3.4.2.2 Grounding IP21 Enclosures
The frequency converter can be grounded using conduit or
shielded cable. For grounding of the power connections,
use the dedicated grounding points as shown in
Illustration 3.4.
Illustration 3.4 Grounding for IP21 Enclosures.
3.4.3
Motor Connection
WARNING
INDUCED VOLTAGE!
Run output motor cables from multiple frequency
converters separately. Induced voltage from output
motor cables run together can charge equipment
capacitors even with the equipment turned off and
locked out. Failure to run output motor cables separately
could result in death or serious injury.
•
For maximum cable sizes, see chapter 5.1 Power-
dependent Specifications
•
Comply with local and national electrical codes
for cable sizes
•
Gland plates are provided at the base of IP21
units
•
Do not install power factor correction capacitors
between the frequency converter and the motor
•
Do not wire a starting or pole-changing device
between the frequency converter and the motor
•
Connect the 3-phase motor wiring to terminals
96 (U), 97 (V), and 98 (W)
•
Earth (ground) the cable in accordance with the
instructions provided
•
Torque terminals in accordance with the
information provided in chapter 5.3.4 Connection
Tightening Torques
•
Follow motor manufacturer wiring requirements
Installation Installation Guide
MG35Q202 Danfoss A/S © 01/2015 All rights reserved. 11
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