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PARAMETERS
89
4.2.24 Automatic restart after instantaneous power failure
(Pr. 57, Pr. 58, Pr. 162 to Pr. 165)
Pr. 57 "restart coasting time
Pr. 58 "restart cushion time
Pr.162 "Automatic restart after instantaneous power failure selection"
Pr.163 "First cushion time for restart"
Pr.164 "First cushion voltage for restart"
Pr.165 "Restart stall prevention operation level"
#
You can restart the inverter without stopping the motor (with the motor coasting) when the commercial
power supply is switched to the inverter operation or when the power is restored after an instantaneous
power failure. (When restart operation is set to be enabled, an automatic restart after instantaneous power
failure is made without the E.UVT (undervoltage protection) or E.IPF (instantaneous power failure
protection) alarm output signal being output at occurrence of an instantaneous power failure.)
Parameter
Number
Factory
Setting
Setting
Range
Remarks
57 9999
0, 0.1 to
5 s, 9999
9999: No restart
58 1.0 s 0 to 60 s
162 0 0, 1
0: Frequency
search
1: No frequency
search
163 0 s 0 to 20 s
164 0% 0 to 100%
165 120% 0 to 150%
STF
IM
NFB
CS
SD
CS
SD
S1
〈
L
21
〉
R1
〈
L
11
〉
T
〈
L
3
〉
S
〈
L
2
〉
R
〈
L
1
〉
MC1
MC2
MC3
W
V
U
Connect CS-SD for use of only
automatic restart after instantaneous
power failure.
MC switching sequence
Instantaneous power failure time
Power supply
(R, S, T)
Motor speed
N (r/min)
Inverter output
frequency
f (Hz)
[Coasting time] + [speed detection time]
Cushion voltage time (value set in Pr. 58)
Approx. 5s
Pr. 57 setting
Inverter output
voltage
E (V)
When Pr.162 = 0 (with frequency search)
When Pr.162 = 1 (without frequency search)
Instantaneous power failure time
Power supply
(R, S, T)
Motor speed
N (r/min)
Inverter output
frequency
f (Hz)
Inverter output
voltage
E (V)
Coasting time
Cushion voltage time
Pr. 58 setting
Pr. 57 setting
4