Electrical Installation - Danfoss VLT FC Series Operating Instructions Manual

Installation
3 3
Illustration 3.5 Cooling Airflow

3.3 Electrical Installation

WARNING
EQUIPMENT HAZARD!
ROTATING SHAFTS AND ELECTRICAL EQUIPMENT CAN BE
HAZARDOUS. IT IS STRONGLY RECOMMENDED THAT ALL
ELECTRICAL WORK CONFORM TO ALL NATIONAL AND
LOCAL REGULATIONS. INSTALLATION, START-UP AND
MAINTENANCE SHOULD BE PERFORMED ONLY BY
QUALIFIED PERSONNEL. FAILURE TO FOLLOW LOCAL
REGULATIONS COULD RESULT IN DEATH OR SERIOUS
INJURY.
•
Motor control equipment and electronic controls
are connected to hazardous line voltages.
Extreme care should be taken to protect against
electrical hazard.
•
Correct protective grounding of the equipment
must be established. Ground currents are higher
than 3 mA.
•
A dedicated ground wire is required.
•
Wear safety glasses whenever working on electric
control or rotating equipment.
NOTE
MAKE ALL POWER CONNECTIONS WITH MINIMUM 75 ° C
RATED COPPER WIRING FOR INSTALLATIONS IN NORTH
AMERICA.
14
Option Panel Operating Instructions
Ceiling
Air ow
4.0 in min.
4.0 in min.
Air ow
Floor
MG14I102 - VLT
Stop
Start
Line
Speed
power
Control
Illustration 3.6 Power Connections
WARNING
INDUCED VOLTAGE!
RUN OUTPUT MOTOR CABLES FROM MULTIPLE DRIVES
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.
RUN INPUT POWER, MOTOR WIRING AND CONTROL
WIRING IN THREE SEPARATE METALLIC CONDUITS OR
RACEWAYS FOR HIGH FREQUENCY NOISE ISOLATION.
FAILURE TO ISOLATE POWER, MOTOR AND CONTROL
WIRING COULD RESULT IN LESS THAN OPTIMUM DRIVE
AND ASSOCIATED EQUIPMENT PERFORMANCE.
•
Because the wiring from the option enclosure to
the motor carries high frequency electrical pulses,
it is important that no other wires are run in this
conduit. If the incoming power wiring is run in
the same conduit as the motor wiring, these
pulses can couple electrical noise back onto the
building power grid.
®
is a registered Danfoss trademark
Motor
Separate conduits