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6-16
6-7-3 Momentary Power Interruption Compensation
(n47)
•The parameter specifies the processing that will be performed when a momentary
power interruption occurs.
n47 Momentary Power Interruption
Compensation
Changes during
operation
No
Setting
range
0 to 2 Unit of
setting
1 Default setting 0
Set Values
Value Description
0 Disabled. (An undervoltage fault will be detected when there is momentary
power interruption for 15 ms or more.)
1 The Inverter will continue operating if power is restored within 0.5 s.
(see note 1)
2 The Inverter will restart when power is restored. (see note 2)
Note 1. An
undervoltage
warning is detected with the parameter set to 1. The Inverter
will
restart after speed
searching if power is restored within 0.5 s. If power failure
continues for more than 0.5 s, undervoltage fault 1 will be detected.
Note 2. No
undervoltage
warning is detected with the parameter set to 2. The Inverter
will restart after speed searching when power is restored.
6-7-4 Fault Retry (n48)
Caution The Inverter may be break if the fault retry function is used.
If the Inverter breaks, take the following measures:
Be sure to install a no-fuse breaker (NFB).
Provide the Inverter and peripheral machines with a sequence so
that
the machines will stop operating when the Inverter has an
op
-
erational fault.
•The fault retry function automatically resets and restarts the Inverter in the case the
Inverter has an overvoltage fault, overcurrent fault, or ground fault.
•In the case of any other fault, the protective function operates instantly and the fault
retry function does not operate.
•This
function is to be used only if the user does not
want to interrupt the mechanical
system, even if this function may damage the Inverter.
•Set n40 for multi-function output to the following value so that external overtorque
detection output will be turned on.
Set value: 14 for fault retries
Advanced Operation Chapter
6
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