Danfoss VACON NXS Air-cooled, Руководство по эксплуатации

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-
A
B
B
C
FR4-9/FR10/
FR11 0460 6 & 0502 6 FR11 *)
e
3
0
b
g
0
8
0
.1
0
Illustration 14: Topology of Enclosure Sizes FR4 – FR11
A Single input
B Single output
C Double input
* The FR11 types 0460 6 and 0502 6 have single input
terminal.
6.1.7 Brake Resistor Cables
VACON
®
NXS/NXP AC drives have terminals for the DC supply and an optional external brake resistor. These terminals are identified
with B–, B+/R+, and R–. The DC bus connection is made to terminals B– and B+ and the brake resistor connection to R+ and R–.
Danfoss recommends shielded motor cable to be used for the brake resistor. Only two conductors of a normal three phase cable are
needed. The shield of the cable must be connected at each end. 360 ° grounding of the shield is recommended to minimize interfer-
ence. The third, unused connector must be grounded by connecting it to ground at one end.
See list of recommended cables in
12.3.1 List of Cable and Fuse Size Information .
C A U T I O N
SHOCK HAZARD FROM MULTI-CONDUCTOR CABLES
With a multi-conductor cable, the conductors that are not connected can cause an accidental contact with a conducting compo-
nent.
If a multi-conductor cable is used, cut off all conductors that are not connected.
The enclosure sizes FR8 and larger have the DC connection as optional.
If it is necessary to connect an external brake resistor, see VACON
®
Brake Resistor Manual. See also 8.7.8.2 Setting the Internal Brake
Resistor Connection .
6.2 EMC-compliant Installation
For cable selections in different EMC levels, see Table 10 .
For the EMC levels C1 and C2, it is necessary to have a 360º grounding of the shield on both ends of the motor cable.
Table 10: Recommendations for Cables
Cable
type
Category C1 and C2
(1)
Category C3
(2)
Category C4
(2)
No EMC protection
(2)
Motor ca-
ble A symmetrical power cable with a compact low-
impedance shield.
A cable for the specified mains voltage.
We recommend an NKCABLES /MCCMK, SAB/
ÖZCUY-J or equivalent cable. See
Illustration 15 .
A symmetrical power cable with a concentric protection wire.
A cable for the specified mains voltage.
We recommend an NKCABLES/MCMK cable. See
Illustration 15 .
Mains ca-
ble A power cable for a fixed installation.
A cable for the specified mains voltage.
A shielded cable is not necessary.
AQ275638903263en-000601 / DPD00910 40 | Danfoss A/S © 2022.12
Electrical Installation
VACON® NXS/NXP Air-cooled
Operating Guide