Monitoring Trip Events, History, & Conditions - Hitachi SJ100 Series Instruction Manual

Monitoring Trip Events, History, & Conditions
Inverter Fault Detection
The microprocessor in the inverter detects a variety
of fault conditions and latches the event, recording
it in a history table. The inverter output turns off, or
"trips" similar to the way a circuit breaker trips due
to an over-current condition. Most faults occur
when the motor is running (refer to the diagram to
the right). However, the inverter could have an
internal fault and trip in Stop Mode. In either case,
you can clear the fault by pressing the Stop/Reset key.
We recommend that you first find the cause of the fault before clearing it. When a fault
occurs, the inverter stores important performance data at the moment of the fault. To
access the data, use the monitor functions (Dxx) and select D08 for details about the
n
present fault (E
D09 Trip History function. A listing of error codes is on the next page.
Monitor Menu
Error
exists?
Yes
E 9 0
FUNC.
1 0 0
FUNC.
0 5 2
FUNC.
1 8 8 9
FUNC.
_ _
), or the error code for the past two trip events (E
2
2
1
D 08
FUNC.
Current Trip
No
Conditions
Error Code
Output frequency
at trip point
Motor current
at trip point
DC bus voltage
at trip point
_
No error
FUNC.
SJ100 Inverter
STOP STOP STOP STOP
RESET
Run
Fault
n-1
1
D 01
2
D 09
FUNC.
Trip History
(n-1) No
Error
exists?
Yes
Previous
E 3 0
error #1
FUNC.
(n-2) No
Error
exists?
Yes
Previous
E 5 0
error #2
FUNC.
6–5
Stop
RUN RUN
RUN RUN
STOP STOP STOP STOP
RESET
Trip
Fault
n-2
and E ) using the
2
No
history
_ _ _
FUNC.
No
history
_ _ _
FUNC.