ABB ACS880-1604LC, Hardware Manual

Page: 79 / 200

Disconnecting the DC/DC converter with DC
switch/disconnector
Tasks
Safety
WARNING!
Obey the safety instructions during the start-up procedure. See Safety instructions for
ACS880 liquid-cooled multidrive cabinets and modules (3AXD50000048633 [English]).
If you ignore the safety instructions, injury or death, or damage to the equipment can
occur.
If you are not a qualified electrician, do not do installation or maintenance work.
Stopping the DC/DC converter
Press the control panel Stop key. Change the control panel to local mode (loc/rem key). To prevent
accidental restart, set parameter
120.19 Enable start signal to value Off .
Disconnecting the energy storage
Open the energy storage protective circuit breaker.
Open the energy storage disconnecting device. Lock out and tag out.
Disconnecting the DC/DC converter
Open the DC switch/disconnector [Q11]. Lock out and tag out.
Working inside the DC/DC converter cubicle
If you need to work inside the DC/DC converter cubicle, you must switch off and disconnect the whole
multidrive system from any (AC, DC, main or auxiliary) power sources. Before you start the work, repeat
also the necessary safety precautions. See
Electrical safety precautions (page 60) .
Start-up 79
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