Optidrive E3 Advanced Technical Manual Issue 05.Docx
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2
. Opt
id
rive
E3
Par
amet
er
Set Ov
er
vi
ew
The confirmation message will
appear to show the user
defaults are now cleared, and
resetting the drive will return it
to Invertek Drives Factory
default settings.
2.7.3
Automatic Switching Frequency Reduction
2.7.3.1
Heatsink Temperature Based Effective Switching Frequency Reduction
When the drive heatsink temperature exceeds preset threshold values, the output Effective Switching Frequency is automatically reduced
below the value selected in P-17 to reduce the risk of over temperature trip. The threshold levels are shown in section 7.1 Thermal
Management on page 46.
2.7.3.2
Output Frequency based Effective Switching Frequency Reduction
At low output frequency, Effective Switching Frequency is automatically reduced. Hysteresis is applied to prevent continuous switching. The
operation is according to the following table:
P-17
32kHz
24kHz
16kHz
12kHz
8kHz
4kHz
Effective Switching Frequency increases
when Output Frequency exceeds
9.0Hz
7.0Hz
5.0Hz
3.0Hz
N/A
N/A
Effective Switching Frequency reduces
when Output Frequency reduces below
7.0Hz
5.0Hz
3.0Hz
1.0Hz
N/A
N/A
2.7.3.3
Output Current Based Effective Switching Frequency Reduction
Effective Switching Frequency is automatically reduced based on motor load current as follows:
All ODE-3-240095-3F4
#
models:
o
If P-17 = 12kHz, 16kHz, 24kHz, Effective switching frequency is reduced to 8kHz when motor current exceeds 10.45A (110%
of the drive rated current). Switching frequency will return to the value set in P-17 when motor current reduces below 7.6A
(80% of drive rated current)
o
If P-17 = 32kHz, Effective switching frequency is reduced to 8kHz when motor current exceeds 10.45A (110% of drive rated
current). Switching frequency changes to 24kHz when motor current reduces below 7.6A (80% of drive rated current).
Switching frequency will return to the value set in P-17 when motor current reduces below 6.7A (70% of drive rated
current)
All other models:
o
Effective switching frequency is reduced to 8kHz when motor current exceeds 140% of the drive rated current. Switching
frequency will return to the value set in P-17 when motor current reduces below 110% of drive rated current.
2.8
LED Display
Optidrive E3 has a built in 6 Digit 7 Segment LED Display. In order to display certain warnings, the following methods are used:-
2.8.1
LED Display Layout
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a b c d e f
