ABB ACQ550-x1-06A6-2 User Manual page 193

ACQ550-U1 User's Manual
Loss of communication
The action taken by the ACQ550, if communication is lost, is configured in
Communication
FAULT TIME
these parameters.
No master station on line
If no master station is on line: Neither the
CRC ERRORS
To correct:
• Check that a network master is connected and properly programmed on the
network.
• Verify that the cable is connected, and is not cut or short circuited.
Duplicate stations
If two or more stations have duplicate numbers:
• Two or more drives cannot be addressed.
• Every time there is a read or write to one particular station, the value for 5307
CRC ERRORS
To correct: Check all station numbers and edit conflicting values.
Swapped wires
If the communication wires are swapped (terminal A on one drive is connected to
terminal B on another):
• The value of 5306
• The values of 5307
To correct: Check that the EIA-485 lines are not swapped.
Fault 28 – Serial 1 Err
If the drive's control panel shows fault code 28 "
following:
• The master system is down. To correct, resolve problem with master system.
• The communication connection is bad. To correct, check communication
connection at the drive.
• The time-out selection for the drive is too short for the given installation. The
master is not polling the drive within the specified time-out delay. To correct,
increase the time set by parameter 3019
Fault 31 – EFB1
For BACnet: If the drive's control panel shows fault code 31 "
invalid Device Object Instance ID. To correct, use parameters 5311 and 5317 and
establish a unique drive ID that is in the range 1 to 4,194,303.
fault. The parameters are 3018
. The Complete parameter descriptions
and 5308
EFB UART ERRORS
or 5308
EFB UART ERRORS
EFB OK MESSAGES
EFB CRC ERRORS
COMM FAULT FUNC
section on page
nor the errors (5307
EFB OK MESSAGES
) increase on any of the stations.
advances.
does not advance.
and 5308
EFB UART ERRORS
1 ", check for either of the
SERIAL ERR
.
COMM FAULT TIME
EFB
193
and 3019
COMM
83 describes
EFB
EFB
are advancing.
1", the drive has an
Embedded fieldbus