Ac Mains Input Connection; Motor And Mains Connection With Service Switch; Brake Resistor; Mechanical Brake - Danfoss VLT FCD 302 Operating Instructions Manual

Installation
Terminal
No.
62
2 2
63
66
67
B01-B12
G, R, V, N, P

2.4.6 AC Mains Input Connection

•
Size wiring based upon the input current of the
frequency converter. See the maximum wire size
in the Input Current and Wire tables in 8 Specifi-
cations.
•
Comply with local and national electrical codes
for cable sizes.
•
Connect 3-phase AC input power wiring to
terminals L1, L2, and L3.
•
Depending on the configuration of the
equipment, connect the input power to the
mains input terminals or the input disconnect.
•
Ground the cable in accordance with grounding
instructions provided in General Earth (Ground)
Requirements.
•
All frequency converters can be used with an
isolated input source as well as with ground
reference power lines. When supplied from an
isolated mains source (IT mains or floating delta)
or TT/TN-S mains with a grounded leg (grounded
delta), set 14-50 RFI Filter to OFF. When set to
OFF, the internal RFI filter capacitors between the
chassis and the intermediate circuit are isolated,
to avoid damage to the intermediate circuit and
to reduce earth capacity currents in accordance
with IEC 61800-3.
No.
91 92 93
L1 L2 L3
PE
20
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Function
RxD/TxD –P (red cable) for Profibus. See
dedicated literature (MCA 101) for details.
RxD/TxD –N (green cable) for Profibus.
0 V for Profibus.
+5 V for Profibus.
B-option. See dedicated literature for details.
Connection of LCP.
Mains voltage 3x380-480 V
Earth connection
MG04F302 - VLT
®
VLT Decentral Drive FCD 302 Operating Instructions
2.4.7 Motor and Mains Connection with
Service Switch

2.4.8 Brake Resistor

No. 81 (optional
function)
R-
•
•

2.4.9 Mechanical Brake

No. 122 (optional
function)
MBR+
®
is a registered Danfoss trademark
82 (optional
function)
R+
The connection cable to the brake resistor must
be screened/armoured. Connect the screen to the
metal cabinet of the frequency converter and to
the metal cabinet of the brake resistor with cable
clamps.
Dimension the cross-section of the brake cable to
match the brake torque.
123 (optional
function)
MBR- Mechanical brake
UDC = 0.45 x RMS mains
voltage
max. current = 0.8 A
Brake resistor
terminals