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ACQ550-U1 User’s Manual
Embedded fieldbus
Faults 31…33 – EFB1…EFB3
Except as noted above, these three EFB fault codes (listed for the drive in
on page
, fault codes 31…33) are not used.
Intermittent off-line occurrences
The problems described above are the most common problems encountered with
ACQ550 serial communication. Intermittent problems might also be caused by:
•
Marginally loose connections,
•
Wear on wires caused by equipment vibrations,
•
Insufficient grounding and shielding on both the devices and on the
communication cables.
•
Two conductor wire (plus shield) is in use instead of the recommended three
conductor wire (plus shield), see page
.
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