Omron RX2 Series User Manual page 455

(Ex.6) When [bb-21] ≠00 and [bb-24] = 04, it restarts by picking up frequency, and then after decelera-
tion according to the setting, the motor trips when stopped.
Power Supply
P-N Voltage
Inverter
Output
Motor Speed
Output signal
[AL]
Restart Power Interruption
When the power supply shows the voltage falling short of the undervoltage level, you can select either
tripping ([bb-20] = 00) by recovering the power supply or retrying restarting ([bb-20] ≠ 00).
If the input power supply to the inverter is input separately to main power supply (R, S, T) and control
power supply (R0, T0), the instantaneous power failure is detected based on how much the power to
the main power supply (R, S, T) drops.
When [bb-27] = 00, you can avoid instantaneous power failure error before the control power supply is
turned off for saving energy while the inverter output is being stopped.
When [bb-27] = 02, you can avoid instantaneous power failure error caused by power shutdown during
deceleration and stop.
Precautions for Correct Use
• The judgement of instantaneous power failure of the inverter is based on the detection of
voltage drop in the main power supply (R, S, T).
• Depending on the fluctuation rate of the main power supply (R, S, T), errors other than
instantaneous power failure may occur.
• If the input power supply to the inverter is input to the control power supply (R0, T0) via main
power supply (R, S, T), undervoltage tripping or undervoltage retry may be triggered first
depending on the operating situation.
• When the power supplied to the control power supply (R0, T0) is shut off, the power will be
lost as quick as in about 80 ms. In this case, it will be a power shutdown.
High-function General-purpose Inverter RX2 Series User's Manual
UV Level
Free Running
UV error occurs
Retry Standby Time
8 Applied Settings
8 - 55
8