Access; Motor Connection - Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Electrical Installation

4.5 Access

•
Remove cover with a screw driver (See
Illustration 4.3) or by loosening attaching screws
(See Illustration 4.4).
4 4
Illustration 4.3 Access to Wiring for IP20 and IP21 Enclosures
Illustration 4.4 Access to Wiring for IP55 and IP66 Enclosures
See Table 4.2 before tightening covers.
Enclosure
A4/A5
B1/B2
C1/C2
No screws to tighten for A1/A2/A3/B3/B4/C3/C4.
Table 4.2 Tightening Torques for Covers [Nm]
14
®
VLT AutomationDrive FC 301/302 Operating Instructions
IP55 IP66
2 2
2.2 2.2
2.2 2.2
MG33AN02 - Rev. 2013-09-06

4.6 Motor Connection

WARNING
INDUCED VOLTAGE!
Induced voltage from output motor cables that run
together can charge equipment capacitors even with the
equipment turned off and locked out. Failure to run
output motor cables separately or use screened cables
could result in death or serious injury.
•
Comply with local and national electrical codes
for cable sizes. For maximum wire sizes see
8.1 Electrical Data.
•
Follow motor manufacturer wiring requirements.
•
Motor wiring knockouts or access panels are
provided at the base of IP21 (NEMA1/12) and
higher units.
•
Do not wire a starting or pole-changing device
(e.g. Dahlander motor or slip ring induction
motor) between the frequency converter and the
motor.
Procedure
1. Strip a section of the outer cable insulation.
2. Position the stripped wire under the cable clamp
to establish mechanical fixation and electrical
contact between cable screen and ground.
3. Connect ground wire to the nearest grounding
terminal in accordance with grounding
instructions provided in 4.3 Grounding, see
Illustration 4.5.
4. Connect the 3-phase motor wiring to terminals
96 (U), 97 (V), and 98 (W), see Illustration 4.5.
5. Tighten terminals in accordance with the
information provided in 8.8 Connection Tightening
Torques.