Monitoring Trip Events, History, & Conditions - Hitachi L100 Instruction Manual

Monitoring Trip Events, History, & Conditions
Inverter Fault Detection
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Technologies Inc.
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 ), or the error code for the past two trip events (E
D09 Trip History function. A listing of error codes is on the next page.
Monitor Menu
2
D
FUNC.
Current Trip
Error
No
Conditions
exists?
Yes
Error Code
E 9 0
FUNC.
Output frequency
1 0 0
at trip point
FUNC.
Motor current
0 5 2
at trip point
FUNC.
DC bus voltage
1 8 8 9
at trip point
FUNC.
_ _ _
No error
FUNC.
Fault
2
1
D 01
1
08
(n-1)
Error
exists?
Yes
E 3 0
FUNC.
(n-2)
Error
exists?
Yes
E 5 0
FUNC.
L100 Inverter
STOP STOP STOP STOP
RESET
Run Stop
RUN RUN RUN RUN
STOP STOP STOP STOP
RESET
Trip
n-1 n-2
and E ) using the
2 2
D 09
FUNC.
Trip History
No
No
history
Previous
_ _ _
error #1
FUNC.
No
No
history
Previous
_ _ _
error #2
FUNC.
6–5
Fault