Lenze Range 7800 User Manual
Page 25
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24
Function code
21
This functian allows
tor a comparison between the momentary
rotational
field trequency and a programmed trequency.
lt
the two
trequencies
are
ideritical,
the output „SAR“ is
activated tor at
least
100
insec.
The compared treguency is set in Hz.
(Factory setting is
50 Hz).
Function code 22
The opto-coupler output
T‘SST“
Is activated lt the rotational
field
freguency duririg the deceleration phase is smaller than or
equal to
the programmed frequency (0 to
3 Hz). The output is
active tor
~t
least
100 msec.
The compared freguency is set accordlng to the
tollowing table.
Data code
Inverter autput
treguency
[Hz]
Function code 23
Function code 23
determines the motor‘s mode at
operation in the
deceleration phase.
Data code
00
:
lt the rotational
tield trequency has
reduced
to
<
2 Hz,
the motor idles.
01
This data code must be selected,
it
the
inverter
is to be operated with the braking
chopper.
~
lt
the
ratational
tield
trequency
has reduced
tO
<
2Hz, the motor
is braked
down to standstill
~~iith
DC
injectian current.