This trip indicates that the drive has detected an input phase loss or large supply imbalance. Phase loss can be detected directly from the supply where the drive

has a thyristor base charge system (Frame size 8 and above). If phase loss is detected using this method the drive trips immediately and the xx part of the sub-trip

is set to 01. In all sizes of drive phase loss is also detected by monitoring the ripple in the d.c. link voltage in which case the drive attempts to stop the drive before

tripping unless bit 2 of Action On Trip Detection (10.037) is set to one. When phase loss is detected by monitoring the ripple in the d.c. link voltage the xx part of the

sub-trip is zero.

Source

Control

system

Power

system (1)

(1) Input phase loss detection can be disabled when the drive required to operate from the DC supply or from a single phase supply in

Input Phase Loss Detection Mode (06.047).

(2) For a parallel power-module system the rectifier number will be one as it is not possible to determine which rectifier has detected the fault.

This trip does not occur in regen mode.

Recommended actions:

Check the AC supply voltage balance and level at full load.

Check the DC bus ripple level with an isolated oscilloscope.

Check the output current stability.

Reduce the duty cycle.

Reduce the motor load.

Disable the phase loss detection by setting Input Phase Loss Detection Mode (06.047) to Disabled.

Trip

Phasing Error

Value

198

Short description

This indicates that the phase offset angle in Position Feedback Phase Angle (03.025) (or M2 Position Feedback Phase Angle (21.020) if the second motor map is

being used) is incorrect if position feedback is being used and the drive is unable to control the motor correctly.

Recommended actions:

Check the encoder wiring.

Check the encoder signals for noise with an oscilloscope.

Check encoder mechanical coupling.

Perform an auto-tune to measure the encoder phase angle or manually enter the correct phase angle into Position Feedback Phase Angle (03.025).

Spurious Phasing Error trips can sometimes be seen in very dynamic applications. This trip can be disabled by setting Over Speed Threshold (03.008) to a

value greater than zero.

If sensorless control is being used this indicates that significant instability has occurred and the motor has accelerated without control.

Recommended actions:

Ensure that the motor parameters are set-up correctly.

Reduce the speed controller gains.

Trip

Power Comms

Value

Short description

A Power Comms trip indicates a communications problem within the power system of the drive. The reason for the trip can be identified by the sub-trip number.

Type of drive xx

Single power

module

system

*For a parallel power-module system the rectifier number will be one as it is not possible to determine which rectifier has detected the fault.

Recommended actions:

Hardware fault - contact the supplier of the drive.

Powerdrive F300 Parameter Reference Guide

Issue: 01.15.00

00: Phase loss detected from d.c. link ripple

Rectifier number

00: Phase loss detected directly from the supply