Lenze SMVector RS-485 LECOM User Manual
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CMVLC401A
Troubleshooting and Fault Elimination
10
Troubleshooting and Fault Elimination
10.1 Faults
Table 11 lists the faults common to the LECOM communications module.
Table 11: Faults
Fault Code Fault
Cause
Remedy
f
Module to Drive
communication time out
Connection between drive and
module is not made.
Check cable and connection
between module and drive
F
1
Network Time-out Fault
Drive under NETWORK control
and network communications
have been lost.
See parameters P425, P426
10.2 Troubleshooting
Table 12 lists some common LECOM communications problems and possible corrective action.
Table 12: Troubleshooting
Symptom
Possible Cause
Remedy
No communication
from the drive
Module is not initialized properly
• Verify the module connection
• Check P400 and P402
Incorrect LECOM settings
• Use P403 to reset LECOM parameters.
• Verify P410 and P411
Improper wiring
• Check wiring between the LECOM Network and
communication module.
• Ensure that terminal block is properly seated.
• Check connection between module and drive.
LECOM write
commands are
ignored or return
exceptions.
“Network Enabled” terminal is either
open or not configured.
Configure one of the input terminals (P121 ... P124)
to “Network Enabled” function (selection 9) and close
the corresponding contact.
Network Control Level set to monitor only
(P420 = 0)
Set P420 = 1, 2, 3 or 4
Drive stops without
obvious reason
LECOM message monitoring time-out
occurred. The timeout reaction is set to
Quick stop or Inhibit.
Modify the setting of time-out time (P425) or the
reaction to the time-out (P426).