Danfoss DriveMotor FCP 106 BACnet Operating Instructions Manual page 9

Safety
WARNING
EQUIPMENT HAZARD
Contact with rotating shafts and electrical equipment
can result in death or serious injury.
•
Ensure that only trained and qualified
personnel perform installation, start up, and
maintenance.
•
Ensure that electrical work conforms to national
and local electrical codes.
•
Follow the procedures in this manual.
CAUTION
WINDMILLING
Unintended rotation of permanent magnet motors
causes risk of personal injury and equipment damage.
•
Ensure that permanent magnet motors are
blocked to prevent unintended rotation.
WARNING
LEAKAGE CURRENT HAZARD
Follow national and local codes regarding protective
earthing of equipment with a leakage current exceeding
3.5 mA. Frequency converter technology implies high
frequency switching at high power. This switching
generates a leakage current in the ground connection. A
fault current in the frequency converter at the output
power terminals can contain a DC component which can
charge the filter capacitors and cause a transient ground
current. The ground leakage current depends on various
system configurations including RFI filtering, screened
motor cables, and frequency converter power. EN/
IEC61800-5-1 (Power Drive System Product Standard)
requires special care because the leakage current
exceeds 3.5 mA. See EN60364-5-54 paragraph 543.7 for
further information.
•
Ensure correct grounding of the equipment by
a certified electrical installer.
•
Grounding must be reinforced in one of the
following ways:
- Ensure ground wire with cross-section
of at least 10 mm
- Ensure 2 separate ground wires, both
complying with the dimensioning
rules.
NOTICE
HIGH ALTITUDES
For installation at altitudes above 2000 m, contact
Danfoss regarding PELV.
®
VLT DriveMotor FCP 106 & FCM 106 BACnet Operating Instructions
SHOCK HAZARD
The frequency converter can cause a DC current in the
PE conductor.
Failure to follow the recommendation means the RCD
may not provide the intended protection.
GROUNDING HAZARD
For operator safety, it is important to ground the
frequency converter properly in accordance with national
and local electrical codes, as well as the instructions in
this manual. Ground currents are higher than 3.5 mA.
Failure to ground the frequency converter properly could
result in death or serious injury.
It is the responsibility of the user or certified electrical
installer, to ensure correct grounding of the equipment
in accordance with national and local electrical codes
and standards.
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MG03O102 - Danfoss A/S © 12/2013. All rights reserved.
CAUTION
•
When a residual current-operated protective
device (RCD) is used for protection against
electrical shock, only an RCD of Type B is
permitted on the supply side.
WARNING
•
Follow all local and national electrical codes to
ground electrical equipment properly.
•
Establish proper protective grounding for
equipment with current higher than 3.5 mA.
•
A dedicated ground wire is required for input
power, motor power, and control wiring.
•
Use the clamps provided with on the
equipment for proper ground connections.
•
Do not ground one frequency converter to
another in a "daisy chain" fashion.
•
Keep the ground wire connections as short as
possible.
•
Use of high-strand wire to reduce electrical
noise is recommended.
•
Follow motor manufacturer wiring
requirements.
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