99
5. PARAMETERS
5.6 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
• When the automatic restart after instantaneous power failure is selected on the inverter side, set
Pr.57 Restart selection
= "0" on the converter unit side.
• When the automatic restart after instantaneous power failure function is selected, the motor driving is resumed at power
restoration after an instantaneous power failure or undervoltage. (E.IPF and E.UVT are not activated.)
• When
Pr.57
= "9999" (initial value), the inverter output is shut off at the activation of the instantaneous power failure
protection (E.IPF or E.UVT) of the converter unit, even when the automatic restart after instantaneous power failure is
selected on the inverter side. (Refer to
for E.IPF or E.UVT.)
• When E.IPF or E.UVT is activated, the Instantaneous power failure/undervoltage (IPF) signal is output.
• The IPF signal is assigned to terminal IPF in the initial status. By setting "2" (positive logic) or "102" (negative logic) in any
parameter from
Pr.190 to Pr.195 (Output terminal function selection)
, the IPF signal can be assigned to another
terminal.
5.6.3
Power failure time deceleration-to-stop function
This is a function to decelerate the motor to a stop when an instantaneous power failure or undervoltage occurs.
Pr.
Name
Initial
value
Setting
range
Description
57
A702
Restart selection
9999
0
The converter restarts operation at the power restoration from instantaneous
power failure.
9999
The converter does not restart operation automatically at the power
restoration from instantaneous power failure.
ON
Power
supply
OFF
15 to 100ms
ON
IPF
OFF
CAUTION
•
When the automatic restart after instantaneous power failure function is selected, the motor suddenly starts
(after reset time passes) when an instantaneous power failure occurs. Stay away from the motor and machinery.
Apply CAUTION stickers (supplied with the inverter) to easily visible places when automatic restart after
instantaneous power failure has been selected.
Pr.
Name
Initial value
Setting range
Description
261
A730
Power failure stop selection
0
0
Power failure time deceleration-to-stop function
disabled
1, 2, 21, 22
Power failure time deceleration-to-stop function
enabled
