Mitsubishi Electric 800 Series Instruction Manual page 94

5
PROTECTIVE FUNCTIONS
Operation panel
E.CTE
indication
Name RS-485 terminals power supply short circuit
When the power supply for the RS-485 terminals are short circuited, this function shuts off the power output.
Description
At this time, communication from the RS-485 terminals cannot be made. To reset, use
enter the RES signal, or switch power OFF then ON again.
Check point
Check that the RS-485 terminals are connected correctly.
Corrective action
Check the connection of the RS-485 terminals.
Operation panel
E.SER
indication
Name
Communication fault (inverter)
The inverter trips when communication error occurs consecutively for the permissible number of retries or more when
Pr.335 RS-485 communication retry count ≠ "9999" during RS-485 communication from the RS-485 terminals. The
Description
inverter also trips if communication is broken for the period of time set in Pr.336 RS-485 communication check time
interval.
Check point
Check the RS-485 terminal wiring.
Corrective action Perform wiring of the RS-485 terminals properly.
FR-LU08
FR-LU08 VFD Comm error
PROTECTIVE FUNCTIONS
Circuit fault
of the operation panel,
93
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