Danfoss VLT HVAC Drive FC 131 - Electrical Installation Fundamentals

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Enclosure Size
I2
I3
I4
I6
I7
I8
Depth [mm (in)]
C
225 (8.9)
237 (9.3)
290 (11.4)
260 (10.2)
310 (12.2)
335 (13.2)
Mounting hole [mm (in)]
d
11 (0.43)
12 (0.47)
12 (0.47)
19 (0.75)
19 (0.75)
19 (0.75)
e
5.5 (0.22)
6.5 (0.26)
6.5 (0.26)
9 (0.35)
9 (0.35)
9 (0.35)
f
9 (0.35)
9.5 (0.37)
9.5 (0.37)
9 (0.35)
9.8 (0.39)
9.8 (0.39)
Maximum weight kg (lb)
5.3 (11.7)
7.2 (15.9)
13.8 (30.42)
27 (59.5)
45 (99.2)
65 (143.3)
The dimensions are only for the physical units. When installing in an application, allow space above and below the units for cooling.
The amount of space for free air passage is listed in 3.1.1 Side-by-side Installation.
3.2 Electrical Installation
3.2.1 Electrical Installation in General
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper conductors
are required. 75 °C (167 °F) is recommended.
Table 6: Tightening Torques for Enclosure Sizes I2–I8
Power [kW (hp)]
Torque [Nm (in-lb)]
Enclosure
size
IP class
3x380–480 V
Mains
Motor
DC connec-
tion
Control ter-
minals
Ground
Relay
I2
IP54
0.75–4.0 (1.0–5.0)
0.8 (7.0)
0.8 (7.0)
0.8 (7.0)
0.5 (4.0)
0.8 (7.0)
0.5 (4.0)
I3
IP54
5.5–7.5 (7.5–10)
0.8 (7.0)
0.8 (7.0)
0.8 (7.0)
0.5 (4.0)
0.8 (7.0)
0.5 (4.0)
I4
IP54
11–18.5 (15–25)
1.2 (11)
1.2 (11)
0.8 (7.0)
0.5 (4.0)
0.8 (7.0)
0.5 (4.0)
I6
IP54
22–37 (30–50)
4.5 (40)
4.5 (40)
–
0.5 (4.0)
3 (27)
0.6 (5.0)
I7
IP54
45–55 (60–70)
10 (89)
10 (89)
–
0.5 (4.0)
3 (27)
0.6 (5.0)
I8
IP54
75–90 (100–125)
14 (124)/24
(212)
(1)
14 (124)/24
(212)
(1)
–
0.5 (4.0)
3 (27)
0.6 (5.0)
1
Cable dimensions ≤95 mm
2
.
3.2.2 IT Mains
C A U T I O N
IT MAINS
Installation on isolated mains source, that is, IT mains.
Ensure that the supply voltage does not exceed 440 V (3x380–480 V units) when connected to mains.
For IP54, 400 V, 0.75–18.5 kW (1.0–25 hp) units, open the RFI switch by removing the EMC screw inside the drive when at IT grid. The
EMC screw is shown in the the following illustration.
AQ367426199594en-000101 / 130R0988 | 11Danfoss A/S © 2021.06
Installation
VLT® HVAC Drive FC 131
Operating Guide