16
WARNING
!
E
QUIPMENT
H
AZARD
!
R
OTATING SHAFTS AND ELECTRICAL EQUIPMENT CAN BE HAZARDOUS
.
I
T IS STRONGLY RECOMMENDED THAT ALL ELECTRICAL WORK
CONFORM TO ALL NATIONAL AND LOCAL REGULATIONS
.
I
NSTALLATION
,
START
-
UP AND MAINTENANCE SHOULD BE PERFORMED
ONLY BY QUALIFIED PERSONNEL
. F
AILURE 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.
WARNING
!
I
NDUCED
V
OLTAGE
!
R
UN OUTPUT MOTOR CABLES FROM MULTIPLE DRIVES SEPARATELY
.
I
NDUCED VOLTAGE FROM OUTPUT MOTOR CABLES RUN TOGETHER
CAN CHARGE EQUIPMENT CAPACITORS EVEN WITH THE EQUIPMENT
TURNED OFF AND LOCKED OUT
. F
AILURE TO RUN OUTPUT MOTOR
CABLES SEPARATELY COULD RESULT IN DEATH OR SERIOUS INJURY
.
NOTE
R
UN INPUT POWER
,
MOTOR WIRING AND CONTROL WIRING IN THREE
SEPARATE METALLIC CONDUITS OR RACEWAYS FOR HIGH FREQUENCY
NOISE ISOLATION
. F
AILURE 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.
At least three separate conduits must be connected
to the panel option (Figure 3-6).
•
Power into the option enclosure (and ground
back to the distribution panel)
•
Power from the option enclosure to the
motor (and earth ground)
•
Control wiring
Control wiring should always be isolated from the
high voltage power wiring.
Avoid getting metal chips into electronics.
Follow the connection procedures as illustrated in
the drawing drovided with the unit.
Figure 3-6. Power Connections
NOTE
M
AKE ALL POWER CONNECTIONS WITH MINIMUM
75
O
C
RATED
COPPER WIRING FOR INSTALLATIONS IN
N
ORTH
A
MERICA
.
Electrical Installation
