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Inverter over temperature
21
O.htI
based on thermal model
Power stage over tempera-
22
O.htP
ture
23
rES
Spare
Motor thermistor
24
th
over-temperature
25
thS
Motor thermistor short circuit
26
O.Ld1
Digital output overload
27
Oh.dc
DC bus over temperature
28
cL.A1
Analog input 1 current loss1
29
rES
Spare
30
SCL
Control word watchdog has
timed out
Default parameters have
31
EEF
been loaded
32
Ph.Lo
Supply phase loss
Indice de revisión : E - Julio de 2017
An IGBT junction over-temperature has been
detected based on a software thermal model
• Increase acceleration / deceleration rates
• Reduce motor load
• Check DC bus ripple
• Ensure all three input phases are present and bal-
anced
• Check enclosure / drive fans are still functioning
correctly
• Force the heatsink fans to run at maximum speed
• Check enclosure ventilation paths
• Check enclosure door filters
• Increase ventilation
• Reduce the drive switching frequency
• Reduce duty cycle
• Increase acceleration / deceleration rates
• Reduce motor load
The total current drawn from 24 V user supply or
from the digital output has exceeded the limit (
Maximum output current from one digital output is
100 mA.)
• Check total loads on digital outputs
• Check control wiring is correct
• Check output wiring is undamaged
A DC bus component over temperature based on
a software thermal model.
• Check the AC supply voltage balance and levels
• Check DC bus ripple level
• Reduce duty cycle
• Reduce motor load
• Check the output current stability. If unstable;
Check the motor map settings with motor name-
plate
The cL.A1 trip indicates that a current loss was
detected in current mode on Analog input 1 (Ter-
minal 2).
Default parameters have been loaded
• Default the drive and perform a reset
• Allow sufficient time to perform a save before the
supply to the drive is removed
• If the trip persists - return drive to supplier
• Check the AC supply voltage balance and level
at full load
• Check the DC bus ripple level with an isolated
oscilloscope
• Check the output current stability
• Reduce the duty cycle
• Reduce the motor load
42
6424
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