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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
• Below is the timing charts for different cases when the Power Interruption/Undervoltage Restart
Selection (b001) is set to 02.
Note, however, that, regardless of the parameter setting, the inverter will be in the initial power ON
state if the internal DC power is completely discharged.
t0: Power interruption time
t1: Allowable Power Interruption Time (b002)
t2: Restart Standby Time (b003)
Power
supply
Inverter
output
Motor rpm
Free running
Trip
t0
t2
t1
Power
supply
Inverter
output
Motor rpm
Free running
t0
t1
(Example 1)
Duration of power interruption < Allowable Power Interruption Time (b002)
(Example 2)
Duration of power interruption > Allowable Power Interruption Time (b002)
(Example 3)
Motor frequency (rpm) > Frequency Matching Lower Limit Frequency (b007)
Power
supply
Inverter
output
Motor
frequency
(rpm)
Free running
t0 t2
Power
supply
Inverter
output
(Example 4)
Motor frequency (rpm) < Frequency Matching Lower Limit Frequency (b007)
Free running
t0 t2
b007
Frequency
matching start
Motor
frequency
(rpm)
0 Hz start
b007
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