—————— TPD32-EV ——————
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8 - TROUBLESHOOTING
Thefollowingdescribespossiblefaultsandtheircauses.
Failure alarms in the keypad display
FAILURE ALARM POSSIBLE CAUSES
Bus loss Failure in the Bus connection (only with interface Bus option card)
• Check the Bus connection
• EMC compatibility problems
• Try a RESET. If you are still unsuccessful: probable internal fault. Contact your sales office.
Brake fault Error in the brake opening or closing sequence after the Brake control has been enabled.
• Refer to chapter 6.14.8 and check that wiring, parameters and sequences of signals are correct.
Delta frequency Excessive difference between the frequency of the three-phase power supply input and the value measured the
instant this is guaranteed.
• Delta freq thres parameter set too low.
• Check that the frequency of the three-phase power supply remains constant or in any case within the
threshold limit throughout drive operation.
Drive I2t ovrld Excessive drive overload.
• Wait until the accumulator (Drive I2t accum) is zeroed before resetting the alarm and then enable the
drive. No data can be configured for this alarm; however, reference should be made to chapter 6.14.6 for
further information about calculating thresholds.
Enable seq err Drive is powered up or Reset with Enable input connected to 24 V (picked up) and the Drive is configured to run
from the terminals. Refer to CONFIGURATION/Main commands.
External fault External failure, reported on terminal 15.
• External failure, reported on terminal 15
• If the “External fault” message is not used: connection missing between terminals 16 and 18 (reference
point) and/or 15 and 19.
• The signal on terminal 15 is missing (15...30V to terminal 16). With external voltage supply: reference
points must be connected with each other!
Failure supply Fault in voltage supply = the voltages are below the permitted value
CAUTION: switch off voltage before removing terminal strips.
• In most cases the cause is in the external wiring. Pull out the plug-in terminal strips of the regulator card
and enter the Reset command. If no other failures are reported, check your wiring for a short-circuit, in
some cases with the cable shielding.
• If this has not rectified the fault: remove the terminal strips of the I/O option card (if present) and try
RESET once more.
• If you are still unsuccessful: probably an internal fault. Contact your sales office
Field loss Too low field current
• The field regulation is blocked
• The conductors in the field circuit are interrupted
• Field fuses are active
Heatsink Heatsink temperature too high
• Ambient temperature too high
• Failure of device fan [with devices > 88 A (American), 110 A (Standard)]
• Dirty heatsink.
Hw opt1 failure Failure on the option card 1
• Try a RESET. If you are still unsuccessful: probable internal fault. Contact your sales office.
Motor I2t ovrld Excessive motor overload.
• Refer to chapters 6.14.6 and 6.11.7 (Motor I2t ovrld alarm) and check the exactness of the data that
have been entered. If these are correct, wait until the accumulator (Motor I2t accum) is zeroed before
resetting the alarm and then enable the drive.
Opt2 failure Failure on the option card 2
• Try a RESET. If you are still unsuccessful: probable internal fault. Contact your sales office.
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