Configuration Mode (ConF)
Code Nam e / De s cription Adjustment range Factory setting
HFI
*
nO
YES
[HF inj. activation]
[No]
(nO)
Activation of high frequency signal injection in RUN. This function allow s to estimate the motor speed in a view to have torque
at low speed w ithout speed feedback.
Note:
The more the saliency is high, the more the
[HF inj. activation]
(HFI)
function w ill be efficient.
In order to ensure the performances, it could be necessary to adjust the speed loop parameters (
[K s peed loop filte r]
(SFC),
[Spee d
time
integ ra l]
(
SIt
)
and
[Spee d
prop.
gain]
(
SPG
),
see
page
118)
and
the
speed
estimation
phase
locked
loop
(Expert parameters
[HF pll bandw ith]
(SPb) and
[HF pll dum p. factor]
(SPF), see page 116).
High frequency injection is not efficient w ith low saliency motors (see
[Salie ncy m ot. s tate]
(SMOt) page 114).
It is advised to have 4 kHz of pw m frequency (
[Sw itching fre q.]
(SFr)).
In case of instability w ith no load, it is advised to decrease
[Speed prop. gain]
(SPG) and
[HF pll bandwith]
(SPb). Then,
adjust the speed loop parameters to have the dynamic behavior and the PLL gains to have a good speed estimation at low
speed.
In case of instability w ith load, it could help to increase the
[Angle e rror Comp.]
(PEC) parameter (mainly for SPM motor).
[No]
(nO): Function deactivated
[Ye s ]
(YES): High frequency injection is used for speed estimation
(1)
In corresponds to the rated drive current indicated in the Installation manual and on the drive nameplate.
(2)
On the integrated display unit: 0 to 9,999 then 10.00 to 65.53 (10,000 to 65,536).
These parameters only appear if the corresponding function has been selected in another menu. When the parameters can
also be accessed and adjusted from w ithin the configuration menu for the corresponding function, their description is detailed
in these menus, on the pages indicated, to aid programming.
Parameter that can be modified during operation or w hen stopped.
To change the assignment of this parameter, press the ENT key for 2 s.
Parameters described in this page can be accessed by:
DRI- > CONF > FULL > DRC- > SYN-
2 s
*
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