8 Applied Settings
8 - 68
High-function General-purpose Inverter RX2 Series User’s Manual
Precautions for Correct Use
• Keep the settings for [bA-31] and [bA-32] to the undervoltage recovery level (P-N voltage 180
V (200 V class), 360 V (400 V class)) or higher. The function will not be activated in case of
undervoltage.
• Make setting so that [bA-31] will be lower than [bA-32]. If the difference between the settings
for [bA-31] and [bA-32] is great, setting the proportional gain [bA-37] to be too large may
cause sudden acceleration immediately after this function is activated and may cause over-
current.
• When [bA-30] is 02 or 03, PI control is performed so that the internal DC voltage will be con-
stant.
• Setting the proportional gain [bA-37] to be large will accelerate the response. However, set-
ting it to be too large will dissipate the control, tending to cause tripping.
• Setting the integral gain [bA-38] to be short will accelerate the response. However, setting it
to be too short will also tend to cause tripping.
• If the proportional gain [bA-37] is small, the motor will trip due to undervoltage because the
voltage will drop immediately after the function is activated.
• If you would like to retry even if the power failure may be relatively long, supply the P-N volt-
age to R0 and T0.
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