09.02 Start-Up
Siemens AG 6SE7087-6AK85-1AA0
4-1
Rectifier/Regenerating Unit Operating Instructions
4 Start-Up
4.1 Introduction and handling start-up
WARNING
Despite disconnecting the power terminals from the supply, voltage may still be
present on terminal X19 due to the external fan supply.
4.1.1 Handling the start-up instructions
NOTE
♦ Section 4.2 First start-up:
First start-up of the rectifier/regenerating unit
♦ Section 4.3 Start-up aids:
Index-type reference
for start-up and use of the rectifier/regenerating unit, which only has to be used if
actually required!
♦ Section 4.4 Function diagrams:
Graphical overview of the setpoint channel, open-loop/closed-loop control, analog inputs/outputs, and the
rectifier/regenerating unit data sets
4.1.2 General explanation of the terminology and functions of the rectifier/regenerating unit
Abbreviations:
♦ Abbreviations used: Refer to Section 15 "Information, notes "
Mode and automatic control variants of the rectifier/regenerating unit:
♦ "Function block diagrams: Open and closed-loop control": see Section 4.4
♦ Application: Power supply of the variable-voltage DC link of SIMOVERT converters of the
6SEE70 series
♦ Mode variants:
a) The line voltage in the regenerative branch is stepped up by an (auto) transformer to prevent
having to reduce the DC link voltage in regenerating mode
b) Permanent reduction of the DC link voltage by phase angle control in rectifier mode in order
to always be able to feed power back into the system
P318 Reduced DC link voltage setpoint (e.g. = 80 %)
P571 = 0001 Permanent selection of reduced voltage
c)
Reduction of the link voltage for regenerative mode only by means of open-loop control to be
able to exploit the line voltage fully in rectifier mode and not have to use an autotransformer
for feeding power back into the system. This type of power feedback is not intended for
dynamic operation, but only for setpoint-controlled operation in conjunction with external
open-loop control.
P318 Reduced DC link voltage setpoint (e.g. = 80 %)
P571 = 1004 Selection of reduction via terminal X101-12
P613 = 1001 Output "DC Link voltage reduced" message to signaling relay X104-17/18
P319 Hysteresis "Link voltage reduced" message
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