Overtemperature Unit (Ohi) - KEB COMBIVERT F6 Programming Manual

Protection functions

Overtemperature unit (OHI)

NOTICE
Index Subidx Id-Text Name
0
1
2
0x2C1A ru26
3
4
0x2C4D 0 ru77
0x2A06 0 pn06
0x2A09 0 pn09
0x2A0A 0 pn10
0x2A52 0 pn82
0x2C02 0 ru02
0x2A1C 0 pn28
The internal temperature is measured at several points, with one sensor on the
control board and one or more sensors in the power unit.
On reaching an unit-dependent maximum internal temperature, the drive behaves
according to the setting of
The length of time required to shutdown the drive depends on many factors. 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 111: ERROR time OHI.
If these 2 seconds are too small to ensure a meaningful completion of the machine
cycle, a warning level
this temperature, bit 3 is set in
warning mask also bit 7 in the status word.
64
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.
internal temperature PU
values
internal temperature PU 1
internal temperature PU 2
internal temperature PU 3
minimal distance to OHI
internal temperature CB
temperature warning set-
ting mode
OHI warning level
E.OHI stop mode
warning OHI stop mode
warning bits
warning mask
pn10 E.OHI stop
pn09 OHI warning level
ru02 warning bits
Function
Internal temperature in the power unit (PowerUnit)
at different points (depending on the inverter size)
Internal temperature in the power unit measuring
point 1
Internal temperature in the power unit measuring
point 2
Internal temperature in the power unit measuring
point 3
Display of the smallest difference between an inter-
nal temperature and the associated error trigger
value
Internal temperature on the control board (Con-
trolBoard)
Selection of the reference level for generating the
overtemperature warning
Internal temperature (of the power unit or control
board) when OHI 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)
mode.
can be programmed. Upon reaching
and with respective setting of the
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