Level Of Each Detection; Dc Bus Voltage Detection Characteristics - Hitachi L100 SERIES Service Manual

5. Level of Each Detection

5-1. DC Bus Voltage Detection Characteristics

Frequency inverter has several detection characteristics for DC bus voltage as followings.
[1] 200V class
DC bus
voltage [Vdc]
400
350
300
250
200
150
100
50
0
Trip
Reset
Display
example of
monitoring output
frequency
Actual DC bus
voltage
Trip
on
Over
voltage
trip
5-1
Trip
on
During Under
Under voltage
voltage trip or
Waiting
for Retry
Over voltage level
395V +- 20V
Under voltage
recovering level
220V +- 10V
Under voltage
level
190V +- 10V