Protection functions
© KEB, 2015-07
COMBIVERT R6-N
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3.6 Protection functions
The protective functions protect the regenerative unit against switching off caused by overcurrent, overvoltage
as well as thermal overheating. Furthermore, you can restart the drive after an error automatically (Keep-On-
Running).
3.6.1 Error and warning messages
For diagnostic purposes, the regenerative unit displays different malfunction- and error messages. Errors are all
those events that trigger an immediate switching off of the modulation, malfunctions allow a defined response.
For some events (ext. error, bus monitor response), one can decide in the programming whether this is an error
or a malfunction.
A pre-warining can be generated for some errors, such as for example the overload error. This pre-warning is
treated like a malfunction, i.e., the appropriate response to the pre-warning is programmable.
Example 1 (error):
The regenerative unit detects overcurrent and raises the error. Display in parameter ru.00: "Error ! Overcur
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rent" (E. OC). Since this error cannot be predicted, there is no possibililty of a pre-warning. The modulation is
switched off immediately.
Example 2 (operating condition programmed as error):
The reaction of the bus monitor ("watchdog") shall trigger an error. Programming Pn.05: „Watchdog response“ =
0 (error / no auto restart). Display in parameter ru.00: "ERROR bus" (E. buS). If a digital output is programmed
on a fault signalling relay, the relay switches.
Example 3 (operating condition programmed as malfunction):
The reaction of the bus monitor ("watchdog") shall trigger a malfunction. Programming Pn.05: „Watchdog re
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sponse“ = 0 (error / no auto restart). Display in parameter ru.00: "ERROR bus" (E. buS). If a digital output is
programmed on a fault signalling relay, the relay does not switch by fault.
(If the digital output shall also respond to malfunctions, switching condition 6 "abnormal stopping / error" must
be used. Alternatively, Pn.65 can be adjusted so that a malfunction is treated like an error with respect to the
status displays and the digital outputs. see chapter 5. Error Diagnosis
Example 4 (pre-warning):
If the heat sink temperature exceeds a limit (dependent on the unit type), the modulation is switched off, the
unit raises an error. With Pn.11 "heat sink overtemperature warning level" a temperature can be set at which a
pre-warning is generated.
Desired response: when exceeding the temperature of Pn.11 the unit switches off the modulation. When the
heat sink temperature decreases again, an automatic restart shall occur.
Programming Pn.10 „warning OH stop. mode“ = 3 (modulation off/ auto restart).
Display in parameter ru.00: "Warning! Heat sink temperature" (A. OH)
After decreasing the temperature the unit carry out an automatic restart. If, however, the heat sink temperature
continues to rise and exceeds the error limit, the COMBIVERT raises an "Error! Heat sink temperature" (E. OH).
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 ...