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ENGLISH
Appendix
11
Troubleshooting and Fault Elimination
11.1
Faults
Status
Cause
Remedy
f.ntf
Module to Drive communication
time out
Connection between drive and
module is not made.
Check cable and connection
between module and drive
F
.
nF1
Network Time-out Fault
Drive under NETWORK control
and network communications have
been lost.
See parameters P425, P426
11.2
Troubleshooting
Symptom
Possible Cause
Remedy
No communication from the
drive
Module is not initialized properly
• Verify the module connection
• Check P400 and P402
Incorrect Modbus settings
• Use P403 to reset Modbus parameters.
• Verify P410 and P411, P412
Improper wiring
• Check wiring between the Modbus Network
and communication module.
• Ensure that terminal block is properly seated.
• Check connection between module and drive.
Modbus write commands are
ignored or return exceptions.
“Network Enabled terminal is either
open or not configured.
Configure one of the input terminals (P121,
P122, or P123) to “Network Enabled” function
(selection 9) and close the corresponding
contact.
Drive stops without obvious
reason
Modbus message monitoring
time-out occurred. The timeout
reaction is set to STOP, Quick stop
or Inhibit..
Modify the setting of time-out time (P425) or the
reaction to the time-out (P426).
