• Running in torque limit: Insufficient torque to follow

the ramp, hitting an obstruction, etc.

• Bad PID settings: Oscillations can produce

large errors. Readjust the PID control

(Parameters 417 and 418)

MG.55.A7.02 - VLT is a registered Danfoss trademark

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Danfoss VLT 5000 FLUX Instructions d'exploitation Page 131