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4. Parameter description
Parameter
4.28
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 shall be executed for limited times. For example, the first alarm occurs and the retry has
been executed. Unfortunately, a second alarm occurs successively within 30 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)
’
.
●
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
1s
0~360s
---
<Setting>
•
When P.65=0, retry is invalid. When alarm occurs, the voltage output is stopped, the
‘
Alarm
’
lamp
is lit, and all the inverter functions are disabled.
•
When P.65=1,
in case
‘
over-voltage between P-N
’
occurs, the voltage output is stopped. After a
period of waiting time (the set value of P.68), the retry is executed.
•
When P.65=2,
once
‘
over-current
’
occurs, the voltage output is stopped. After a period of waiting
time (the set value of P.68), the retry is executed.
•
When P.65=3, in case
‘
over-voltage between P-N
’
or
‘
over-current
’
occurs, the voltage output is
stopped. After a period of waiting time (the set value of P.68), the retry is executed.
•
When P.65=4, retry is effective. When alarm occurs, the voltage output is stopped. After a period of
waiting time (the set value of P.68), the retry is executed.
•
When P.67=0,
Retry is invalid.
•
When P.67
≠
0, given continuous alarm occurs for times within the pre-defined upper limit of P.67,
retries will be valid. However, once the upper limit is exceeded, the retry is valid no more.
•
For each time the retry occurs, the value of P.69 will be increased by 1 automatically, so the number
of P.69 read from the memory just indicates the number of retry accumulation times.
•
If P.69 is rewritten with 0, the number of retry executed is erased.
Note: Assume that all alarms are not continuous alarms, and the retry can be executed for unlimited times.
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