Danfoss VLT AutomationDrive FC 301 Series Design Manual page 131

Electrical Installation
9.2.3 Tightening of the Cover after
Connections are Made
Enclosure
Type IP20 IP21
A1 * -
A2 * *
A3 * *
A4/A5 - -
B1 - *
B2 - *
B3 * -
B4 * -
C1 - *
C2 - *
C3 2 -
C4 2 -
* = No screws to tighten
- = Does not exist
Table 9.2 Tightening of the Cover (Nm)
9.3 AC line input connections
It is mandatory to ground the AC line input connection
properly using terminal 95 of the adjustable frequency
drive, see chapter 9.1.1 Grounding.
The ground connection cable cross-section must be at
2
least 10 mm or 2 x rated line power wires terminated
separately according to EN 50178.
Use non-shielded cable.
Figure 9.16 AC line input connections
NOTICE!
Using fuses and/or circuit breakers on the supply side is
mandatory to ensure compliance with IEC 60364 for CE
or NEC 2009 for UL, see chapter 9.3.1.4 UL Compliance.
MG33BF22
Design Guide
NOTICE!
Exceeding 480 V RMS
RISK OF DAMAGE TO THE ADJUSTABLE
FREQUENCY DRIVE WITH RFI FILTER INSTALLED
IP55 IP66
When installed on a delta-grounded grid or an IT grid
- -
(including ground fault condition), line input voltage in
- -
the range of 380–500 V (T4,T5) must not exceed 480 V
- -
RMS between line power and ground.
2 2
2.2 2.2
For some enclosures, the mounting is different if the
2.2 2.2
adjustable frequency drive is configured from factory with
- -
a line power switch. The various scenarios are illustrated in
- -
the following.
2.2 2.2
2.2 2.2
AC line input connection for enclosures A1, A2 and A3:
- - NOTICE!
- -
The power plug connector can be used on adjustable
frequency drives up to 7.5 kW.
Rev. 2014-04-04 All rights reserved.
1. Fit the two screws in the de-coupling plate, slide
it into place and tighten the screws.
2. Make sure the adjustable frequency drive is
properly grounded. Connect to ground
connection (terminal 95). Use screw from the
accessory bag.
3. Place plug connector 91 (L1), 92 (L2), 93 (L3) from
the accessory bag onto the terminals labeled
MAINS at the bottom of the adjustable frequency
drive.
4. Attach the line wires to the line power plug
connector.
5. Support the cable with the enclosed supporting
brackets.
9 9
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