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30 E300 Design Guide
Issue Number: 1
3.3 Terminal cover removal
3.3.1 Removing the terminal covers
Figure 3-1 Location and identification of terminal covers (size 3 to 7)
Isolation device
The AC and / or DC power 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 and / or DC power supply has been
disconnected. If the drive has been energized, the power supply must be isolated for 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 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.
3
DC / Braking
terminal cover
Control / AC /
Motor terminal cover
DC / Braking
terminal cover
AC / Motor
terminal cover
Control terminal
cover
4
Control / AC /
Motor terminal cover
DC / Braking
terminal cover
7
AC / DC
terminal cover
Motor / Braking
terminal cover
Control terminal
cover
DC / Braking
terminal cover
left
Control
terminal cover
AC / Motor
terminal cover
DC / Braking
terminal cover
right
6
5
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