To Next Page

To Previous Page

Menu 3

Regen

Parameter

structure

Keypad and

display

Parameter

x.00

Parameter

description format

Advanced parameter

descriptions

Macros

Serial comms

protocol

Electronic

nameplate

Performance RFC mode

84 Unidrive SP Advanced User Guide

www.controltechniques.com Issue Number: 10

At power-up this parameter is zero. Each time the regen unit is enabled the supply inductance is measured and displayed by this parameter. The

value given is only approximate, but will give an indication as whether the input inductance is correct for the sinusoidal rectifier unit size. The

sinusoidal filter capacitance masks the effect of the supply inductance, therefore the value measured is usually the regen unit input inductor value.

If an L.Sync trip occurs Pr 3.03 indicates the reason. At power-up and on trip reset this parameter is set to zero. Once an L.Sync trip has occurred this

parameter shows when the trip occurred and the reason for the last L.Sync trip as indicated by the bits in the table below. The reasons for the trip are

either because the supply frequency is out of range or the PLL (phase lock loop) within the drive cannot synchronize to the supply waveforms.

Pr 3.04 defines the action taken after enable and when a synchronization failure occurs.

0, rESYnC: Continuously attempt to re-synchronize

1, del.triP: delayed trip

Attempt to synchronize for 30s. If unsuccessful after this time then give a LI.SYnC trip. After a failure during running attempt to re-synchronize for 30s

before tripping.

2, triP: immediate trip

Attempt to synchronize for 30s. If unsuccessful after this time then give a LI.SYnC trip. After a failure during running, trip immediately.

3.02

Input inductance

Drive modes Regen