Troubleshooting; Inspecting Display On Parameter Unit And Status Led On A5Np - Mitsubishi Electric FR-A5NP Instruction Manual

7. TROUBLESHOOTING

If a fault occurs and the inverter fails to operate properly, locate the cause
of the fault and take proper corrective action by referring to the
troubleshooting below. If the corresponding information is not found in the
table, the inverter has problem, or the component parts are damaged,
contact the nearest service representative.
7.1 Inspecting Display On Parameter Unit And Status
LED On A5NP
Inverter LED on
Display A5NP
0.00 Off
E.XXX Off/On
In response to the occurrence of a fault, the display unit of the inverter
automatically displays the code of the detected fault and the Status LED
on A5NP shows the status of the detected fault.
Possible Causes
FR-A5NP option
module not
functioning
Network integrity
compromised
Network Master does
not exist or is
malfunctioning
Inverter is in fault
mode-check inverter
display
35
Corrective Actions
Check proper installation of option
module. Refer to page 3.
Reset inverter / option module by
cycling power to inverter
Reset inverter to factory default
settings via AllPrClr function and
cycle power to inverter
Verify proper network cable
connection
Check network cable terminations
Verify network configuration using
PROFIBUS-DP network
configuration software tool such as
Mitsubishi MELSEC Profimap
Check for network errors on other
nodes
Verify network cable continuity
between nodes
Verify connection and operation of
PROFIBUS-DP Master
Refer to the Troubleshooting
section in the inverter manual.