Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации, Страница: 275 / 512

Parameter Operation selection at power failure
FR-D700 SC EC 6 - 125
Automatic restart after instantaneous power failure operation (Pr. 30, Pr. 162, Pr. 299)
●
Without frequency search
When Pr. 162 = "1" (initial value) or "11", automatic restart operation is performed in a
reduced voltage system, where the voltage is gradually risen with the output frequency
unchanged from prior to an instantaneous power failure independently of the coasting speed
of the motor.
The output shut off timing differs according to the load condition.
Fig. 6-68:
Automatic restart without frequency search
(Pr. 162 = 1/11)
I001901E
NOTE This system stores the output frequency and rotation direction prior to an instantaneous
power failure and restart using the stored value. Therefore, if the instantaneous power failure
time exceeds 0.2s and the stored value cannot be retained, the inverter starts at Pr. 13
"Starting frequency" (initial value = 0.5Hz) in the starting direction upon power restoration.
Power
supply
(L1, L2, L3)
Motor
speed
[r/min]
Output
frequency
[Hz]
Output
voltage
[V]
Power failure
Coasting time
Pr. 57 Restart cushion
time Pr. 58