Tecnetics Industries Tecweigh 20, Руководство по эксплуатации

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9.01 Status Messages
Every time the WP20 is powered up it immediately performs two functions.
The first function is a scan to determine if an optional plug-in field-bus communications
interface card is installed. The following message will be displayed:
“SCANNING FOR BUSCARD”
The second function is a test of the RAM memory “chip”, and then the flash memory “chip” that
stores the backup “flash” Parameters. The word “chip” is a commonly used substitute word for
I ntegrated C ircuit (IC). RAM stands for R andom A ccess M emory, which is a type of memory
that will loose its information when unpowered. Flash memory is a type of memory that will
retain its information when unpowered. These tests are performed to assure that no information
has been “scrambled”, lost, or corrupted. When the tests are complete, one of the following
messages will appear in the MODE window:
“SELF TEST – PASS”
The memory is OK. No changes have occurred.
“RAM BAD, FLASH RESTORE”
The RAM memory is corrupt. The WP20 has restored the
Parameter Table from flash memory.
“RAM/FLASH BAD, DEFAULTS”
Both the RAM and flash memory are corrupt. The WP20
has restored the Parameter Table from the default
memory. (User determined Parameters will need to be re-
entered. Refer to Sections 6 and 11).
The MODE window can display many different messages that either indicate a potential problem
or convey status information. Some of them have already been discussed as needed throughout
this manual. The following discussion expands on some of those messages and also includes
messages that have not yet been discussed. The following discussion assumes that how to
navigate through the menus and KEYPAD use is understood. Refer to Section 5 if not.
“AUTO ZERO ERROR”
or
“AUTO SPAN ERROR”
The AUTO ZERO and AUTO SPAN error messages indicate an abnormal condition during
calibration. Press the RESET button to clear the message and perform another AUTO ZERO.
After a successful AUTO ZERO has been done, do another AUTO SPAN.
Possible causes of the message:
•
Rocks (or material) were jammed under the weigh idler.
•
The cal weight was lowered for an AUTO ZERO, when it should have been raised.
•
The cal weight was raised for an AUTO SPAN, when it should have been lowered.
•
The conveyor had material running on it during calibration.
•
The load cell(s) or LVDT(s) are damaged.
•
The belt skirting was touching the weigh idler or the belt near the scale.
•
The Parameters for Weigh Span, Cal Weight, etc. are incorrect.
•
The Load Count Parameter does not increase when the calibration weight is lowered.
CHAPTER 9 – TROUBLESHOOTING