Hitachi WJ C1 Series User Manual

Chapter 9 Inverter Functions
9-9-15
Operations of "Restart mode selection after overvoltage/overcurrent error [b008]"
■ Trip ([b008] = 00)
 Detection of overcurrent or overvoltage shuts off the inverter output, and the motor runs free.
"Overcurrent error [E01] to [E04]" or "Overvoltage error [E07]" occurs and "Alarm [AL]" is output.
■ 0 Hz restart ([b008] = 01)
 Detection of overcurrent or overvoltage shuts off the inverter output, and the motor runs free.
The inverter then restarts from 0 Hz after the retry wait time set in [b011]. At this time, no "Alarm
[AL]" is output.
■ Decelerate and stop with frequency matching and then trip ([b008] = 02)
 Detection of overcurrent or overvoltage shuts off the inverter output, and the motor runs free.
The inverter then performs an Active frequency matching restart at the frequency of the previous
output interruption after the retry wait time set in [b011]. At this time, no "Alarm [AL]" is output.
 For details, refer to "9.7.3 Starting with Frequency Matching".
Free running
Inverter output
Motor speed
[AL] Output
P-N voltage
Output current
Overcurrent
detection level
Overvoltage
detection level
Overcurrent detection
Overvoltage detection
"Overcurrent error [E01] to [E04]" or
"Overvoltage error [E07]" occurs
Free running
Inverter output
Motor speed
Retry wait time
0 Hz restart
P-N voltage
Output current
Overcurrent
detection level
Overvoltage
detection level
Overcurrent detection
Overvoltage detection
Free running
Active frequency matching restart
Inverter output
Motor speed
Retry wait time
P-N voltage
Output current
Overcurrent
detection level
Overvoltage
detection level
Overcurrent detection
Overvoltage detection
A

Hitachi WJ C1 Series Specifications

General

Brand	Hitachi
Model	WJ C1 Series
Category	Inverter
Language	English