3.6.7 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 VLT adjustable frequency drive output connected
as follows:
Terminal No.
Function
96, 97, 98, 99
Line power U/T1, V/T2, W/T3
Ground/Earth
• Terminal U/T1/96 connected to U-phase
• Terminal V/T2/97 connected to V-phase
• Terminal W/T3/98 connected to W-phase
The direction of rotation can be changed by switching two phases in the motor cable or by changing the setting of par. 4-10.
F Enclosure Recommendations/Requirements
Recommended F1/F3 connections: Motor phase cable quantities should be 2, 4, 6, or 8 (multiples of 2) to obtain equal amount of wires attached to both
inverter module terminals. The cables are recommended to be equal length between the inverter module terminals and the first common point of a phase.
The recommended common point is the motor terminals.
Recommended F2/F4 connections: Motor phase cable quantities should be 3, 6, 9, or 12 (multiples of 3) to obtain equal amount of wires attached to
each inverter module terminal. The wires are recommended to be equal length between the inverter module terminals and the first common point of a
phase. The recommended common point is the motor terminals.
Requirements for output junction box: 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.
NOTE!
If a retrofit application requires unequal amount of wires per phase, please consult the factory for requirements.
3 How to Install
VLT
®
Automation Drive FC 300
Instruction Manual High Power
3-48
MG.33.U2.22 - VLT
®
is a registered Danfoss trademark
3
