DFR INFORMATION
DFR’s (Drive Fault Records)
The AC MCB (Motor Control Board) monitors the drive system and reports any anomalies by triggering what is called a DFR (Drive Fault Record) code.
Same Codes, Different Meanings
The AC System has the same codes as the DC system but the meanings may not necessarily be the same, specifically “CHECK SPEED SYSTEM” and “CHECK MOTOR SYSTEM”. You must now take in to account that the MCB may have issued a DFR code which has shut the treadmill down and display one of the “CHECK” codes. In most cases you will find that a DFR code has been flagged and caused the unit to shut down.
How Do You Know What or If a DFR Code Has Been Captured?
There are two ways to check to see if a DFR code has been captured:
1.Check the LAST ERROR LIST in the Maintenance Mode
Engage the Maintenance Mode and access the LAST ERROR LIST
(see “LAST ERROR LIST” in the “MAINTENANCE MODES – TEST MODES” section)
Scroll the parameters until you come to the LAST DFR
There will be an 8 digit number that is the DFR code
Example: LAST DFR(X) 00004000 (over temp on motor or drive).
o Ignore the first set of zero’s before the number. This example will be considered a 4000 code
o If the Last DFR list reads LAST DFR(X)00000000, a DFR has not been recorded by the MCB and reported to the display. Follow the appropriate troubleshooting steps for the code displayed (i.e. ELEVATION STALL, etc.)
2.Count the blinks from the Status led’s on the MCB
When the MCB records a DFR, the three Status led’s (Led 1, Led 2 and Led 3) will blink together simultaneously
The Status led’s will blink the number of times that indicate the particular DFR code
There will be a short pause in the blinking to show counting separation (Count the blinks between the pauses)
Example: Count 15 blinks, pause, 15 blinks again would indicate a 4000 DFR code, which is an “over temp on motor or drive”
*See DFR Code Chart in the “Troubleshooting” section, for blink reference chart.
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