Danfoss VLT AutomationDrive FC 301, Instruction Manual

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130BD531.10
U
V
W
96
97
98
Figure 4.5 Motor Connection
Figure 4.6 represents line power input, motor and
grounding for basic adjustable frequency drives. Actual
configurations vary with unit types and optional
equipment.
95
130BB920.10
+DC
BR-
B
M
A
I
N
S
L1 L2 L3
91 92 93
RELA
Y 1 RELA
Y 2
99
- LC -
U V
W
MO
TOR
99
Figure 4.6 Example of Motor, Line Power and Ground Wiring
4.7 AC Line Input Connection
•
Size the wiring based upon the input current of
the adjustable frequency drive. For maximum
wire sizes, see
chapter 8.1 Electrical Data .
•
Comply with local and national electrical codes
for cable sizes.
Procedure
1. Connect the 3-phase AC input power wiring to
terminals L1, L2, and L3 (see
Figure 4.6 ).
2. Depending on the configuration of the
equipment, connect the input power to the line
power input terminals or the input disconnect.
3. Ground the cable in accordance with the
grounding instructions provided in
chapter 4.3 Grounding .
4. When supplied from an isolated line power
source (IT line power or floating delta) or TT/TN-S
line power with a grounded leg (grounded delta),
ensure that
14-50 RFI 1 is set to [0] Off to avoid
damage to the intermediate circuit and to reduce
ground capacity currents in accordance with IEC
61800-3.
4.8 Control Wiring
•
Isolate the control wiring from the high power
components in the adjustable frequency drive.
•
When the adjustable frequency drive is
connected to a thermistor, ensure that the
thermistor control wiring is shielded and
reinforced/double insulated. A 24 V DC supply
voltage is recommended.
Electrical Installation Instruction Manual
MG33AP22 Danfoss A/S © Rev. 09/2014 All rights reserved. 17
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