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PARAMETERS

4.2.23 Automatic restart after instantaneous power failure

(Pr. 57, Pr. 58, Pr. 162, Pr. 165, Pr. 611)

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"

Pr. 611 "restart acceleration time"

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 automatic restart operation is set to be enabled, restart after instantaneous power

failure is performed without outputting alarm output signals, E.UVT (under voltage protection) and E.IPF

(instantaneous power failure protection), at occurrence of an instantaneous power failure.

Parameter

Number

Factory

Setting

Setting Range

Remarks

9999

0, 0.1 to 5 s, 9999

9999: No restart

1.0 s

0 to 60 s

162

0 s

0, 1

0: Frequency

1: No frequency

163

0 s

0 to 20 s

164

0 to 100%

165

150%

0 to 200%

611

5.0s

0 to 3600s, 9999

STF

NFB

MC1

MC2

MC3

Connect CS-SD for use of only
automatic restart after instantaneous
power failure.

MC switching sequence

Instantaneous power failure time

ower supply (R, S, T)

Motor speed
N (r/min)

Inverter output
frequency
f (Hz)

Inverter output
voltage
E (V)

Coasting
time

speed
detection time

Pr. 57 setting

When Pr. 162=0 (with frequency search)

Coasting time

Pr. 57 setting.

Cushion voltage time
Pr. 58 setting

When Pr. 162=1 (without frequency search)

Instantaneous power failure time

Motor speed
N (r/min)

Inverter output
frequency
f (Hz)

Inverter output
voltage
E (V)

Power supply (R, S, T)

Cushion voltage time (value set in Pr. 58)

Restart acceleration time. ( Pr. 611 setting)