Protection functions
© KEB, 2015-07
COMBIVERT R6-N
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3.6.1.4 Overload
The overload protection is a function that triggers an error for which, however, a pre-warning can be generated.
With Pn.09 "Overload warning level" a value between 0...100 % can be adjusted, when the "Warning! Over-
load" or the "Warning! Overload during standstill" is set. The response to the overload warning is set with Pn.08
"overload warning response".
Overload (OL)
The implementation of the general overload protection is described in chapter 6.1.7 "Overload characteristics".
If the 100% load factor of the COMBIVERT is exceeded by 5 %, the internal overload counter starts to count
forward. If the load factor falls below 100 %, the counter counts backward. The current counter content can
be read in parameter ru.39. Upon reaching 100 % the inverter switches off with error message "E.OL" and the
counter counts backward. If it reaches 0 %, the status changes to E.nOL and the error can be reset.
3.6.1.5 Inverter over temperature
Heat sink overtemperature
The heat sink temperature acquisition protects the power module from thermal overload. The temperature
when the COMBIVERT switches off with error message "8: ERROR! Overtemperature" (E.OH) depends on the
power unit.
The status changes after a cooling period from "Error! Overtemperature" to "36: Heat sink temperature normal
"(E.nOH) and is then resettable.
With Pn.11 "Heat sink overtemperature warning level" a level of between 0° C and 90 °C can be set, at which
the pre-warning is triggered. The response to the warning message is set with Pn.10 „Heat sink overtempera-
ture response“.
internal overtemperature
The COMBIVERT is protected against malfunctions due to high interior temperatures.
Upon exceeding a unit-specific (warning) temperature the interior fan is activated. If the interior temperature is
still too high after 10 minutes, the response adjusted with Pn.16 is triggered. The reaction when decreasing the
limit value is depending on the adjusted response in Pn.16.
On exceeding the unit-specific (error) temperature the delay time adjusted in Pn.17 is activated. If the interior
temperature is still too high after this period, E.OHI is triggered. If the interior temperature decreases again
below the limit value, it is switched to E.nOHI. Now the reset is possible.
3.6.1.6 External fault
With Pn.04 „Input selection external fault", one or more digital inputs can be programmed which can trigger the
error „31: ERROR! External input" (E.EF).
With Pn.03 "Response to external error" , the response of the inverter to the digital input is defined. With Bit 1
„2: Pn.04 = E.UP“, the function of Pn.04 can be changed and the triggering of an error via a digital input can
be deactivated.
3.6.1.7 Bus error
The COMBIVERT contains two watchdogs that monitor the communication between an external bus, the oper-
Summary of Contents for COMBIVERT R6-N
Page 2: ...Page1 1 2 COMBIVERT R6 N KEB 2015 07 Introduction ...
Page 4: ...Page1 1 4 COMBIVERT R6 N KEB 2015 07 Introduction ...
Page 14: ...Page1 2 6 COMBIVERT R6 N KEB 2015 07 Product overview ...
Page 28: ...Page2 1 6 COMBIVERT R6 N KEB 2015 07 Fundamentals ...
Page 34: ...Page2 2 6 COMBIVERT R6 N KEB 2015 07 Password input ...
Page 40: ...Page3 1 2 COMBIVERT R6 N KEB 2015 07 Parameter summary 3 1 1 Parameter list R6 N 3 1 3 ...
Page 128: ...Page 3 9 10 COMBIVERT R6 N KEB 2015 07 Define CP Parameters ...
Page 136: ...Page 4 1 8 COMBIVERT R6 N KEB 2015 07 Preparatory measures ...
Page 146: ...Page 5 1 6 COMBIVERT R6 N KEB 2015 07 Error Diagnosis ...
Page 156: ...Page 7 1 2 COMBIVERT R6 N KEB 2015 07 Appendix 7 1 1 Index 7 1 3 ...