Ip 21/Ip 4X/ Type 1 Enclosure Kit; Lc Filters - Danfoss FC 300 Design Manual

FC 300 Design Guide
Brake Resistors
Brake resistors are used in applications where high dynamics are needed or a high inertia load has to be
stopped. The brake resistor is used to remove the energy from the DC link in the frequency converter.
Code numbers for brake resistors: See section Hot to Order.
Remote mounting Kit for LCP
The Local Control Panel can be moved to the front
of a cabinet by using the remote build in kit. The
enclosure is the IP65. The fastening screws must
be tightened with a torque of max. 1 Nm.

IP 21/IP 4X/ TYPE 1 Enclosure Kit

IP 20/IP 4X top/ TYPE 1 is an optional enclosure element available for IP 20 Compact units.
If the enclosure kit is used, an IP 20 unit is upgraded to comply with enclosure IP 21/ 4X top/TYPE 1.
The IP 4X top can be applied to all standard IP 20 FC 30X variants.
IP 21/Type 1 Enclosure Kit
A – Top cover
B – Brim
C – Base part
D – Base cover
E – Screw(s)
Place the top cover as shown. If an A or B option
is used the brim must be fitted to cover the top
inlet. Place the base part C at the bottom of the
drive and use the clamps from the accessory bag
to correctly fasten the cables. Holes for cable
glands:
Size A2: 2x PG16 (½") 3xPG21 (3/4")
Size A3: 3xPG16 (½") 3xPG21 (3/4")

LC Filters

When a motor is controlled by a frequency converter, resonance noise will be heard from the motor. This
noise, which is the result of the design of the motor, arises every time an inverter switch in the frequency
converter is activated. The frequency of the resonance noise thus corresponds to the switching frequency
of the frequency converter.
Options and Accessories
MG.33.B7.02 - VLT is a registered Danfoss trademark
Technical data
Enclosure:
Max. cable length between VLT and
unit:
Communication std:
IP 65 front
3 m
RS 485
271