01/02 AWB8230-1413GB
Automatic restart after a fault
133
Figure 134: Motor frequency lower than set under PNU b007
U
LN
: Supply voltage
U
2
: Output voltage
n
M
: Motor speed
t
0
:
Duration of supply failure
a
Free run stop (coasting)
U
2
U
LN
n
M
PNU b003
PNU b002
t
0
PNU b007
a
PNU
Name
Adjustable in RUN mode
Value
Function
WE
Normal
Extended
b001
Restart mode
–
j
00
The above fault messages are displayed when the associated
fault occurs (restart is not activated).
00
01
A restart takes place at the starting frequency after the time
set under PNU b003 has elapsed.
02
After the time set under PNU b003 has elapsed, the
frequency inverter synchronizes to the current motor
rotation speed and the motor accelerates for the set
acceleration time.
03
After the time set under PNU b003 has elapsed, the inverter
synchronizes to the current motor rotation speed and the
motor brakes for the set deceleration time. A fault message
is then displayed.
b002
Permissible
power failure
duration
–
j
0.3 to 1.0 s
Here, set a time duration for which the undervoltage
condition is met without the corresponding fault message in
E09 being issued.
1.0
b003
Waiting time
before restart
–
j
0.3 to 100 s
Here, set a time which is to expire before an automatic
restart is initiated after a fault signal. This time can also be
used in conjunction with the FRS function. During the delay,
the following message appears on the LED display:
1.0
b004
Fault message
issued
immediately
–
j
00
In the event of an intermittent power supply failure or
undervoltage, the frequency inverter does
not
go into fault
status.
00
01
In the event of an intermittent power supply failure or
undervoltage, the frequency inverter goes into fault status.
02
In the event of an intermittent power supply failure or
undervoltage
at standstill or during deceleration
, the
frequency inverter does
not
go into fault status.
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