Overspeed (Error Overspeed / Error Overspeed (Emf)) - KEB COMBIVERT F6 Programming Manual

Protection functions

Overspeed (ERROR overspeed / ERROR overspeed (EMF))

Index Id-Text Name
0x2A1B pn26 overspeed level
0x2A1C pn27 E.overspeed stop mode
0x2A46 pn70 overspeed factor (EMF)
E. overspeed EMF) st.
0x2A47 pn71
mode
0x2A48 pn72 overspeed level (EMF)
There are 2 functions for overspeed protection
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NOTICE
© 2022 KEB Automation KG
Note
Tripping level ERROR overspeed in % rated
speed
Error reaction (=> see Chapter 4.3.1 Errors)
Tripping level ERROR overspeed (EMF)
Error reaction (=> see Chapter 4.3.1 Errors)
Tripping level ERROR overspeed (EMF) in rpm
An application-specific speed limit can be set with pn26.
It is calculated from the value of the EMF at which speed the regenerative
voltage of the synchronous machine reaches a value which damage the
capacitors in the inverter DC link. The safety difference to this limit is pre-
set with pn70 overspeed factor
the error is triggered at 90% of the max. theoretically permissible speed
value. The level when the error is triggered is displayed in
level (EMF).
������ �� ����70
����72 = ∗ ∗ 1000 ∗ ����
�� 14 100%
The response to the error is defined with
mode.
➢ These errors are only triggered when the modulation is switched
on.
(pn26 / pn27 and pn70...pn72).
(EMF). A value of 90% for
pn71 E. overspeed (EMF) st.
pn70 means,
pn72 overspeed
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