Validity And Liability; Copyright; Specified Application; Standard Operation - KEB Combivert R6 Instruction Manual

Preface
1.3

Validity and liability

Application and use of our units in the target products is outside of our control and the-
refore exclusively in the area of responsibility of the machine manufacturer.
The information contained in the technical documentation, as well as any user-specific advice
in spoken and written and through tests, are made to best of our knowledge and information
about the application. However, they are considered for information only without responsibility.
This also applies to any violation of industrial property rights of a third-party.
Selection of our units in view of their suitability for the intended use must be done generally by
the user.
Inspections and tests can only be done by the machine manufacturer within the framework of
the application. Inspections and tests must be repeated, even if only parts of hardware, soft-
ware or the unit adjustment are modified.
Unauthorized opening and improper tampering can lead to bodily injuries or liability insurances
and this cause loss of the warranty. Original spare parts and authorized accessories by the
manufacturer serve as security. The use of other parts excludes liability for the consequences
arising out of.
The suspension of liability is especially valid also for shutdown damages, lost profit, data loss
or other consequential damages. This is also valid, if we have been referred to the possibility
of such damages.
Should any part of this agreement be invalid for any reason, it is to be replaced with a corre-
sponding text, which is valid and equivalent to the intended meaning. The rest of the agree-
ment shall remain unaffected and valid.
1.4

Copyright

The customer may be use the instruction manual as well as further enclosed documents or
parts from it for internal purposes. KEB has the copyrights and they remain effective also to
the full extent.
1.5 Specified application
The COMBIVERT R6-S serves exclusively for the supply of frequency inverters with DC input
and/or regeneration of excess energy into the supply system. The operation of other electrical
consumers is prohibited and can lead to malfunctions or to the destruction of the units.

1.5.1 Standard operation

If the DC link voltage increases to a value above the peak value of the mains voltage (negative
power), feedback of the current into the mains occurs automatically. The mains voltage is ana-
log measured. The feedback occurs in a square-wave format, whereby the current flow period
corresponds to the times of a B6 bridge circuit. Regeneration is finished if the DC link voltage
decreases the supply peak voltage (positive power).

1.5.2 Abnormal operation

When exceeding the permissible limit values for voltage, current or temperature the current
flow between DC link and mains is blocked during regeneration. An appropriate error message
is also displayed during supply. The unit must be disconnected from the supply system or the
load must be switched off in case of overcurrent. This can be done by opening the control re-
lease of the frequency inverter.
At factory setting the modulation is switched off in case of a net phase and/or a synchronisation
line failure and the error message E.nEt is displayed.
Special adjustments from KEB are necessary if the modulation and/or the standard operation
should start again within a defined time in case of return of power supply.
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