Brake Cable For Frequency Converters With Factory-Installed Brake Chopper Option; Shielding Against Electrical Noise; Mains Connection - Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual

How to Install
module terminals and the first common point of a phase.
The recommended common point is the motor terminals.
F14 requirements: Motor phase cable quantities must be
multiples of 4, resulting in 4, 8, 12, or 16 (1, 2, or 3 cables
are not allowed) to obtain an equal amount of wires
attached to each inverter module terminal. The wires must
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 amount of
wires per phase, consult Danfoss for requirements and
documentation, or use the top/bottom entry side cabinet
option.
4.1.8 Brake Cable for Frequency Converters
with Factory-installed Brake Chopper
Option
(Only standard with letter B in position 18 of product type
code).
Use a screened connection cable to the brake resistor. The
maximum length from the frequency converter to the DC
bar is limited to 25 m (82 ft).
Terminal number Function
81, 82 Brake resistor terminals
Table 4.4 Brake Resistor Terminals
The connection cable to the brake resistor must be
screened. Connect the screen to the conductive back plate
on the frequency converter and to the metal cabinet of
the brake resistor with cable clamps.
Size the brake cable cross-section to match the brake
torque. See also the Instructions Brake Resistor and Brake
Resistors for Horizontal Applications for further information
regarding safe installation.
NOTICE
Depending on the supply voltage, voltages up to 1099 V
DC may occur on the terminals.
F enclosure requirements
Connect the brake resistor to the brake terminals in each
inverter module.
MG20Y202
Operating Instructions

4.1.9 Shielding against Electrical Noise

Before mounting the mains power cable, mount the EMC
metal cover to ensure best EMC performance.
NOTICE
The EMC metal cover is only included in frequency
converters with an RFI filter.
Illustration 4.14 Mounting of EMC shield.

4.1.10 Mains Connection

Mains and ground must be connected as detailed in
Table 4.5.
Terminal number
91-1, 92-1, 93-1
91-2, 92-2, 93-2
94
Table 4.5 Mains and Ground Connection Terminals
NOTICE
Check the nameplate to ensure that the mains voltage of
the frequency converter matches the power supply of
the plant.
Ensure that the power supply can supply the necessary
current to the frequency converter.
If the frequency converter is without built-in fuses, ensure
that the appropriate fuses have the correct current rating.
Danfoss A/S © Rev. 06/2014 All rights reserved.
Function
Mains R1/L1-1, S1/L2-1, T1/L3-1
Mains R2/L1-2, S2/L2-2, T2/L3-2
Ground
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4 4