7
-24
executed,
it means that the DC injection braking is not decelerating enough. Adjust the DC injection braking
as
follows:
•
Increase
the parameter b2-02 (DC Injection Braking Current) setting.
•
Increase
the parameter b2-04 (DC Injection Braking (initial excitation) Time at Stop) setting.
K
K
K
K
If
0
V
Is
Detected
When
the
Fan
Is
Started,
or
the
Fan
Stalls
Generation
of 0 V (main circuit voltage) and stalling can occur if the fan is turning when it is started. The DC
injection
braking is insufficient when starting.
This
can be prevented by slowing fan rotation by DC injection braking before starting the fan. Increase the
parameter
b2-03 (DC injection braking time (initial excitation) at start) setting.
K
K
K
K
If
Output
Frequency
Does
Not
Rise
to
Frequency
Reference
Use
the following information if the output frequency does not rise to the frequency reference.
n
The
frequency
reference
is
within
the
jump
frequency
range.
When
the jump frequency function is used, the output frequency does not change within the jump frequency
range.
Check to be sure that the Jump Frequency (parameters d3-01 to d3-03) and Jump Frequency Width
(parameter
d3-04) settings are suitable.
n
The
frequency
reference
upper
limit
has
been
reached.
The
output frequency upper limit is determined by the following formula:
Maximum
Output Frequency (E1-04)
×
Frequency Reference Upper Limit (d2-01) / 100
Check
to be sure that the parameter E1-04 and d2-01 settings are suitable.
K
K
K
K
Oscillation
occurs
when
using
energy-saving
control
The
energy-saving control setting may be incorrect. If oscillation occurs during energy-saving operation, mea-
sure
the oscillation frequency. If the oscillation cycle matches b8-05 (power detection filter time constant), the
search
operation will be adversely affected. Set b8-06 (search operation voltage limiter) to 0 to disable search
operation,
or increase the power detection filter time constant.
K
K
K
K
An
EF
(Forward/Reverse
Run
Commands
Input
Together)
was
detected
and
the
Inverter
will
not
operate,
or
the
motor
operates
for
only
an
instant
when
the
control
equipment
power
supply
is
turned
OFF.
When
the EF is detected and the Inverter will not operate, use one of the following measures.
n
Incorrect
Sequence
If
the EF is detected when the forward reference and reverse reference are input simultaneously for 0.5 second
or
more, revise the sequence.
Содержание SYSDRIVE 3G3RV
Страница 1: ...USER S MANUAL SYSDRIVE 3G3RV High function General purpose Inverters Cat No I532 E1 1...
Страница 36: ...1 22...
Страница 106: ...3 14...
Страница 126: ...4 20...
Страница 216: ...5 90...
Страница 388: ...7 26...