Momentary Power Interruption Compensation (N47); Fault Retry (N48) - Omron SYSDRIVE 3G3JV User Manual

Advanced Operation
Set Values
Value
0 The fan rotates only while the RUN command is input and for 1 minute after the Inverter
stops operating.
1 The fan rotates while the Inverter is turned on.
• This parameter is available only if the Inverter incorporates a cooling fan.
• If the operation frequency of the Inverter is low, the life of the fan can be prolonged by setting the pa-
rameter to 0.

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
Setting 0 to 2
range
Set Values
Value
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. If the parameter is set to 1, an undervoltage warning will be detected and the output of the
Inverter will be shut off for 0.5 s when a momentary power interruption occurs. The Inverter will
restart after speed searching if power is restored within 0.5 s. Undervoltage fault 1 will be de-
tected if power failure continues for more than 0.5 s.
Note 2. If the parameter is set to 2, an undervoltage warning will be detected and the output of the
Inverter will be shut off when a momentary power interruption occurs. The Inverter will then
wait for power restoration.
When power is restored, the Inverter will restart after speed searching.

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 operational fault.
Description
Unit of 1
setting
Description
Chapter 6
Changes during No
operation
Default setting 0
6-15