Electrical installation
4.9 Other connections
Drive converter cabinet units
84
Operating Instructions, 07/07, A5E00288214A
Duty cycles
33
'%
WV
3
3
3
3
'%
3
'%
3 [3
'%
3
[3
'%
3
[3
'%
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3RZHUSHUPLVVLEOHHYHU\VIRUV
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Figure 4-12 Duty cycles for the braking resistors
Threshold switch
The response threshold at which the braking unit is activated and the DC link voltage
generated during braking are specified in the following table.
Note
Since the braking energy is normally supplied back to the line and the braking chopper is
only to be activated in the event of a power failure, the default threshold value setting should
be retained rather than reduced.
WARNING
The threshold switch must only be used when the cabinet unit is switched off and the DC
link capacitors are discharged.
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Страница 6: ...Preface Drive converter cabinet units 6 Operating Instructions 07 07 A5E00288214A ...
Страница 14: ...Table of contents Drive converter cabinet units 14 Operating Instructions 07 07 A5E00288214A ...
Страница 28: ...Device overview 2 5 Type plate Drive converter cabinet units 28 Operating Instructions 07 07 A5E00288214A ...
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Страница 520: ...Siemens AG Automation and Drives Large Drives P O Box 4743 90025 NÜRNBERG GERMANY www ad siemens com A5E00288214A ...