Specified Application; Standard Operation; Abnormal Operation; Unit Identification - KEB COMBIVERT R6 Instruction Manual

1.3 Specified application
The COMBIVERT R6-S serves exclusively for the supply of frequency inverters with DC input
and/or feedback 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.

1.3.1 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. The feedback is finished if the DC link voltage
decreases the supply peak voltage (positive power).

1.3.2 Abnormal operation

When exceeding the permissible limit values for voltage, current or temperature the current
flow between DC link and mains is blocked during recovery. 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.
1.4 Unit identification
1 9 . R 6 . s 3 E - 9 0 0 A
Type A: Heat sink (standard)
Design 0: default
reserved 0: default
Voltage 9: 3-ph.; 180...550 V; AC
housing E
Options 0: without
1: precharging
Control S: 1B.R6
Series R6
Unit size 15 (13), 19 (16)
Preface
B: Flat Rear
3: Precharging, DC-fuses
GB - 5