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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-4 Detailed Functions (Group b)
7
• If this function is activated, the inverter will force the motor to stop even when the RUN command
input is ON.
To restart the inverter, make sure that the power is recovered and then input the RUN command
again.
• If the inverter stops operating due to an undervoltage when the deceleration stop on power
interruption function is used to execute a deceleration stop, set the Proportional Gain on Power
Interruption (b055) to a large value and the Integral Time on Power Interruption (b056) to a small
value.
• Setting the Proportional Gain on Power Interruption (b055) value too large, or setting the Integral
Time on Power Interruption (b056) value too small, may cause the deceleration time to fluctuate
widely, which may result in trip.
If this occurs, adjust by first increasing the value set in b056 and then decreasing the value set in
b055.
• The Starting Voltage on Power Interruption (b051) and the Deceleration Hold Level on Power
Interruption (b052) must be set to the undervoltage detection level (200-V class: 210 V, 400-V
class: 410 V) or higher. This function will be disabled if these parameter settings are lower
than the undervoltage detection level.
• To ensure that this function operates in a stable manner, set these parameters as follows:
Starting Voltage on Power Interruption (b051) < Deceleration Hold Level on Power Interruption
(b052)
(Example 1)
Main circuit P-N voltage
Vpn [V]
Time
Time
Output
frequency
[Hz]
DC voltage kept constant
b050=02, 03 (Deceleration stop)
Power recovery
Main circuit DC voltage
b052
b051
Power recovery
Main circuit P-N voltage
Vpn [V]
Time
Time
Output
frequency
[Hz]
DC voltage kept constant
b050=03 (Operation)
b050=02 (Deceleration stop)
Power recovery
Main circuit DC voltage
b052
b051
(Example 2)
Power recovery
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