NOTICE
EMC INTERFERENCE
Use screened cables for motor and control wiring, and
separate cables for input power, motor wiring, and
control wiring. Failure to isolate power, motor, and
control cables can result in unintended behaviour or
reduced performance. Minimum 200 mm (7.9 in)
clearance between power, motor, and control cables is
required.
4.5 Access
•
Remove the cover with a screwdriver (see
) or by loosening attaching screws
(see
130B
T248.10
Illustration 4.3 Access to Wiring for IP20 and IP21 Enclosures
130B
T334.10
Illustration 4.4 Access to Wiring for IP55 and IP66 Enclosures
Tighten the cover screws using the tightening torques
specified in
.
Enclosure
IP55
IP66
A4/A5
2
2
B1/B2
2.2
2.2
C1/C2
2.2
2.2
No screws to tighten for A1/A2/A3/B3/B4/C3/C4.
Table 4.1 Tightening Torques for Covers [Nm]
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.
•
Run output motor cables separately, or
•
Use screened cables.
•
Comply with local and national electrical codes
for cable sizes. For maximum wire sizes, see
•
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
(for example, Dahlander motor or slip ring
asynchronous 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 the cable screen and ground.
3.
Connect the ground wire to the nearest
grounding terminal in accordance with the
grounding instructions provided in
, see
.
4.
Connect the 3-phase motor wiring to terminals
96 (U), 97 (V), and 98 (W), see
5.
Tighten the terminals in accordance with the
information provided in
.
Electrical Installation
VLT
®
AutomationDrive FC 301/302
16
Danfoss A/S © 07/2015 All rights reserved.
MG33AQ02
4
4
Summary of Contents for VLT AutomationDrive FC 301
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