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Safety clamp
To maintain the galvanic isolation (PELV) between
the control terminals and high-voltage terminals, the
accompanying safety clamp must be attached to
VLT 2803-2815, 200-240 V, and VLT 2805-2815,
380-480 V. Attach the safety clamp to the strain
relief plate with the two screws provided.
Input fuses
For all unit types, external fuses must be fitted in the
AC line supply to the drive. For UL/cUL applications
with an AC voltage of 200-240 Volts, use fuses type
Bussmann KTN-R (200-240 Volts) or Ferraz Shawmut
type ATMR (max. 30A). For UL/ cUL applications
with an AC voltage of 380-480 Volts, use fuses type
Bussmann KTS-R (380-480 Volts). See Technical data
in this manual for correct dimensioning of fuses.
It is the responsibility of the installer or
user to insure proper external AC power
input fusing to the drive.
AC line connection
All drives that are equipped with an RFI
filter cannot be connected to a grounded
DELTA or IT mains/AC line system.
NOTE
Check that the AC voltage matches the voltage
rating of the drive. The drive rating is on the
drive nameplate. See Technical data in this
manual for correct dimensioning of cable cross-section.
For single phase 220-240 Volts input, attach the
neutral wire to terminal N
phase wire to terminal L1
No. N
L1
AC line voltage 1 x 220-240 V
(L2)
(L1) (L3)
N
L1
No. 95
Ground connection
No. N
L1
AC line voltage 3 x 220-240 V
(L2)
(L1) (L3)
L2
L1
L3
No. 95
Ground connection
No. 91 92 93 AC line voltage 3 x 380-480 V
L1 L2 L3
No. 95
Ground connection
16
and connect the
(L2)
.
(L1)
VLT® 2800 Series
380-460 Volt units with RFI-filters may not
be connected to AC line supplies in which
the voltage between phase and ground is
more than 300 Volts. Please note that for the AC line
for IT and the delta ground the AC line voltage can
exceed 300 Volts between phase and ground. Units
with type code R5 can be connected to mains supplies
with up to 400 V between phase and ground.
See Technical data for correct dimensioning
of cable cross-section.
Motor connection
NOTE
It is recommended that an LC filter be
connected to the output of the drive for motors
without phase insulation paper.
See Technical data in this manual for correct
dimensioning for cable cross-section. All types
of three-phase asynchronous standard motors
can be connected to a drive.
Connect the motor to terminals 96, 97, 98.
Connect ground to terminal 99.
N0. 96 97 98
Motor voltage 0-100%
U
V
W
of AC line voltage.
N0. 99
Ground connection
See Technical data for correct dimensioning
of cable cross-section.
Ensure that the motor is wired for the line voltage
before connecting to the drive.
Direction of motor rotation
To change the direction of motor rotation, switch any
two phases at the drive output or at motor terminals.
Motor thermal protection
The electronic thermal relay in UL approved variable
frequency drives has received the UL approval for single
motor protection, when parameter 128 Motor thermal
protection has been set for ETR Trip and parameter
MG.28.A8.22 - VLT is a registered Danfoss trademark
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