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General
The specific installation instructions may vary depending upon the
model of VLT 6000 Series being installed. When this occurs, the model
can be identified by a "VLT Type 6XXX" number. This number can be
found on the red nameplate on the outside of the left side of the drive
enclosure, or the outside of the right side of a drive with an auxiliary
enclosure. A cross reference from the VLT Type to the Danfoss
Graham model number can be found on the next page.
The drive must always be installed vertically. To ensure that no injury
or damage occurs, the drive must always be firmly attached to the wall
or the floor before further installation work is carried out.
Clearances
The drive is cooled by means of air circula-
tion. For proper cooling, the minimum
distances above and below the unit must be
maintained as shown in the table below. For
units with an auxiliary enclosure mounted with
the drive on a back panel, the required
clearances are measured from the top and
bottom of the drive, not the back panel.
Drive Type
Clearance
VLT 6002-6005, 200-240V
4" (100mm)
VLT 6002-6011, 380-460V
VLT 6006-6032, 200-240V
8" (200mm)
VLT 6016-6062, 380-460V
VLT 6042-6062, 200-240V
9" (225mm)
VLT 6075-6125, 380-460V
VLT 6150-6275, 380-460V
12" (300mm) 12" (300mm)
VLT 6350-6550, 380-460V
16" (400mm) floor mount
All drives can be mounted with no side clearance. VLT 6350-6550
drives require 25 inches (605 mm) front space for access.
All drives except VLT 6002-6005, 200 to 240 V and VLT 6002-6011,
380 to 460 V must be mounted directly to the wall with no spacers. This
is to ensure that air flow is in contact with the heatsink all the way from
the bottom of the drive. If this is not possible, a metal plate at least as
large as the back of the drive must be firmly mounted to the back of the
drive. See the Cross Reference Table on the next page to convert
model numbers to drive type.
All drives except VLT 6002-6005, 200 to 240 V
and VLT 6002-6011, 380 to 460 V must be
mounted directly to a solid wall with no spacers
between the drive and the wall.
X
X
Top
Bottom
Must be mounted
Clearance
flush to wall
4" (100mm)
No
8" (200mm)
Yes
9" (225mm)
Yes
Yes
Yes
Sufficient space must be left in front of the drive to provide for door
swing on units with a hinged door. In addition, sufficient room must be
available for installation and service access. On units with an auxiliary
enclosure, the auxiliary enclosure door will have a greater door swing
than the drive. See the dimensional drawings of the auxiliary enclosure
which are included with the drive.
Plenum Mounting
The drive is UL rated for plenum mounting. If the drive is to be mounted
in the plenum, allow sufficient access for servicing. All normal
clearance, temperature and humidity limitations apply.
Grounding Plate
VLT Type 6002-6005, 200 to 240 V and VLT 6002-6001, 380 to 460 V
drives with a NEMA 1 enclosure have a plastic bottom cover with
provision for conduit entry. To meet UL requirements, the metal
grounding plate must be in place above the plastic bottom cover. It must
be grounded to the chassis, and the conduit grounded to it. If the
grounding plate is not factory installed, it must be installed in the drives
that have a plastic bottom panel to ensure proper grounding of the
conduit to the enclosure. Connect the ground wire from the grounding
plate to the ground tab marked with the ground symbol.
This tab is located near the AC line terminal strip. Mount the bottom
cover on the control unit.
Shielded Wires
Wires to control signals should be shielded to reduce radio frequency
noise interference.
When RFI is a concern, shielded cable should be used between the
drive and the motor.
If unshielded control wires are used, control inputs are subject to signal
disturbances. Such disturbances may affect drive operation. Extreme
noise levels may disturb the microprocessor of the control card.
The shield of the control wires must be grounded at the cable clamp at
the bottom of the drive, but the shield must continue with the cable all the
way up to the control card. The shield is not to be connected to any of
the terminals on the control card. For safety reasons, the insulation
around the shield should only be removed where it is connected to the
cable clamp. The insulation should be left on the shield between the
clamp and the terminals.
Generally speaking, all conductors coming from a shielded control
cable must be as short as possible. Long conductor ends attract noise.
The shield must be connected to the chassis by means of the cable
clamp. Long pigtails on the shield reduce the effectiveness of the shield.
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