PREVENTIVE AND CORRECTIVE MAINTENANCE
PRODUCT
ACS6000
DOCUMENT KIND
User manual
DOCUMENT ID.
3BHS212794 E01
REV.
N
LANG.
en
PAGE
218/266
• DC link discharges.
While the DC link discharges, the CDP control panel shows the following:
• SUPPLY OFF push button flashes and changes to a permanent light when
the DC link is discharged.
When the DC link is discharged, the drive is “ReadyOn”.
4. Rack-out, lock-out, ground and tag-out the main power feeder.
5. Wait for the yellow lamp GROUNDING SWITCH UNLOCKED on the CBU to light
up (see Fig. 10-7).
CAUTION! If the lamp does not light up, DO NOT force the grounding switch in
any direction before you know the reason why the lamp has not lit up. If you try,
the following can happen:
• The switch closes when the DC link is still energized and short-circuits the
DC-link capacitors. The short-circuit manifests itself in a loud bang.
• The switch is damaged because it was not released for closing.
• Components inside the drive are damaged.
IMPORTANT! If the yellow lamp does not turn on, continue with“10.4.3
Grounding the drive when the grounding switch is not released” on page 220,
otherwise continue with step 6.
Alternating display message:
– OffSeqOn
– Discharging
– AuxiliaryOn
1 L -> 600.0 rpm
StateINU OffSeqOn
MOTOR SP 0.00 rpm
POWER 0.0 kW
1 L -> 0.0 rpm
StateINU ReadyOn
DC VOLT 0.00 rpm
PRI VOLT 0 kW
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