Causes and corrective actions
75
3
3
PROTECTIVE FUNCTIONS
3.1
Causes and corrective actions
Warning
Output is not shut off when a protective function is activated.
Fault
When a protective function is activated, the inverter trips and a fault signal is output.
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.)
Operation panel
indication
EHR
FR-LU08
indication
Fault
Name
Ethernet communication fault
Description
Appears when Ethernet communication is interrupted by physical factors while
Pr.1431 Ethernet signal loss
detection function selection
= "1 or 2".
Check point
• Check that the Ethernet board is installed onto the connector securely.
• Check for a break in the Ethernet cable.
Corrective action
• Connect the Ethernet board securely.
• Check that the Ethernet cable is correctly connected to the Ethernet connector. Check that the Ethernet
cable is not broken.
Operation panel
indication
E.EHR
FR-LU08
indication
Fault
Name
Ethernet communication fault (Data code: 231 (HE7))
Description
• Appears when Ethernet communication is interrupted by physical factors while
Pr.1431 Ethernet signal
loss detection function selection
= "3".
• The inverter trips when Ethernet communication is cut off for the time set in
Pr.1432 Ethernet
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
).
• Stops the inverter output when excessive noise occurs around the inverter.
• When the CC-Link IE Field Network Basic is used, the inverter output is shut off when the data addressed to
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.)
Check point
• 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.
• When the CC-Link IE Field Network Basic is used, check that the timeout period set in the master is not
shorter than the period during which the inverter does not receive the data addressed to the own station.
• When the CC-Link IE Field Network Basic is used, check that the status bit of the cyclic transmission
addressed to the own station is not OFF.
Corrective action
• Connect the Ethernet board securely.
• Check that the Ethernet cable is correctly connected to the Ethernet connector. Check that the Ethernet
cable is not broken.
• Set a larger value in
Pr.1432
.
• When excessive noise occurs around the inverter, change the communication setting of the master. (The
noise may be reduced by setting a shorter timeout period or increasing the number of retries in the
communication setting of the master.)
• When the CC-Link IE Field Network Basic is used, set a timeout period longer than the period during which
the inverter does not receive the data addressed to the own station.
• When the CC-Link IE Field Network Basic is used, turn ON the status bit of the cyclic transmission
addressed to the own station.
