Future Design MCTB 4.3, Руководство пользователя

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MCTB
203
12 Alarm Codes and Troubleshooting
This section provides explanations of standard MCTB alarms to help in diagnosing and resolving the alarm
conditions. Note that the information provided here covers standard alarms only, and not alarms configured by
the OEM. If you are unable to diagnose a problem through the use of this guide, contact your OEM for further
assistance.
Some of the troubleshooting procedures may require access to live circuitry. Dangerous
accidental contact with line voltage may be possible. Only qualified service personnel should
be allowed to perform these procedures.
Alarm Monitor Description Explanation/Corrective Action
“
tagname
” A to D converter failure
(error code 40) Indicates that the analog to digital converter in the loop or
limit
control indicated by “
tagname
” has failed. Return to factory for repair or
replace.
If the MCTB is running a ramp/soak program when this alarm occurs, the
program will be terminated if it occurs on either loop 1 or loop 2. If the alarm
occurs on loop 3, the program will continue operation.
Auto tune failed for “
tagname
”.
(error code 26) Indicates that auto tune was unable to execute properly for
the loop control indicated by “
tagname
”. Verify that PB >0 and TI>0 before
starting auto tune. Try manual tuning instead of auto tuning if the process
has a very slow response.
“
tagname
” cold junction failure
(error code 30) Indicates that the cold junction compensation in the loop or
limit
control indicated by “
tagname
” has failed. Return to factory for repair or
replace.
Communications error with “
tagname
”.
Check cable.
Communication error occurred between the MCTB display unit and attached
B42/L41 indicated by
“tagname”.
Verify that the B42/L41 is properly
configured with the correct communication address. Replace B42/L41.
Data file error. SD card full or missing.
Indicates that data logging could not be started or has been stopped due to
an issue in accessing the SD memory card. This will occur if the memory
card does not have any remaining memory space available or the maximum
number of files has been reached in the data log directory. Use the USB file
utilities or FTP to backup (copy) and delete data files from the MCTB in order
to free up memory.
Verify that an SD card is properly inserted into the MCTB. Replace SD card.
“
tagname
” EEPROM failure
(error code 29) Indicates that the memory in the loop or limit control indicated
by “
tagname
” has failed. Return to factory for repair or replace.
Email Error! Check cable or server
down.
Indicates that the MCTB was unable to send an alarm message through the
mail server. Verify that the MCTB is properly connected to the network and
that the email settings and addresses are valid.
This alarm will also occur if the email server limit has been reached for the
number of allowed emails. The hourly/daily limits for allowed email
messages is dependent upon the service provider. If the email limit is
reached, the server will terminate the connection and prevent the MCTB from
sending the email resulting in the alarm.