Access; Motor Connection - Danfoss VLT Midi Drive FC 280 Operating Instructions Manual

Electrical Installation

4.5 Access

•
Remove the cover plate with a screwdriver. See
Illustration 4.4.
4 4
Illustration 4.4 Control Wiring Access

4.6 Motor Connection

4.6.1 Motor Connection
WARNING
INDUCED VOLTAGE
Induced voltage from output motor cables that run
together can charge equipment capacitors, even when
the equipment is turned off and locked out. Failure to
run output motor cables separately or use screened
cables could result in death or serious injury.
•
Run output motor cables separately.
•
Use screened cables.
•
Comply with local and national electrical codes
for cable sizes. For maximum cable sizes, see
chapter 9.1 Electrical Data.
•
Follow motor manufacturer wiring requirements.
•
Motor wiring knockouts or access panels are
provided at the base of IP21 (NEMA1/12) units.
•
Do not wire a starting or pole-changing device
(for example, Dahlander motor or slip ring
induction motor) between the frequency
converter and the motor.
14
®
VLT Midi Drive FC 280
Procedure
1.
2.
3.
4.
5.
Illustration 4.5 Motor Connection
The mains, motor, and grounding connection for single-
phase and 3-phase frequency converters are shown in
Illustration 4.6 and Illustration 4.7 respectively. Actual
configurations vary with unit types and optional
equipment.
Danfoss A/S © 11/2015 All rights reserved.
Strip a section of the outer cable insulation.
Position the stripped cable under the cable clamp
to establish mechanical fixation and electrical
contact between the cable screen and ground.
Connect the ground cable to the nearest
grounding terminal in accordance with the
grounding instructions provided in
chapter 4.3 Grounding. See Illustration 4.5.
Connect the 3-phase motor wiring to terminals
96 (U), 97 (V), and 98 (W), as shown in
Illustration 4.5.
Tighten the terminals in accordance with the
information provided in chapter 9.7 Connection
Tightening Torques.
MG07A102