Monitoring Trip Events, History, & Conditions - Hitachi SJ7002 Series Instruction Manual

Monitoring Trip Events, History, & Conditions
Fault Detection
and Clearing
Error Status
Codes
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The microprocessor in the inverter detects a
variety of fault conditions and captures 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. Additionally, you can clear the
inverter's cumulative trip history by performing the procedure
Settings" on page 6–16 (setting B_84=00 will clear the trip history but leave inverter settings
intact).
The conditions at the time of an error provide important clues to help you understand the cause.
The SJ700 inverter displays a "status at trip point" digit to the right of the decimal point for
2
some error codes. For example,
condition # "2" when the error occurred.
Status
Inverter Status
Codes
---.0
Reset
---. 1
Stop
---.2
Deceleration
---.3
Constant speed
---.4
Acceleration
Run
Fault
E07.2
means Error 7 occurred and the inverter status was
Status
Codes
---.5
---.6
---.7
---.8
---.9
SJ700 Inverter
2
STOP
RESET
Stop
RUN
STOP
RESET
Trip
Fault
"Restoring Factory Default
Inverter Status
Run Command active with 0 Hz
speed reference
Starting
DC braking
Overload restriction
SON or FOC operation in
progress
6–5