Alarms - TDE MACNO MINIOPD EXP User Manual

6 ALARMS

6.1 MAINTENANCE AND CONTROLS
The drive has a range of functions that cut in if there is a fault in order to prevent damage to both the
drive and the motor. If a protection switch cuts in, the drive output is blocked and the motor coasts.
If one or more of the protection switches (alarms) cut in, they are signalled on the displays, which
start to flash and to show a cycle of all the alarms triggered (the 7-segment display shows the alarms
that have been set off in hexadecimal).
Should the drive malfunction or an alarm be triggered, check the possible causes and act
accordingly.
If the causes cannot be traced or if parts are found to be faulty, contact TDE MACNO and provide a
detailed description of the problem and its circumstances.
The alarm indication are divide in 16 categories (A0÷A15) and for each alarm can be present code to
identify better the alarm (AXX.YY)
6.1.1 MALFUNCTIONS WITHOUT AN ALARM: TROUBLESHOOTING
MALFUNCTION
Motor does not run
Motor does not turn
Motor direction inverted
Motor revolutions cannot
be regulated
Irregular motor
acceleration and braking
Number of motor
revolutions too high or
too low
Motor does not turn
smoothly
96
POSSIBLE CAUSES
RUN command not given
Terminals L1, L21 and L3 are not
wired properly or the power
voltage is disabled
Terminals U,V and W are not
wired properly
An alarm has been triggered
Parameters programmed
incorrectly
Wrong Positive direction
Speed reference value inverted
No reference signal
Excessive load
Acceleration – deceleration
time/times is/are too low
Load too high
Rated motor speed, minimum or
maximum speed, offset, or
reference gain value are set
incorrectly
Excessive load
Motor load changes a lot or
displays excessive load points
CORRECTIVE ACTION
Check operating status of input I00
Ensure wiring is correct and check mains and
motor connection
Check any contactors upstream and
downstream of drive are closed
See following paragraph
Check parameter values via the programming
unit and correct any errors
Invert positive speed rotation setting C76=1.
Invert reference value
Check wiring and apply reference signal if not
present
Reduce motor load
Check parameters and change if necessary
Reduce load
Check parameters and compare setting with
motor rating plate
Reduce load
Reduce load points.
Increase motor size or use a larger frequency
drive