Wire And Cable Access; Conduit Entry Diagrams - Danfoss VLT Option Panel Instruction Manual

Electrical Installation

Wire and Cable Access

• Determine the wiring path through the option
panel enclosure. See the mechanical layout
drawing located on the inside cover of the
unit for locations to connect power and
motor wiring.
• Removable access covers are provided for
cable connections (see Figure 3-8). Remove
access covers prior to drilling holes to
prevent metal shavings from damaging
internal electronic components.
• For some units, access holes are provided
for input power, motor leads, and control
wiring.
• Run input power, motor wiring, and control
wiring in three separate conduits for
isolation.
R ,
UN INPUT POWER MOTOR WIRING AND CONTROL WIRING IN THREE
SEPARATE METALLIC CONDUITS OR RACEWAYS FOR HIGH FREQUENCY
. F
NOISE ISOLATION AILURE TO ISOLATE POWER
CONTROL WIRING COULD RESULT IN LESS THAN OPTIMUM DRIVE AND
ASSOCIATED EQUIPMENT PERFORMANCE
• The drive always resides in the left-hand
panel when multiple panels are present.
• Power connections are typically on the right-
side panel, or far right for tier 3 panel
configurations.
• NEMA 12 enclosures available for additional
environmental protection.
• Control wiring should be isolated from power
components inside the unit as much as
possible.
• See the mechanical layout drawing on the
inside of the unit's panel and the connection
diagram supplied with the unit for connection
details.
18
NOTE
,
MOTOR AND
.
Control wiring
Input power
Tier 1 (bottom view)
Drive
Tier 2 (bottom view) NEMA 1
Drive
Tier 2 (bottom view) NEMA 12
Additional options
Drive
Tier 3 (bottom view) NEMA 1
Figure 3-8. Conduit Entry Diagrams
Motor power
Bypass
Bypass
Bypass