OPERATION
PRODUCT
ACS6000
DOCUMENT KIND
User manual
DOCUMENT ID.
3BHS212794 E01
REV.
N
LANG.
en
PAGE
169/266
Grounding the drive is only possible after the main power supply has been
disconnected and the DC link has discharged. The yellow lamp lights up when the
DC-link voltage is below 50 V(DC).
When the grounding switch is in position grounded, the door safety switches of the
medium voltage units are released and the doors can be opened.
8.6.1. Lamp test
The indicator lamp for the grounding switch and the white lamp (Fig. 8-6) have an
integrated momentary push button. The lamps light up when the lamp cap is
pressed.
8.6.2. Door locking system
All doors of the drive are lockable. Additionally, the doors of the medium voltage
units of the drive are equipped with safety switches and locking bars. The doors
labeled CIU, COU, EXU and WCU are not part of the interlocking circuit and can be
opened when the drive is energized.
NOTE – For more information, see “10.4.4 Unlocking and opening the doors”
on page 221.
Table 8-1 Medium voltage units with safety switches and locking bars
Standard cabinet units Optional cabinet units
ARU INU
LSU IFU
CBU IRU
TEU BCU
RBU
VLU
ISU
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