Adtech iMASTER - A1 Series, Руководство пользователя

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A1-User’s Manual
１３２

25.07 Filter bandwidth

Range: 0.0 ~ 1000 milliseconds in 0.1 ms

Initial value: 1 ms
Real time editable Iq feedback Low Pass Filter time constant

If output Frequency is not stable,

Increase '25.07' (Filter bandwidth) value

Recommended Value as a function of '25.05' (OVS D gain), '25.07' (Filter bandwidth)
value should be set accordingly

Not set over 50

25.08 Limit time

Range: 0.0 ~ 100 Sec in 0.1 Sec

Initial value: 0.5 Sec
Real time editable OVS control fails check time. If PID output is saturated to '25.02'
(Maximum OVS output frequency)
during this time period, VFD will stop and ovFS will be
occurred.
25.02 (Maximum OVS output frequency)
=
Frequency Add
25.08 (Limit time)
Trip (OVS fail)
=
Counter
80Hz
60Hz
0.5 Sec
Output frequency
Counter
Trip signal
예
) 25.08 (OVS limit) = 0.5 Sec
Case1) if frequency is increased at no regeneration condition,

Cause: when a current feedback value is corrupted by noise.

Measures:

Change a
'25.07' (Filter bandwidth)
and
'25.05' (OVS D gain)

Please set the
'25.07' (Filter bandwidth)
between 5 and 30 (ex 5, 10, 20, 30ms)