Mitsubishi Electric FR-F720-55K Instruction Manual page 39

(2) Inverter operation at communication error occurrence
If a communication line error or an error of the option unit itself occurs when the FR-A7NF is mounted,
the inverter operates in the same manner as when Pr. 502 Stop mode selection at communication error =
"1" regardless of setting value of Pr. 502.
Operation at error occurrence
Error Definition
Communication line
Communication option itself
Operation at error removal
Error Definition
Communication line
Communication option itself
CAUTION
• A communication line error [E.OP1 (fault data: HA1), E.OP2 (fault data:HA2), E.OP3 (fault data: HA3)] is an
error that occurs on the communication line, and an error of the communication option unit itself [E. 1 (fault
data: HF1), E. 2 (fault data:HF2), E. 3 (fault data: HF3)] is a communication circuit error in the option.
• The fault output indicates fault output signal (terminal ABC1) or fault bit output.
• When the setting was made to provide a fault output, the fault record is stored into the faults history. (The
fault record is written to the faults history when a fault output is provided.)
When no fault output is provided, the error record overwrites the fault indication of the faults history
temporarily, but is not stored.
After the error is removed, the fault record is reset and returns to the ordinary monitor, and the faults
history returns to the preceding fault indication.
• The deceleration time is the ordinary deceleration time setting (e.g. Pr. 8, Pr. 44, Pr. 45).
Operation
E.OP1, E.OP2 or E.OP3 lit after
Decelerated to stop
Decelerated to stop E.1, E.2 or E.3 lit after stop
Operation
Kept stopped E.OP1, E.OP2 or E.OP3 kept lit
Kept stopped
INVERTER SETTING
Indication
stop
Indication
E.1, E.2 or E.3 kept lit
Fault Output
Provided after stop
Provided after stop
Fault Output
Kept provided
4
Kept provided
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