User Manual
EM303B General Purpose Inverter
153
FC-20
is for setting the upper limit of overvoltage protection.
The default is 380*1.414*128%=687VDC. Users do not need to adjust the value on general
conditions.
FC-22
and
FC-23
are the auto-regulation parameters of internal overvoltage protection.
They are used for after-sales regulation. The defaults can meet most of application needs.
8.13.16
Fault Retry
No.
Function
Range
Unit Default Type
FC-24
Fault Retry Control
Ones place: Fault retry times
0: Fault retry prohibited
1~3: Fault retry for 1, 2, and 3 times
4: Unlimited fault retry
Tens place: In fault retry, fault output
terminals will be
0: Off 1: On
00
〇
FC-25
Fault Retry Timelag 0.01
~
30.00
S
0.50
〇
FC-26
No Fault Timelag
0.01
~
30.00
S
10.00
〇
8.13.17
Whether Fault Retry Is Permitted and Retry Times
FC-24 ones place=0
If inverter trips fault in running process, it needs manual reset instead of
auto-reset.
FC-24 ones place=1/2/3
If inverter trips fault in running process, output will stop. It will
reset fault after the fault is cleared, and it will restart and run for 1/2/3 times. The time for
inverter running without fault exceeds no fault timelag (F1-26). Fault retry times reset the
setting value of F1-24 ones place. If fault retry times exceeds 1/2/3 times, fault still occurs,
then there is no auto-reset.
FC-24 ones place=4
If inverter trips fault in running process, output will stop. After fault is
cleared, inverter will reset fault automatically, and start again until resuming normal working
status.
1. The start-up feature has to be taken into consideration in applications. Fault
retry cannot be applied to the applications as start-up with load, or it has to alarm
immediately if the inverter has no output.
2. During the interval of auto-reset, inverter blocks PWM output and motor will coast to
stop.
8.13.18
External Output at Fault Retry
FC-24 tens place=0
During fault retry, fault output terminal and fault relay are off.
FC-24 tens place=1
During fault retry, fault output terminal and fault relay will be on.
8.13.19
Fault Retry Timelag
FC-25
is for controlling fault retry time-lag. Fault retry timelag refers to the time taken for