For your safety, comply with the following requirements
•
Electronic controls equipment is connected to
hazardous mains voltage. Extreme care should be
taken to protect against electrical hazards when
applying power to the unit.
•
Run motor cables from multiple frequency
converters 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.
•
Field wiring terminals are not intended to receive
a conductor one size larger.
Overload and Equipment Protection
•
An electronically activated function within the
frequency converter provides overload protection
for the motor. The overload calculates the level of
increase to activate timing for the trip (controller
output stop) function. The higher the current
draw, the quicker the trip response. The overload
provides Class 20 motor protection. See
Chapter8 Warnings and Alarms for details on the
trip function.
•
Because the motor wiring carries high frequency
current, it is important that wiring for mains,
motor power, and control are run separately. Use
metallic conduit or separated shielded wire. See
Illustration 2.3. Failure to isolate power, motor,
and control wiring could result in less than
optimum equipment performance.
•
All frequency converters must be provided with
short-circuit and over-current protection. Input
fusing is required to provide this protection, see
Illustration 2.4. If not factory supplied, fuses must
be provided by the installer as part of installation.
See maximum fuse ratings in 10.3.1 Protection.
Illustration 2.3 Example of Proper Electrical Installation Using
Conduit
Installation TR200 D-Frame Operating Instructions
12
BAS-SVX54B-EN
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