Danfoss ISD Encoder Box, Руководство по эксплуатации, Страница: 29 / 44

8.5 Troubleshooting
When problems occur in the servo system, they must first be located and properly identified.
The following table lists potential faults on the encoder box, their possible causes, and actions for correcting the faults.
If it is not possible to correct the fault, contact Danfoss Service.
Fault Possible Cause Possible Solution
LED "Power" is off although
24 V power supply is
connected.
•
Cable connected incorrectly.
•
24 V power supply voltage not
present.
•
Check cabling
•
Check 24 V power supply
LED "Run / Err" flashes green for
>1 min. Error during initialisation. Carry out a power cycle.
LED "Run / Err" is lit red
constantly. Active encoder box error. See error codes below.
LED "CAN I" or "CAN II" is off. No CAN messages on the bus.
•
Check cabling
•
Check terminating resistors
LED "CAN I" or "CAN II" is red
(constantly). Current CAN bus problems on line I
or II.
•
Check cabling
•
Check terminating resistors
•
Check parameter General.BitRate
Fault code 5100 (hex) Power supply failure.
•
Check cabling
•
Check 24 V power supply
Fault code 8100 / 8101 (hex) CAN controller error counter reached
limit CAN line I / II.
•
Check CAN cabling and voltage
•
Check terminating resistors
•
Check for EMC interference
•
Check parameter General.BitRate
Fault code 8120 / 8121 (hex) CAN passive error CAN line I / II.
Fault code 8140 / 8141 (hex) Bus off CAN line I / II.
Fault code FF02 (hex) Write to log failed.
•
Ensure the SD card is inserted correctly
•
Check if the file-system on the SD card is corrupt
Fault code FF05 (hex) BiSS encoder is not connected while
start-BiSS command is executed. Check cabling to BiSS encoder
Fault code FF06 (hex) Encoder is counting in reverse.
•
Check cabling to encoder
•
Check direction parameter for the specific encoder type used
•
Check parameter General.WrongDirectionCheck
Fault code FF09 (hex) QEP failed to detect zero pulse.
•
Check cabling to encoder
•
Check parameter QEP.PulsesPerRevolution
Fault code FF0A (hex) Encoder CRC failure.
•
Check cabling to encoder
•
Check for EMC interference
•
Check CRCPoly parameter for the specific encoder type used
Fault code FF0B (hex) Encoder MaxAngleDifference
threshold exceeded.
Check parameter General.MaxAngleDifference in relation to
maximum encoder speed
Fault code FF0F (hex) Incorrect CAN-ID.
•
Check parameters General.DefaultCanId and General.BaseCanId
•
Check the BCD switch setting
Fault code Err1 Under-voltage during power-up. Check 24 V power supply
Fault code Err2 SD card not available.
•
Ensure the SD card is inserted correctly
•
Ensure the SD card contains the parameter file
Table 8.4 Troubleshooting Overview
Faults
VLT
®
ISD Encoder Box Operating Instructions
MG75F102 - VLT
®
is a registered Danfoss trademark 27
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