99
User’s manual
ALARM DESCRIPTION CORRECTIVE ACTION
A10.0
DC Bus under
minimum
threshold
admitted
Intermediate drive circuit voltage
(DC Bus see d24) has dropped
below the minimum value (P106).
Undervoltage may occur when the mains transformer is not
powerful enough to sustain the loads or when powerful motors
are started up on the same line.
Try to stabilise the line by taking appropriate measures. If
necessary, enable the BUS support function for mains failure
(C34=1). This however can only help motors with light loads.
A10.1
Emergency
bracking on
main supply
lost
With connection C34= 3 was
been select the emergency brake
when main supply is lost. This has
occurred
Try to understand why main supply is lost.
A11.1 HW detection
Intermediate drive circuit voltage
(DC Bus see d24) has exceeded
the maximum analog thresold
value.
The safety switch cuts in mainly due to excessively short
braking times. The best solution is to lengthen the braking
times.
An overvoltage in the mains may also trigger the safety switch.
If the drive is fitted with a braking circuit, check that the
resistance value is not too high to absorb the peak power.
If the resistor is not too hot, check the resistor and connection
continuity and ensure that the circuit functions correctly.
A11.2 SW detection
Intermediate drive circuit voltage
(DC Bus see d24) has exceeded
the maximum value (P107).
A11.3
HW + SW
detection
A11.0 and A11.1 appears
A12.0 Software alarm C29 different from 1 Check and enable connection C29 “Drive software enable”
A12.1
Run whitout
power soft start
RUN without Power Soft start Check why the Power Soft start isn’t enabled
A12.2
Run with
T.radiator too
high
RUN with Trad>P119 Check the radiator temperature (d25)
A12.3
Comunication
problems with
power card
Problems in the communication
with the power card
Please contact TDEMacno assistance
A13.0
Rectifier bridge
problem
The bridge that enables the line
by gradually loading the DC bus
condensers has not managed to
load the intermediate drive circuit
sufficiently within the time set
(P154).
Check the voltage of the three input phases.
Try switching off and then back on, measuring the DC Bus level
(with the monitor or tester).
If the problem repeats, contact TDE as there must be a soft
start circuit malfunction.
A13.1
Safe Torque
Off
Safe Torque Off: +24Vare missing
in connectors S1 and S3. For this
reason it’s enabled certified STOP
function
Bring +24V to connectors S1 and S3.
If the user want to use the Safe Torque Off function without
alarms, it’s necessary to set C73=1.
A14.0
Motor phase
inverted
During autotuning was been
detected that motor phase are not
connected in the same order of
feedback
Swap over two phases and repeat the connection tests.
A14.1
Motor not
connected
During autotuning was been
detected that drive and motor
aren’t connected properly
Check motor phases
A15.0
Wrong number
of
Motor/Sensor
poles
Motor/sensor parameters being
written
Number of motor poles (P67) set incorrectly or more sensor
poles (P68) than motor poles have been set.
A15.1
Simulated
encoder pulses
Simulated Encoder pulses
Number of revolutions per pulse selected (C51) is not
compatible with the maximum speed (P65). See “Feedback
Option” enclosure.
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