Johnson Controls York AYK550, Руководство пользователя

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YORK, A Johnson Controls Company
%**8 = 9);
• 5308
EFB UART ERRORS
does not advance at all (advances when character format
errors are detected, such as parity or framing errors).
• 5309
EFB
status value varies depending on network traffic.
! %**8
The AYK550 behavior, if communication is lost, was configured earlier in
"Communication Fault". The parameters are 3018
COMM FAULT FUNC
and 3019
COMM
FAULT TIME
. The "Parameter Descriptions" section describes these parameters in
detail.
D !
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.
$8
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: Verify the station numbers of all stations. Change conflicting station
numbers.
7$$& 4
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 RS-485 lines are not swapped.
) 2 = 9
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
.