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22
Affinity User Guide
www.controltechniques.com Issue Number: 5
3.3 Terminal cover removal
3.3.1 Removing the terminal covers
Standard drive
Size 1 is installed with two terminal covers: AC/Control and DC terminal
covers.
Size 2 is installed with three terminal covers: AC/Control , High current
DC / Braking and low voltage DC terminal covers.
Size 3 is installed with four terminal covers: Control, High current DC /
Braking, low voltage DC and AC terminal covers.
Size 4, 5 and 6 are installed with three terminal covers: Control, input
and output terminal covers.
In order to provide access to the mounting holes when a size 1, 2 or 3
drive is through-panel mounted, the control terminal cover must be
removed. For size 3 the high current DC / Braking and AC terminal
covers must also be removed. Once the drive has been mounted, the
terminal covers can be replaced.
E12/E54 and E12/E66
Size 1 to 4 are only installed with 1 outer cover which is held on by 6
sealing screws. By removing this cover access can be gained to all
power and control terminals as per the standard drive. No further covers
require removal.
Size 5 and 6 are installed with 2 removable covers, top and bottom, for
access to input, output and control terminals.
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 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.
WARNING
WARNING
Summary of Contents for Affinity
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