The connection can be made using either cable
connectors or clamps:
•
EMC cable connectors: generally available cable
connectors can be used to ensure an optimum
EMC connection.
•
EMC cable clamp: Clamps allowing for easy
connection are supplied with the adjustable
frequency drive.
4.1.7 Motor Cable
The motor must be connected to terminals U/T1/96, V/
T2/97, W/T3/98. Ground to terminal 99. All types of three-
phase asynchronous standard motors can be used with an
adjustable frequency drive unit. The factory setting is for
clockwise rotation with the adjustable frequency drive
output connected as follows:
Terminal No.
Function
96, 97, 98, 99
Line power U/T1, V/T2, W/T3
Ground
•
Terminal U/T1/96 connected to U-phase
•
Terminal V/T2/97 connected to V-phase
•
Terminal W/T3/98 connected to W-phase
96
97
U
V
96
97
98
U
V
W
98
W
130HA036.10
The direction of rotation can be changed by switching two
phases in the motor cable or by changing the setting of
4-10 Motor Speed Direction
and reversing.
Unit Size 6X Requirements
requirements: The cables are required to be equal length
within 10% between the inverter module terminals and the
first common point of a phase. The recommended
common point is the motor terminals.
Unit Size 61/63 requirements: Motor phase cable quantities
must be multiples of 2, resulting in 2, 4, 6, or 8 (1 cable is
not allowed) to obtain equal amount of wires attached to
both inverter module terminals. The cables are required to
be equal length within 10% between the inverter module
terminals and the first common point of a phase. The
recommended common point is the motor terminals.
Unit Size 62 and 64 requirements: Motor phase cable
quantities must be multiples of 3, resulting in 3, 6, 9, or 12
(1 or 2 cables are not allowed) to obtain equal amount of
wires attached to each inverter module terminal. The wires
are required to be equal length within 10% between the
inverter module terminals and the first common point of a
phase. The recommended common point is the motor
terminals.
Output junction box requirements: The length, a minimum
of 8 ft [2.5 m], and quantity of cables must be equal from
each inverter module to the common terminal in the
junction box.
4.1.8 Shielding against Electrical Noise
Before mounting the line power cable, mount the EMC
metal cover to ensure best EMC performance.
NOTE!
The EMC metal cover is only included in units with factory-
installed A1/B1 RFI Filter option..
How to Install
VLT AQUA 12-Pulse High Power Instruction Manual
4-10
MG.20.Y1.22 - VLT
®
is a registered Danfoss trademark
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