Danfoss Turbocor TTS Series, Руководство по обслуживанию

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M-SV-001-EN Rev. G
• Ensure there are no faults present; the shaft will not levitate for validation if a fault is present.
• Ensure the RS485 at J1 on the I/O board is disconnected from external communication; if
the chiller controller automatically sets the control mode, it will stop the calibration process
prematurely.
• Ensure Interlock is open
5.3.3 After Calibration is Complete
The message “Calibration Complete” appears when all SMT calibration steps are complete, regardless
of the results. There will be three options available after the calibration has completed.
• Validate
• Save to EEPROM (If the Save to RAM & EEPROM radio button is selected on the Connection
Manager Window )
• Create Report
Each of these are described in separate sections below.
5.3.3.1 Validate
By validating the calibration, you are levitating the shaft using the current stored calibration data. If
you validate before Saving to EEPROM, the latest calibration data has no impact on the shaft position.
A bearing calibration is not required to have been performed in order to validate (levitate) the shaft.
Using the validation process in this manner will allow the technician to know if the shaft can levitate
freely using the current stored calibration data.
5.3.3.2 Save to EEPROM
When saving to the EEPROM, the “latest” calibration values overwrite “stored” values.
There is no requirement to save calibrations to EEPROM after performing a bearing calibration.
Comparing original factory calibration values stored in EEPROM to the latest calibration allows
determination of long-term changes.
Saving to EEPROM permanently overwrites existing stored calibration values. “Stored” values are used
for startup check at the next power cycle. The previous values cannot be recovered once the new
values are saved to EEPROM.
Original calibration values should only be overwritten when replacing a BMCC in the field, or when
required for troubleshooting a bearing issue with a compressor.
5.3.4 Create a Calibration Report
The calibration report compares current bearing calibration values to stored values. There is no
requirement to perform a bearing calibration before creating a calibration report. There is also no
requirement for saving a bearing calibration (if performed) to EEPROM before creating a calibration
report.
Perform the following steps to create a report:
1. Click the Calibration Report button.
2. Select a location to save the report. The report will be generated as a Portable Document
Format (PDF) document.
NOTE
If the latest calibration values differ from the stored values outside of the tolerances set in the SMT, a warning message will appear
when saving to the EEPROM.
This compares changes from the stored calibration to the latest and may be an indicator of shaft/bearing alignment changes over
time.