001 Stand Alone Low Voltage - Garney Construction

4-18 Practices
Conductor Termination
Terminate power, motor and control connections to the drive terminal
blocks. User manuals list minimum and maximum wire gauges, tightening
torque for terminals and recommended lug types if stud connections are
provided. Use a connector with 3 ground bushings when using a cable with
3 ground conductors. Bending radii minimums per the applicable electrical
code should be followed.
Power TB
Power terminals are normally fixed (non-pull apart) and can be cage
clamps, barrier strips or studs for ring type crimp lugs depending on the
drive style and rating. Cage clamp styles may require a non-standard
screwdriver. Crimp lugs will require a crimping tool. On smaller sizes, a
stripping gauge may be provided on the drive to assist in the amount of
insulation to remove. Normally the three phase input is not phase sensitive.
That is, the sequence of A,B,C phases has no effect on the operation of the
drive or the direction of motor rotation.
Control TB
Control terminal blocks are either pull apart or fixed (non pull apart).
Terminals will be either spring clamp type or barrier strip. A stripping
gauge may be provided on the drive to assist in the amount of insulation to
remove. Some control connections, such as analog input and output signals,
are polarity sensitive. Consult the applicable user manual for correct
connection.
Signal TB
If an encoder or tachometer feedback is used, a separate terminal block or
blocks may be provided. Consult the user manual for these phase sensitive
connections. Improper wiring could lead to incorrect drive operation.
Cables terminated here are typically shielded and the signals being carried
are generally more sensitive to noise. Carefully check the user manual for
recommendations on shield termination. Some shields can be terminated at
the terminal block and others will be terminated at the entry point.
Publication DRIVES-IN001K-EN-P