2 Chapter 1 Safety Information
EV3200 Door Control Inverter User Manual
1.6.3 STOP Function
The STOP function does not remove dangerous voltages
from the inverter, the motor or any external option units.
1.6.4 Stored Charge
The inverter contains capacitors that remain charged to a
potentially lethal voltage after the AC supply has been
disconnected. If the inverter has been energized, the AC
supply must be isolated at least ten 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 discharge, or be
prevented from being discharged by a voltage applied to the
output terminals. If the inverter 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
Emerson Network Power Co., Ltd. or their authorized
distributor.
1.6.5 Equipment Supplied By Plug And Socket
Special attention must be given if the inverter is installed in
equipment which is connected to the AC supply by a plug
and socket. The AC supply terminals of the inverter are
connected to the internal capacitors through rectifier diodes
that are not intended to give safety 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 inverter must be used (e.g. a latching relay).
1.6.6 Earthing Requirement
Earth the inverter properly. Failure to observe this may
cause electric shock
1.6.7 Capacitor And Varistors
Because the inverter outputs PWM pulse wave, capacitor
and varistors should not be connected with the output
terminals of the inverter, or the inverter may trip or
components may be damaged, as shown in Figure 1-1.
M
U
V
W
EV3200
inverter
Figure 1-1
Capacitor connection with inverter output
prohibited
1.7 Disposing Of Unwanted Inverter
When disposing the inverter, note that the capacitors may
explode when they are burnt and poisonous gas may be
generated when plastic parts are burnt. Please dispose the
inverter as industrial waste.
