ACQ550-U1 User’s Manual
193
Embedded fieldbus
Loss of communication
The action taken by the ACQ550, if communication is lost, is configured in
. The parameters are 3018
COMM
FAULT
FUNC
and 3019
COMM
FAULT
TIME
Complete parameter descriptions
section on page
describes
these parameters.
No master station on line
If no master station is on line: Neither the
EFB
OK
MESSAGES
nor the errors (5307
EFB
CRC
ERRORS
and 5308
EFB
UART
ERRORS
) increase on any of the stations.
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
EFB
CRC
ERRORS
or 5308
EFB
UART
ERRORS
advances.
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
EFB
OK
MESSAGES
does not advance.
•
The values of 5307
EFB
CRC
ERRORS
and 5308
EFB
UART
ERRORS
are advancing.
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 “
SERIAL
1
ERR
”, check for either of the
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
COMM
FAULT
TIME
.
Fault 31 – EFB1
For BACnet: If the drive’s control panel shows fault code 31 “
EFB
1”, the drive has an
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.
Summary of Contents for ACQ550-U1-011A-6
Page 1: ...ACQ550 User s Manual ACQ550 U1 Drives 1 200 hp ...
Page 4: ......
Page 10: ...10 ACS550 U1 User s Manual Table of contents ...
Page 42: ...42 ACQ550 U1 User s Manual Start up control with I O and ID Run ...
Page 56: ...56 ACQ550 U1 User s Manual Control panel ...
Page 68: ...68 ACQ550 U1 User s Manual Application macros ...
Page 250: ...250 ACQ550 U1 User s Manual Fieldbus adapter ...
Page 266: ...266 ACQ550 U1 User s Manual Maintenance ...
Page 314: ...314 ACQ550 U1 User s Manual Index ...