Dinverter
A
User Guide
Issue code: d2au9
13
Isolation device
The
AC
supply must be disconnected from the Drive using an
approved isolation device before any cover is removed
from the Drive or before any servicing work is performed.
Stored charge
The Drive contains capacitors that remain charged to a
potentially lethal voltage after the
AC
supply has been
disconnected. If the Drive has been energized, the
AC
supply
must be isolated at least eight minutes before work may
continue.
Normally, the capacitors are discharged by an internal
resistor. Under certain, unusual fault conditions, it is
possible that the capacitors may fail to be discharged, or be
prevented from being discharged by a voltage applied to
the output terminals. If the Drive has failed in a manner
that causes the display to go blank immediately, it is
possible the capacitors will not be discharged. In this case,
consult Control Techniques or their authorized distributor.
AC
supply by plug and socket
Special attention must be given if the Drive is installed in
equipment which is connected to the
AC
supply by a plug
and socket. The
AC
supply terminals of the Drive are
connected to the internal capacitors through rectifier
diodes which do not give reliable isolation. If the plug
terminals can be touched when the plug is disconnected
from the socket, a means of automatically isolating the plug
from the Drive must be used (eg. a latching relay).
Water ingress
The Drive has no protection against water ingress.
Ventilation holes
When the vent covers are not fitted, objects less than 3mm
(
1
/
8
in) diameter can pass through the vent holes and
possibly make contact with live parts inside the Drive.
Cable entry
When cable glands are not fitted, objects less than 25mm
(1 in) wide can pass through the cable entry opening and
possibly make contact with live parts inside the Drive.
STOP function
The STOP function does not remove dangerous voltages
from the Drive or any external option units.
