Mitsubishi Electric 800 Series Instruction Manual page 31

 Brake sequence fault
Operation panel
indication
The inverter output is shut off when a sequence error occurs during use of the brake sequence function (Pr.278
Description
to Pr.283). This protective function is not available in the initial status. (The brake sequence function is invalid.)
Check point Find the cause of the fault occurrence.
Corrective action Check the set parameters and perform wiring properly.
Reference FR-E800 Instruction Manual (Function)
 Ethernet communication fault
Operation panel
indication
• Appears when Ethernet communication is interrupted by physical factors while Pr.1431 Ethernet signal loss
detection function selection = "3" or Pr.1457 Extended setting for Ethernet signal loss detection
function selection = "3".
• The inverter output is shut off if Ethernet communication is broken for the time set in Pr.1432 Ethernet
communication check time interval or longer for all devices with IP addresses in the range specified for
Ethernet command source selection (Pr.1449 to Pr.1454).
• Check that the Pr.1432 setting is not too short.
• When the CC-Link IE Field Network Basic is used, the inverter output is shut off in the following cases: the data
Description
addressed to the own station is not received for the predetermined timeout period or longer, or the status bit of
the cyclic transmission addressed to the own station turns OFF (when the master inverter 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 User's Manual of the master device which supports the
CC-Link IE Field Network Basic.)
• When BACnet/IP is used, the inverter output will be shut off after the time period set in Pr.1432 after power is
supplied to the inverter if an IP address of any other inverter falls within the Ethernet IP address range set for
command source selection.
• 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
Check point 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.
• When BACnet/IP is used, check that IP addresses of other inverters are not included in the Ethernet IP address
range set for command source selection.
• Check that the Ethernet cable is connected to the Ethernet connector properly and the Ethernet cable is not
damaged.
• 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
Corrective action 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.
• When BACnet/IP is used, do not include IP addresses of other inverters in the Ethernet IP address range set
for command source selection.
• FR-E800 Instruction Manual (Function)
Reference
• FR-E800 Instruction Manual (Communication)
 Board combination fault
Operation panel
indication
Description The board combination is not appropriate.
Check point Check that the board is connected to the inverter.
• Connect the board to the inverter.
Corrective action
• Contact your sales representative.
E.MB4 to 7
E.EHR
E.CMB
to
2. Protective Functions
2.5 Causes and corrective actions
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