Screened Cables; Motor Cable - Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Electrical Installation
Enclosure Terminal
sizes
F Mains
Motor
Load sharing
Brake
Regen
4 4
Table 4.3 Torque for Terminals

4.1.6 Screened Cables

WARNING
Danfoss recommends using screened cables between the
LCL filter and the frequency converter. Unshielded cables
can be used between the transformer and the LCL filter
input side.
Make sure to connect screened and armoured cables
properly to ensure high EMC immunity and low emissions.
The connection can be made using either cable glands
or clamps.
•
EMC cable glands: Available cable glands can be
used to ensure optimum EMC connection.
•
EMC cable clamp: Clamps allowing easy
connection are supplied with the frequency
converter.

4.1.7 Motor Cable

Connect the motor to terminals U/T1/96, V/T2/97, W/T3/98.
Ground to terminal 99. All types of 3-phase asynchronous
standard motors can be used with a frequency converter.
The factory setting is clockwise rotation with the frequency
converter output connected as follows:
Terminal number
96, 97, 98
99
Table 4.4 Mains Terminals
44
Operating Instructions
Torque [Nm] (in-lbs) Bolt size
19–40
M10
(168–354)
19–40
M10
(168-354)
8.5-20.5
(75-181) M8
8.5-20.5 M8
(75-181)
Function
Mains U/T1, V/T2, W/T3
Ground
Danfoss A/S © 08/2014 All rights reserved.
•
Terminal U/T1/96 connected
to U-phase
•
Terminal V/T2/97 connected
to V-phase
•
Terminal W/T3/98
connected to W-phase
Table 4.5 Wiring for Motor Directions
The direction of rotation can be changed by switching 2 phases in
the motor cable or by changing the setting of 4-10 Motor Speed
Direction.
To perform motor rotation check, follow the steps in
parameter 1-28 Motor Rotation Check.
F enclosure requirements
F1/F3 requirements
Attach an equal number of wires to both inverter module
terminals. To obtain an equal number, motor phase cable
quantities must be multiples of 2, resulting in 2, 4, 6, or 8
(1 cable is not allowed). The cables are required to be of
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.
F2/F4 requirements: Attach an equal number of wires to
both inverter module terminals. To obtain an equal
number, motor phase cable quantities must be multiples
of 3, resulting in 3, 6, 9, or 12 (1 or 2 cables are not
allowed). The wires are required to be of 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, minimum 2.5 m, and quantity of cables must
be equal from each inverter module to the common
terminal in the junction box.
NOTICE
If a retrofit application requires an unequal number of
wires per phase, consult the factory for requirements
and documentation, or use the top/bottom entry side
enclosure option.
Motor
U V W
2 2 2
U V W
1 1 1
FC
96 97 98
Motor
U V W
2 2 2
U V W
1 1 1
FC
96 97 98
MG11F502