Overtemperature Heatsink (Oh) - KEB COMBIVERT F6 Programming Manual

Protection functions

Overtemperature heatsink (OH)

NOTICE
Depending on the device size, there are only one or more heat sink temperature
values. If an inverter does not support heat sink temperatures 2 or 3, "5000: tem-
perature measurement not supported" is displayed.
Each supported heat sink temperature has its own overtemperature level and its
own error code.
Index Sub Id-
-Idx Text
0
1
0x2C19 2 ru25
3
4
0x2A06 0 pn06
0x2A07 0 pn07
0x2A08 0 pn08
0x2A51 0 pn81
0x2C02 0 ru02
0x2A1C 0 pn28
The drive switches off automatically on reaching an unit-dependent maximum heat
sink temperature. The error reaction can be programmed as described above via
the object
REACTION ACTIVE).
The length of time required to shutdown the drive depends on many factors: e.g.
the duration of the deceleration ramp and settings in brake handling
control closing delay
The maximum time between occurence overtemperature and switch-off modulation
is 2 seconds.
If the time exceeds 2 seconds and the overtemperature error is still present, it will
be switched off with error message 110: ERROR time OH.
If these 2 seconds are too small to ensure a meaningful completion of the machine
cycle, a warning level
62
the inverter is not a temperature measuring device!
➢ The detection of the temperature only serves to protect the inverter
and is, depending on the device type and the current measuring
point, subject to varying degrees of tolerance and error.
Name
heatsink temperature
values
heatsink temperature 1
heatsink temperature 2
heatsink temperature 3
minimal distance to OH
temperature warning
setting mode
OH warning level
E.OH stop mode
warning OH stop mode
warning bits
warning mask
pn08 E.OH stop mode (immediate switching off, or triggering of FAULT
and co25 brake control closing
pn07 OH warning level
Function
Heat sink temperature at different measuring points
(depending on the power unit size)
Display of the heatsink temperature measuring point
1
Display of the heatsink temperature measuring point
2
Display of the heatsink temperature measuring point
3
Display of the difference between the heatsink tem-
perature and the associated error trigger value
Selection of the reference level for generating the
overtemperature warning
Temperature when a warning is triggered
Error reaction (=> see Chapter 4.3.1 Errors)
Error reaction to pre-warning (=> also chapter 4.3.1
Errors)
Display of the warnings bit-coded (=> 4.3.3 Warn-
ings)
Mask for warning bit in the status word (=> 4.3.3
Warnings)
time).
can be programmed.
(co24 brake
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