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8 Applied Settings
High-function General-purpose Inverter RX2 Series User’s Manual
8-3 Protective Functions
8
8-3-6 Instantaneous Power Interruption/Undervoltage Detection
Examples of supplying the power to R0 and T0 from R, S, and T
Precautions for Correct Use
• Depending on the setting for [bb-25] Allowable instantaneous power failure time and the
number of retries, the inverter’s behavior varies.
• When “0” is specified for the number of retries (Error occurs)
Power recovery within [bb-25] Allowable instantaneous power failure time
An error occurs.
Power recovery after [bb-25] Allowable instantaneous power failure time has elapsed
An error does not occur. The same operation as when the power is turned on.
• When other than “0” is specified for the number of retries (Retry enabled)
Power recovery within [bb-25] Allowable instantaneous power failure time
Retry operation
Power recovery after [bb-25] Allowable instantaneous power failure time has elapsed
An error occurs.
(Ex.1) [bb-27]=00
Power supply
Operation command [FW]
Inverter output
Output terminal [AL]
Output terminal [IP]
Output terminal [UV]
Inverter is stopped
Power supply
Operation command [FW]
Inverter output
Output terminal [AL]
Output terminal [IP]
Output terminal [UV]
Inverter is running (at rated load)
(Ex.2) [bb-27]=01
Power supply
Operation command [FW]
Inverter output
Output terminal [AL]
Output terminal [IP]
Output terminal [UV]
Inverter is stopped
Power supply
Operation command [FW]
Inverter output
Output terminal [AL]
Output terminal [IP]
Output terminal [UV]
Inverter is running (at rated load)
(Ex.3) [bb-27]=02
Power supply
Operation command [FW]
Inverter output
Output terminal [AL]
Output terminal [IP]
Output terminal [UV]
Inverter is stopped
Power supply
Operation command [FW]
Inverter output
Output terminal [AL]
Output terminal [IP]
Output terminal [UV]
Inverter is running (during
deceleration stop)
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Power supply
is recovered
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Power supply
is recovered
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Power supply
is recovered
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
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