5.4 Details of Function Codes
5-182
H04, H05
Retry (Times and Wait Time)
When the retry function is used, the protection function of the retry objective operates, and even when the
inverter operation moves into the forcible stop status (tripped status), a bulk alarm is not output. Instead, trip
status is automatically reset, and the operation resumes. If the protective function is activated in excess of
the set retry times, a bulk alarm is output, and automatic reset operation does not starts.
Table 5.4-111 Protection function objective for retry
Protective function name Alarm indication Protective function name Alarm indication
Overcurrent protection
0c1
,
0c2
,
0c3
Motor overheat
0h4
Overvoltage protection
0u1
,
0u2
,
0u3
Braking resistor
overheat
dbh
Cooling fin overheat
0h1
Motor overload
0l1
to
0l4
Inverter internal overheat
0h3
Inverter overload
0lu
Number of retry times (H04)
H04 sets the number of times to automatically reset the tripped state.
- Data set range: 0, 1 to 10 (times) (0: retry function disabled)
If the retry function is selected, the inverter may automatically restart and run the motor stopped due to a
trip fault, depending on the cause of the tripping. Design the machinery so that human body and
peripheral equipment safety is ensured even when the auto-resetting succeeds.
Otherwise an accident could occur.
Retry wait time (H05)
- Data setting range: 0.5 to 20.0 (s)
H05 sets the time required until the trip state is automatically reset. See the following operation chart.
<Operation Chart>
- When a normal operation restarts in the 4th retry.
Fig. 5.4-80
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