Main Circuit Terminal Power Supply And Motor Wiring - YASKAWA V1000 Series Installation & Start-Up Manual

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Main Circuit Terminal Power Supply and Motor Wiring

This section outlines the various steps, precautions, and checkpoints for wiring the
main circuit terminals and motor terminals.
NOTICE: Connect motor input terminals U/T1, V/T2 and W/T3 to drive output terminals U/T1,
V/T2 and W/T3. The phase order for the drive and motor should match. Failure to comply with
proper wiring practices may cause the motor to run in reverse if the phase order is backward.
NOTICE: Do not connect phase-advancing capacitors or LC/RC noise filters to the output
circuits. Improper application of noise filters could result in damage to the drive.
NOTICE: Do not connect the AC power line to the output motor terminals of the drive. Failure
to comply could result in death or serious injury by fire as a result of drive damage from line
voltage application to output terminals.
Cable Length Between Drive and Motor
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When determining the cable length between the drive and the motor, note that
voltage drop may cause reduced motor torque when the cable between the motor
and the drive is long.
Drive output current will increase as the leakage current from the cable increases.
An increase in leakage current may trigger an overcurrent situation and weaken the
accuracy of the current detection. Adjust the drive carrier frequency accordingly to
help minimize leakage current.
Refer to Table 3.5 to set the carrier frequency to an appropriate level.
Table 3.5 Cable Length Between Drive and Motor
Cable Length
Carrier Frequency
Note: When setting carrier frequency, calculate the cable length as the total distance of
wiring to all connected motors when running multiple motors from a single drive.
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
50 m or less
15 kHz or less
3.6 Main Circuit Wiring
100 m or less Greater than 100 m
10 kHz or less
3
5 kHz or less
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