89
4. Parameter description
Parameter
• Assume that the rated full-load current of the inverter is 20A, P.62=5% and P.63=0.5s, in this case
if the output current is lower than 20
×
5%=1A for more than 0.5s, a signal(OMD) is output, which
is depicted in the figure below.
• If the set value of P.62 or P.63 is 9999, the zero current detection is disabled.
Note: In this paragraph OMD is one of the function names of ‘multi-function output terminal’. Please refer to P.40
for function selection and features, and section 2-5 for wiring.
4.29
Retry (P.65, P.67, P.68, P.69)
P.65 “Retry selection”
P.67 “Number of retries at alarm occurrence”
P.68 “Retry waiting time”
P.69 “Retry accumulation times”
● When an alarm occurs, the previous states before the alarm will be restored automatically, which is
called ‘retry’.
●
The Retry of the inverter is the conditional execution
. For example, the first alarm occurs and the retry
has been executed. Unfortunately, a second alarm occurs successively within P.68*5 seconds. Such
a case is defined as ‘continuous alarms’. In case the continuous alarms occur for more times than
the pre-defined upper limit, a great malfunction is indicated, thus special measures should be taken
manually. At this time, the retry will not be executed any more. The number of pre-defined times is
called ‘number of retries at alarm occurrence (P.67)’.
●
If the alarm is not belong to
‘
Continuous alarm
’
, the inveret can perform unlimited number of times reset.
● The period from the moment of alarm to that of retry is defined ‘retry waiting time’.
Parameter Factory setting
Setting range
Remarks
65
0
0~4
---
67
0
0~10
---
68
6s
0~360s
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