Protective Functions; Causes And Corrective Actions - Mitsubishi Electric A800-E Instruction Manual

3

PROTECTIVE FUNCTIONS

3.1

Causes and corrective actions

Warning
Output is not shut off when a protective function is activated.
Operation panel
indication
Name
Ethernet communication fault
Appears when Ethernet communication is interrupted by physical factors while Pr.1431 Ethernet signal loss
Description
detection function selection = "1 or 2".
• Check that the Ethernet board is installed onto the connector securely.
Check point
• Check for a break in the Ethernet cable.
• Connect the Ethernet board securely.
Corrective action
• Check that the Ethernet cable is correctly connected to the Ethernet connector. Check that the Ethernet
Fault
When a protective function is activated, the inverter trips and a fault signal is output.
Operation panel
indication
Name
Ethernet communication fault (Data code: 231 (HE7))
• Appears when Ethernet communication is interrupted by physical factors while Pr.1431 Ethernet signal
• The inverter trips when Ethernet communication is cut off for the time set in Pr.1432 Ethernet
• Stops the inverter output when excessive noise occurs around the inverter.
Description
• When the CC-Link IE Field Network Basic is used, the inverter output is shut off when the data addressed to
• Check that the Ethernet board is installed onto the connector securely.
• Check for a break in the Ethernet cable.
• Check that the Pr.1432 setting is not too short.
• Check for excessive noise around the inverter.
Check point
• When the CC-Link IE Field Network Basic is used, check that the timeout period set in the master is not
• When the CC-Link IE Field Network Basic is used, check that the status bit of the cyclic transmission
• Connect the Ethernet board securely.
• Check that the Ethernet cable is correctly connected to the Ethernet connector. Check that the Ethernet
• Set a larger value in Pr.1432.
• When excessive noise occurs around the inverter, change the communication setting of the master. (The
Corrective action
• When the CC-Link IE Field Network Basic is used, set a timeout period longer than the period during which
• When the CC-Link IE Field Network Basic is used, turn ON the status bit of the cyclic transmission

The data code is used for checking the fault detail via communication or for setting Pr.997 Fault initiation. (Refer to the Instruction Manual
(Detailed) of the FR-A800/FR-F800 inverter.)
EHR
cable is not broken.
E.EHR
loss detection function selection = "3".
communication check time interval or longer between the inverter and all devices with the IP addresses
in the range specified for the Ethernet command source selection (Pr.1449 to Pr.1454).
the own station is not received for the predetermined timeout period or longer, or when the status bit of the
cyclic transmission addressed to the own station turns OFF (when the master controller gives a command to
stop the cyclic transmission). (For the details of the timeout period, status bit of the cyclic transmission, and
command to stop the cyclic transmission, refer to the Instruction Manual of the master controller which
supports the CC-Link IE Field Network Basic.)
shorter than the period during which the inverter does not receive the data addressed to the own station.
addressed to the own station is not OFF.
cable is not broken.
noise may be reduced by setting a shorter timeout period or increasing the number of retries in the
communication setting of the master.)
the inverter does not receive the data addressed to the own station.
addressed to the own station.
Causes and corrective actions
FR-LU08
indication
FR-LU08
indication

PROTECTIVE FUNCTIONS
Fault
Fault
3
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