Hitachi WJ C1 Series

Chapter 9 Inverter Functions
9-9-16
■ Decelerate and stop with frequency matching and then trip ([b008] = 03)
 Detection of overcurrent or overvoltage shuts off the inverter output, and the motor runs free.
The inverter performs an active frequency matching restart at the frequency of the previous
output interruption after the retry wait time set in [b011], then decelerates the motor to stop
and outputs an "Alarm [AL]".
 For details, refer to "9.7.3 Starting with Frequency Matching".
■ Active frequency matching restart ([b008] = 04)
 Detection of overcurrent or overvoltage shuts off the inverter output, and the motor runs free.
The inverter then performs an active frequency matching restart after the retry wait time set in
[b011]. At this time, no "Alarm [AL]" is output.
 For details on active frequency matching restart, refer to "9.7.4 Starting with Active Frequency
Matching".
Free running
Inverter output
[AL] Output
Retry wait time
Motor speed
Active frequency matching restart
The motor decelerates to stop after
active frequency matching is
performed, and "Overcurrent error
[E01] to [E04]" or "Overvoltage error
[E07]" occurs.
P-N voltage
Output current
Overcurrent
detection level
Overvoltage
detection level
Overcurrent detection
Overvoltage detection
Free running
Inverter output
Retry wait time
Motor speed
Active frequency matching restart
P-N voltage
Output current
Overcurrent
detection level
Overvoltage
detection level
Overcurrent detection
Overvoltage detection