Danfoss VLT FC 100 Design Guide

130BA389.10
95
91
L1
92
L2
93
L3
Illustration 8.4 Mains connection size C1 and C2 (IP 21/ NEMA
Type 1 and IP 55/66/ NEMA Type 12).
91 92 93
91 92 93
96 97 98
88 89
81 82
99
95
130BA718.10
Illustration 8.5 Mains connection size C3 (IP20).
91
L1
L2
L3
92
93
91
L1
L2
L3
92
93
99
95
96
97
98
88
89
81
82
U
V
W
DC-
DC+
R-
R+
130BA719.10
Illustration 8.6 Mains connection size C4 (IP20).
Usually the power cables for mains are unscreened cables.
8.1.3
Motor Connection
To comply with EMC emission specifications, screened/
armoured cables are recommended. For more information,
see 3.4.2 EMC Test Results.
See section General Specifications for correct dimensioning
of motor cable cross-section and length.
Screening of cables: Avoid installation with twisted screen
ends (pigtails). They spoil the screening effect at higher
frequencies. If it is necessary to break the screen to install
a motor isolator or motor contactor, the screen must be
continued at the lowest possible HF impedance.
Connect the motor cable screen to both the decoupling
plate of the frequency converter and to the metal housing
of the motor.
Make the screen connections with the largest possible
surface area (cable clamp). This is done by using the
supplied installation devices in the frequency converter.
If it is necessary to split the screen to install a motor
isolator or motor relay, the screen must be continued with
the lowest possible HF impedance.
Electrical Installation FC 300 Design Guide
160 MG.33.BD.02 - VLT
®
is a registered Danfoss trademark
88

Danfoss VLT FC 100 Specifications

General

Brand	Danfoss
Model	VLT FC 100
Category	DC Drives
Language	English